Regulation No 75 of the Economic Commission for Europe of the United Nations ... (42011X0330(02))
    EU - Rechtsakte: 13 Industrial policy and internal market
    Only the original UN/ECE texts have legal effect under international public law. The status and date of entry into force of this Regulation should be checked in the latest version of the UN/ECE status document TRANS/WP.29/343, available at:
    http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29fdocstts.html

    Regulation No 75 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of pneumatic tyres for motor cycles and mopeds

    Incorporating all valid text up to:
    Supplement 13 to the Regulation in its original form — Date of entry into force: 24 October 2009
    CONTENTS
    REGULATION
    1.
    Scope
    2.
    Definitions
    3.
    Markings
    4.
    Application for approval
    5.
    Approval
    6.
    Requirements
    7.
    Modifications of the type of pneumatic tyre and extension of approval
    8.
    Conformity of production
    9.
    Penalties for non-conformity of production
    10.
    Production definitely discontinued
    11.
    Names and addresses of technical services responsible for conducting approval tests, and of administrative departments
    ANNEXES
    Annex 1 —
    Communication concerning the approval or extension or refusal or withdraw of approval or production definitely discontinued of a type of pneumatic tyre for motor cycles and mopeds pursuant to Regulation No 75
    Annex 2 —
    Arrangement of the approval mark
    Annex 3 —
    Arrangement of tyre markings — Example of the markings to be borne by types of tyres placed on the market after the entry into force of this Regulation
    Annex 4 —
    Load capacity index/maximum mass correspondence
    Annex 5 —
    Tyre size designation and dimensions
    Annex 6 —
    Method of measuring pneumatic tyres
    Annex 7 —
    Procedure for load/speed performance tests
    Annex 8 —
    Tyre load capacities at various speeds
    Annex 9 —
    Test procedure for the dynamic growth of tyres

    1.   SCOPE

    This Regulation applies to new pneumatic tyres for vehicles of category L
    1
    , L
    2
    , L
    3
    , L
    4
    and L
    5
    .
    However, it does not apply to tyre types designed exclusively for the ‘off-road’ use, which are marked ‘NHS’ (Not for Highway Service) and to tyre types designed exclusively for competitions.

    2.   DEFINITIONS

    For the purpose of this Regulation:
    2.1.
    ‘Type of pneumatic tyre’ means a category of pneumatic tyres which do not differ in such essential respects as:
    2.1.1.
    The manufacturer;
    2.1.2.
    Tyre size designation;
    2.1.3.
    Category of use (normal: for normal highway service; special: for special applications such as on-and off-the-road, snow, moped);
    2.1.4.
    Structure (diagonal or bias-ply, bias belted, radial);
    2.1.5.
    Speed category;
    2.1.6.
    Load capacity index;
    2.1.7.
    Tyre cross-section.
    2.2.
    ‘Structure of a pneumatic tyre’ means the technical characteristics of the tyre’s carcass. The following structures of a pneumatic tyre are distinguished in particular:
    2.2.1.
    ‘Diagonal’ or ‘bias ply’ describes a pneumatic tyre structure in which the ply cords extend to the beads and are laid at alternate angles substantially less than 90° to the centre line of the tread(1).
    2.2.2.
    ‘Bias belted’ describes a pneumatic tyre structure of diagonal (bias-ply) type in which the carcass is restricted by a belt comprising two or more layers of substantially inextensible cord material laid at alternate angles close to those of the carcass.
    2.2.3.
    ‘Radial’ describes a pneumatic tyre structure in which the ply cords extend to the beads and are laid substantially at 90° to the centreline of the tread, the carcass being stabilised by an essentially inextensible circumferential belt(1).
    2.2.4.
    ‘Reinforced’ describes a pneumatic tyre structure in which the carcass is more resistant than that of the corresponding normal tyre.
    2.3.
    ‘Bead’ means the part of a pneumatic tyre which is of such shape and structure as to fit the rim and hold the tyre on it(2).
    2.4.
    ‘Cord’ means the strands forming the fabric of the plies in the pneumatic tyre(2).
    2.5.
    ‘Ply’ means a layer of rubber-coated parallel cords(2).
    2.6.
    ‘Carcass’ means that part of a pneumatic tyre other than the tread and the rubber side walls which, when inflated, bears the load(2).
    2.7.
    ‘Tread’ means that part of a pneumatic tyre which comes into contact with the ground, protects the carcass against mechanical damage and contributes to ground adhesion(2).
    2.8.
    ‘Side wall’ means the part of a pneumatic tyre between the tread and the area designed to be covered by the rim flange(2).
    2.9.
    ‘Tread groove’ means the space between two adjacent ribs or blocks in the tread pattern(2).
    2.10.
    ‘Principal groove’ means the wide grooves situated in the central zone of the tread.
    2.11.
    ‘Section width (S)’ means the linear distance between the outsides of the side walls of an inflated pneumatic tyre, excluding elevations due to labelling (marking), decoration or protective bands or ribs(2).
    2.12.
    ‘Overall width’ means the linear distance between the outsides of the side walls of an inflated pneumatic tyre, including labelling (marking), decoration and protective bands or ribs(2); in the case of tyres where the tread is wider than the section width, the overall width corresponds to the tread width.
    2.13.
    ‘Section height (H)’ means a distance equal to half the difference between the outer diameter of the tyre and the nominal rim diameter(2).
    2.14.
    ‘Nominal aspect ratio (Ra)’ means the centuple of the number obtained by dividing the number expressing the section height (H) by the number expressing the nominal section width (S
    1
    ), both dimensions expressed in the same units.
    2.15.
    ‘Outer diameter (D)’ means the overall diameter of an inflated new pneumatic tyre(2).
    2.16.
    ‘Tyre-size designation’ is a designation showing:
    2.16.1.
    The nominal section width (S
    1
    ) must be expressed in mm except in the case of types of tyre for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation;
    2.16.2.
    The nominal aspect ratio, except in the case of certain types of tyre, for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation;
    2.16.3.
    A conventional number ‘d’ denoting the nominal diameter of the rim and corresponding to its diameter expressed either by code (numbers below 100) or in millimetres’ (numbers above 100).
    2.16.3.1.
    The values in millimetres of the symbol ‘d’ when indicated by a code are as follows:

    (in mm)

    Symbol ‘d’ indicated by one or two figures according to the nominal rim diameter

    Value of ‘d’

    4

    102

    5

    127

    6

    152

    7

    178

    8

    203

    9

    229

    10

    254

    11

    279

    12

    305

    13

    330

    14

    356

    15

    381

    16

    406

    17

    432

    18

    457

    19

    483

    20

    508

    21

    533

    22

    559

    23

    584

    2.17.
    ‘Nominal rim diameter (d)’ means the diameter of the rim on which a tyre is designed to be mounted(2).
    2.18.
    ‘Rim’ means the support for a tyre-and-tube assembly, or for a tubeless tyre, on which the tyre beads are seated(2).
    2.18.1.
    ‘Tyre to rim fitment configuration’ means the type of rim to which the tyre is designed to be fitted. In the case of non-standard rims this will be identified by a symbol applied to the tyre.
    2.19.
    ‘Theoretical rim’ means the rim whose width would be equal to X times the nominal section width of a tyre. The value of X shall be specified by the manufacturer of the tyre.
    2.20.
    ‘Measuring rim’ means the rim on which a tyre is required to be fitted for size measurements.
    2.21.
    ‘Test rim’ means the rim on which a tyre is required to be fitted for testing.
    2.22.
    ‘Chunking’ means the breaking away of pieces of rubber from the tread.
    2.23.
    ‘Cord separation’ means the parting of the cords from their rubber coating.
    2.24.
    ‘Ply separation’ means the parting of adjacent plies.
    2.25.
    ‘Tread separation’ means the pulling away of the tread from the carcass.
    2.26.
    ‘Load capacity index’ means a figure associated with the maximum load a tyre can carry at the speed corresponding to its speed symbol according to the operating conditions specified by the tyre manufacturer. A list of those indices and of the corresponding loads is given in Annex 4 to this Regulation.
    2.27.
    ‘Table of tyre load capacities at various speeds’ means the table in Annex 8 which shows, by reference to indices of load capacity and of capacity at nominal speed, load variations of a tyre if used at speeds other than that corresponding to the index of its nominal speed category.
    2.28.
    ‘Speed category’ means:
    2.28.1.
    The speeds, expressed by the speed category symbol as shown in the table in paragraph 2.28.2.
    2.28.2.
    The speed categories are as shown in the table below:

    (km/h)

    Speed category symbol

    Corresponding speed

    B

    50

    F

    80

    G

    90

    J

    100

    K

    110

    L

    120

    M

    130

    N

    140

    P

    150

    Q

    160

    R

    170

    S

    180

    T

    190

    U

    200

    H

    210

    V

    240

    W

    270

    2.28.3.
    Tyres suitable for maximum speeds in excess of 240 km/h are identified by means of letter codes ‘V’ or ‘Z’ (see paragraph 2.33.3) placed within the tyre size designation in front of the indications of the structure (see paragraph 3.1.3).
    2.29.
    ‘Snow tyre’ means a tyre whose tread pattern and whose structure are primarily designed to ensure in mud and fresh or melting snow a performance better than that of an ordinary (road-type) tyre. The tread pattern of a snow tyre generally consists of groove (rib) and/or solid-block elements more widely spaced than on an ordinary (road-type) tyre.
    2.30.
    ‘MST’ means ‘multiservice tyre’, suitable both on and off road.
    2.31.
    ‘Moped tyre’ means a tyre designed for the equipment of mopeds (categories L
    1
    and L
    2
    ).
    2.32.
    ‘Motor cycle tyre’ means a tyre designed primarily for the equipment of motor cycles (categories L
    3
    , L
    4
    and L
    5
    ). However, they may also equip mopeds (categories L
    1
    and L
    2
    ) and light trailers (category 01).
    2.33.
    ‘Maximum load rating’ means the maximum mass the tyre is rated to carry.
    2.33.1.
    For speeds lower or equal to 130 km/h, the maximum load rating must not exceed the percentage of the value associated with the relevant load capacity index of the tyre as indicated in the table ‘Load capacity variation with speed’ (see paragraph 2.27) with reference to the speed category symbol of the tyre and the speed capability of the vehicle to which the tyre is fitted.
    2.33.2.
    For speeds above 130 km/h but not exceeding 210 km/h, the maximum load rating must not exceed the value of the mass associated with the load capacity index of the tyre.
    2.33.3.
    For speeds above 210 km/h but not exceeding 270 km/h, the maximum load rating must not exceed the percentage of the mass, associated with the load capacity index of the tyre, indicated in the table below with reference to the speed category symbol of the tyre and the maximum design speed of the vehicle to which the tyre is to be fitted:

    Maximum speed km/h(5)

    Maximum Load Rating (%)

    Speed Category Symbol V

    Speed Category Symbol W(4)

    210

    100

    100

    220

    95

    100

    230

    90

    100

    240

    85

    100

    250

    (80)(3)

    95

    260

    (75)(3)

    85

    270

    (70)(3)

    75

    2.33.4.
    For speeds in excess of 270 km/h, the maximum load rating must not exceed the mass specified by the tyre manufacturer with reference to the speed capacity of the tyre.
    For intermediate speeds between 270 km/h and the maximum speed permitted by the tyre manufacturer, a linear interpolation of the maximum load rating applies.

    3.   MARKINGS

    3.1.
    Pneumatic tyres submitted for approval shall bear on at least one side wall the following markings:
    3.1.1.
    The trade name or mark;
    3.1.2.
    The tyre size designation as defined in paragraph 2.16 of this Regulation;
    3.1.3.
    An indication of the structure as follows:
    3.1.3.1.
    On diagonal (bias-ply) tyres, no marking, or the letter ‘D’,
    3.1.3.2.
    On bias-belted tyres, the letter ‘B’ placed in front of the rim-diameter marking, and in addition the words ‘BIAS-BELTED’ can be added,
    3.1.3.3.
    On radial-ply tyres, the letter ‘R’ placed in front of the rim-diameter marking, and, the word ‘RADIAL’ can be added.
    3.1.4.
    An indication of the tyre’s speed category by means of the symbol shown in paragraph 2.28.2 above;
    3.1.5.
    The load-capacity index as defined in paragraph 2.26 above;
    3.1.6.
    The word ‘TUBELESS’ if the tyre is designed for use without an inner tube;
    3.1.7.
    The word ‘REINFORCED’ or ‘REINF’ if the tyre is a reinforced tyre;
    3.1.8.
    The date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture. This marking, may be affixed to one side wall only.
    3.1.9.
    The inscription of ‘M + S’ or ‘M.S’ or ‘M & S’ in the case of a snow tyre. The inscription ‘DP’ (I.E. Dual Purpose) is accepted as a permitted alternative.
    3.1.10.
    The inscription MST in the case of multiservice tyres.
    3.1.11.
    The inscription ‘MOPED’ (or alternatively ‘CYCLOMOTEUR’ or ‘CICLOMOTORE’) in the case of moped tyres.
    3.1.12.
    An identification of the tyre to rim fitment configuration, when it differs from the standard configuration, immediately after the rim diameter marking referred to in paragraph 2.16.3 of this Regulation.
    In the case of tyres intended to be fitted to rims having a diameter equivalent to code 13 (330 mm) or above, this inscription shall be ‘M/C’. This requirement shall not apply to any tyre sizes listed in the tables of Annex 5 to this Regulation.
    3.1.13.
    Tyres suitable for speeds above 240 km/h must be marked with the appropriate letter code ‘V’ or ‘Z’, as applicable (see paragraph 2.33.3) in front of the indication of the structure (see paragraph 3.1.3).
    3.1.14.
    Tyres suitable for speeds above 240 km/h or (270 km/h respectively) must bear, within parenthesis, the marking of the load capacity index (see paragraph 3.1.5) applicable at a speed of 210 km/h (or 240 km/h respectively) and a reference speed category symbol (see paragraph 3.1.4) as follows:
    ‘V’ in case of tyres identified with the letter code ‘V’ within the size designation.
    ‘W’ in case of tyres identified with the letter code ‘Z’ within the size designation.
    3.2.
    Tyres shall provide adequate space for the approval mark, as shown in Annex 2 to this Regulation.
    3.3.
    Annex 3 to this Regulation gives an example of the tyre markings.
    3.4.
    The markings referred to in paragraph 3.1 and the approval mark prescribed in paragraph 5.4 of this Regulation shall be moulded on, to or into the tyres. They shall be clearly legible.

    4.   APPLICATION FOR APPROVAL

    4.1.
    The application for approval of a type of pneumatic tyre shall be submitted by the holder of the trade name or mark or by his duly accredited representative. It shall specify:
    4.1.1.
    The tyre-size designation as defined in paragraph 2.16 of this Regulation;
    4.1.2.
    The trade name or mark;
    4.1.3.
    The category of use (normal, special, snow or moped);
    4.1.4.
    Structure: diagonal (bias ply), bias belted or radial;
    4.1.5.
    The speed category;
    4.1.6.
    The load-capacity index of the tyre;
    4.1.7.
    Whether the tyre is to be used with or without an inner tube;
    4.1.8.
    Whether the tyre is ‘normal’ or ‘reinforced’;
    4.1.9.
    The ply-rating number of tyres for motor cycle derivatives (see table 5 of Annex 5 to this Regulation)(6);
    4.1.10.
    The overall dimensions: overall section width, and overall diameter;
    4.1.11.
    The rims on which the tyre can be mounted;
    4.1.12.
    The measuring rim and test rim;
    4.1.13.
    The test and measurement pressures;
    4.1.14.
    The factor X referred to in paragraph 2.19 above;
    4.1.15.
    For tyres identified by means of letter code ‘V’ within the size designation and suitable for speeds over 240 km/h or for tyres identified by means of letter code ‘Z’ within the size designation and suitable for speeds over 270 km/h, the maximum speed permitted by the tyre manufacturer and the load carrying capacity allowed for that maximum speed.
    4.2.
    The application for approval shall be accompanied (all in triplicate) by a sketch, or a representative photograph, which identify the tyre tread pattern and a sketch of the envelope of the inflated tyre mounted on the measuring rim showing the relevant dimensions (see paragraphs 6.1.1 and 6.1.2) of the type submitted for approval. It shall also be accompanied either by the test report issued by the approved test laboratory or by one or two samples of the tyre type, at the discretion of the competent authority. Drawings or photographs of the side wall and tread of the tyre shall be submitted once production has been established, no later than 1 year after the date of issue of the type approval.
    4.3.
    Where a tyre manufacturer submits application for type approval for a range of tyres, it is not considered necessary to carry out a load/speed test on every type of tyre in the range. Worst case selection may be made at the discretion of the approval authority.

    5.   APPROVAL

    5.1.
    If the pneumatic tyre submitted for approval in pursuance of this Regulation meets the requirements of paragraph 6 below, approval of that type of tyre shall be granted.
    5.2.
    An approval number shall be assigned to each type approved. Its first two digits (at present 00 for the Regulation in its original form) shall indicate the series of amendments incorporating the most recent major technical amendments made to the Regulation at the time of issue of the approval. The number so assigned shall not be assigned by the same Contracting Party to another type of pneumatic tyre.
    5.3.
    Notice of approval or of extension or of refusal or withdrawal of approval of a type of pneumatic tyre pursuant to this Regulation shall be communicated to the Parties to the Agreement applying this Regulation, by means of a form conforming to the model in Annex 1 to this Regulation.
    5.3.1.
    For tyres suitable for speeds above 240 km/h, the maximum speed permitted and the relevant load rating are specified under item 10 of Annex 1.
    5.4.
    There shall be affixed conspicuously to every pneumatic tyre conforming to a type of tyre approved under this Regulation, in the space referred to in paragraph 3.2 above, and in addition to the markings prescribed in paragraph 3.1 above, an international approval mark consisting of:
    5.4.1.
    A circle surrounding the letter ‘E’ followed by the distinguishing number of the country which has granted approval(7);
    5.4.2.
    The number of this Regulation, followed by the letter ‘R’, a dash and the type approval number.
    5.5.
    The approval mark shall be clearly legible and be indelible.
    5.6.
    Annex 2 to this Regulation gives an example of the arrangement of the approval mark.

    6.   REQUIREMENTS

    6.1.   Dimensions of tyres

    6.1.1.   Section width of a tyre

    6.1.1.1.
    The section width is obtained by means of the following formula:
    S = S
    1
    + K (A – A
    1
    )
    where:
    S
    is the ‘section width’ expressed in millimetres and measured on the measuring rim;
    S
    1
    is the ‘nominal section width’ (in millimetres) as shown on the side wall of the tyre in the designation of the tyre as prescribed;
    A
    is the width (expressed in millimetres) of the measuring rim, as shown by the manufacturer in the descriptive note;
    A
    1
    is the width (expressed in millimetres) of the theoretical rim;
    A
    1
    shall be taken to equal S
    1
    multiplied by the Factor X specified by the manufacturer;
    K
    shall be taken to equal 0,4.
    6.1.1.2.
    However, for types of tyres for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation, the section width shall be allowed to be that given opposite the tyre designation in the tables.

    6.1.2.   Outer diameter of a tyre

    6.1.2.1.
    The outer diameter of a tyre is obtained by means of the following formula:
    D = d + 2H
    where:
    D
    is the outer diameter expressed in millimetres;
    d
    is the conventional number defined in paragraph 2.16.3 above expressed in millimetres;
    H
    is the nominal section height in millimetres and is equal to:
    H = S
    1
     × 0,01 Ra
    where:
    S
    1
    is the nominal section width (in millimetres); and
    Ra
    is the nominal aspect ratio;
    all as shown on the side wall of the tyre in the tyre designation in conformity with the requirements of paragraph 3.4 above.
    6.1.2.2.
    However, for types of tyres for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation, the outer diameter shall be allowed to be that given opposite the tyre designation in the tables.

    6.1.3.   Method of measuring pneumatic tyres

    The dimensions of pneumatic tyres shall be measured by the procedure described in Annex 6 to this Regulation.

    6.1.4.   Tyre section-width specifications

    6.1.4.1.
    The overall width of a tyre may be less than the section width S determined pursuant to paragraph 6.1.1 above.
    6.1.4.2.
    It may exceed that value up to the value shown in Annex 5 or for sizes not included in Annex 5 by the following percentages:
    6.1.4.2.1.
    For normal and snow service:
    (a) rim diameter code 13 and above: + 10 per cent;
    (b) rim diameter codes up to 12 inclusive: + 8 per cent.
    6.1.4.2.2.
    For special service tyres which are suitable for limited road use and are marked MST: 25 per cent.

    6.1.5.   Tyre outer-diameter specifications

    6.1.5.1.
    The outer diameter of a tyre must not be outside the values Dmin and Dmax specified in Annex 5.
    6.1.5.2.
    For sizes not listed in Annex 5 the outer diameter of a tyre must not be outside the values Dmin and Dmax obtained from the following formulae:
     
    Dmin = d + (2H × a)
     
    Dmax = d + (2H × b)
    where:
    H and d are as defined in paragraph 6.1.2.1 and a and b are as specified in paragraphs 6.1.5.2.1 and 6.1.5.2.2 respectively.
    6.1.5.2.1.
    For normal highway service tyres and snow tyres a
    Rim diameter code 13 and above
    :
    0,97
    Rim diameter codes up to 12 inclusive
    :
    0,93
    For special service tyres
    :
    1,00;
    6.1.5.2.2.
    For normal highway service tyres b
    Rim diameter code 13 and above
    :
    1,07
    Rim diameter codes up to 12 inclusive
    :
    1,10
    For snow tyres and special service tyres
    :
    1,12.

    6.2.   Load/speed performance test

    6.2.1.
    The pneumatic tyre shall undergo a load/speed performance test carried out by the procedure described in Annex 7 to this Regulation.
    6.2.1.1.
    Where application is made for tyres identified by means of letter code ‘V’ within the size designation and suitable for speeds over 240 km/h or for tyres identified by means of letter code ‘Z’ within the size designation and suitable for speeds over 270 km/h (see paragraph 4.1.15), the above load/speed test is carried out on one tyre at the load and speed conditions marked within parenthesis on the tyre (see paragraph 3.1.14). Another load/speed test must be carried out on a second tyre of the same type at the load and speed conditions, if any, specified as maximum by the tyre manufacturer (see paragraph 4.1.15).
    6.2.2.
    A tyre which after undergoing the load/speed test does not exhibit any tread separation, ply separation, cord separation, chunking or broken cords shall be deemed to have passed the test.
    6.2.3.
    The outer diameter of the tyre, measured at least 6 hours after the load/speed performance test, must not differ by more than ± 3,5 per cent from the outer diameter as measured before the test.
    6.2.4.
    The overall width of the tyre measured at the end of the load/speed performance test must not exceed the value determined in paragraph 6.1.4.2.

    6.3.   Dynamic growth of tyres

    The tyres indicated in paragraph 1.1 of Annex 9 to this Regulation, which have passed the test for load/speed performance requirements in accordance with paragraph 6.2 above, shall be submitted to a dynamic growth test to be carried out in accordance with the procedure described in the said Annex.

    7.   MODIFICATIONS OF THE TYPE OF PNEUMATIC TYRE AND EXTENSION OF APPROVAL

    7.1.
    Every modification of the type of pneumatic tyre shall be notified to the administrative department which approved the type of pneumatic tyre. The department may then either:
    7.1.1.
    Consider that the modifications made are unlikely to have an appreciable adverse effect and that in any case, the pneumatic tyre still complies with the requirements; or
    7.1.2.
    Require a further test report from the technical service responsible for conducting the tests.
    7.1.3.
    A modification of the tread pattern of a tyre is deemed as not necessitating a repetition of the test specified in paragraph 6.2.
    7.1.4.
    Extensions of approval for tyres suitable for speeds over 240 km/h for tyres identified by means of letter code ‘V’ within the size designation (or 270 km/h for tyres identified by means of letter code ‘Z’ within the size designation), aiming at certification for different maximum speeds and/or loads, are permitted provided that a new test report, related to the new maximum speed and load rating, is supplied by the technical service responsible for carrying out tests.
    Such new load/speed capabilities must be specified in item 9 of Annex 1.
    7.2.
    Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 5.3 above to the Parties to the Agreement which apply this Regulation.
    7.3.
    The competent authority granting the extension of approval shall assign a series number to each communication form drawn up for such an extension.

    8.   CONFORMITY OF PRODUCTION

    The conformity of production procedures shall comply with those set out in the Agreement, Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev.2), with the following requirements:
    8.1.
    Tyres approved under this Regulation shall be so manufactured as to conform to the type approved, by meeting the requirements set forth in paragraph 6 above.
    8.2.
    The authority which has granted type approval may at any time verify the conformity control methods applied in each production facility. For each production facility the normal frequency of these verifications shall be once every 2 years.

    9.   PENALTIES FOR NON-CONFORMITY OF PRODUCTION

    9.1.
    The approval granted in respect of a type of pneumatic tyre pursuant to this Regulation may be withdrawn if the requirements laid down in paragraph 8.1 above are not complied with or if the tyres taken from the series have failed to pass the tests prescribed in that paragraph.
    9.2.
    If a Party to the Agreement applying this Regulation withdraws an approval it has previously granted, it shall forthwith so notify the other Contracting Parties applying this Regulation by means of a communication form conforming to the model in Annex 1 to this Regulation.

    10.   PRODUCTION DEFINITELY DISCONTINUED

    If the holder of an approval completely ceases to manufacture a type of pneumatic tyre approved in accordance with this Regulation, he shall so inform the authority which granted the approval. Upon receiving the relevant communication that authority shall inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of a communication form conforming to the model in Annex 1 to this Regulation.

    11.   NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR APPROVAL TESTS, AND OF ADMINISTRATIVE DEPARTMENTS

    11.1.
    The Parties to the Agreement which apply this Regulation shall communicate to the United Nations Secretariat the names and addresses of the technical services responsible for approval tests and of the administrative departments which grant approval and to which forms certifying approval, or extension, or refusal or withdrawal of approval, issued in other countries, are to be sent.
    11.2.
    The Parties to the Agreement which apply this Regulation may use laboratories of tyre manufacturers and may designate, as approved, test laboratories among those which are situated on their territory or on the territory of another Party to the Agreement, subject to a preliminary agreement to the procedure by the competent administrative department of the latter.
    11.3.
    Where a Party to the Agreement applies paragraph 11.2 above, it may, if it so desires, be represented at the tests by one or more persons of its choice.
    (1)  Applicable also to Regulation No 54.
    (2)  See the explanatory figure in the Appendix.
    (3)  Applicable only to tyres identified by means of letter code ‘V’ within the size designation and up to the maximum speed specified by the tyre manufacturer.
    (4)  Applicable also to tyres identified by means of letter code ‘Z’ within the size designation.
    (5)  For intermediate speeds linear interpolation of maximum load rating is allowed.
    (6)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54.
    (7)  1 for Germany, 2 for France, 3 for Italy, 4 for the Netherlands, 5 for Sweden, 6 for Belgium, 7 for Hungary, 8 for the Czech Republic, 9 for Spain, 10 for Serbia, 11 for the United Kingdom, 12 for Austria, 13 for Luxembourg, 14 for Switzerland, 15 (vacant), 16 for Norway, 17 for Finland, 18 for Denmark, 19 for Romania, 20 for Poland, 21 for Portugal, 22 for the Russian Federation, 23 for Greece, 24 for Ireland, 25 for Croatia, 26 for Slovenia, 27 for Slovakia, 28 for Belarus, 29 for Estonia, 30 (vacant), 31 for Bosnia and Herzegovina, 32 for Latvia, 33 (vacant), 34 for Bulgaria, 35 (vacant), 36 for Lithuania, 37 for Turkey, 38 (vacant), 39 for Azerbaijan, 40 for The former Yugoslav Republic of Macedonia, 41 (vacant), 42 for the European Union (Approvals are granted by its Member States using their respective ECE symbol), 43 for Japan, 44 (vacant), 45 for Australia, 46 for Ukraine, 47 for South Africa, 48 for New Zealand, 49 for Cyprus, 50 for Malta, 51 for the Republic of Korea, 52 for Malaysia, 53 for Thailand, 54 and 55 (vacant), 56 for Montenegro, 57 (vacant) and 58 for Tunisia. Subsequent numbers shall be assigned to other countries in the chronological order in which they ratify or accede to the Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for Reciprocal Recognition of Approvals Granted on the Basis of these Prescriptions, and the numbers thus assigned shall be communicated by the Secretary-General of the United Nations to the Contracting Parties to the Agreement.

    Appendix

    EXPLANATORY FIGURE

    (See paragraph 2 of the Regulation)

    [Bild bitte in Originalquelle ansehen]

    ANNEX 1

    COMMUNICATION

    (maximum format: A4 (210 x 297 mm))

    [Bild bitte in Originalquelle ansehen]

    ANNEX 2

    ARRANGEMENT OF THE APPROVAL MARK

    [Bild bitte in Originalquelle ansehen]

    ANNEX 3

    ARRANGEMENT OF TYRE MARKINGS

    Example of the markings to be borne by types of tyres placed on the market after the entry into force of this Regulation
    [Bild bitte in Originalquelle ansehen]
    These markings define a pneumatic tyre:
    — Having a nominal section width of 100,
    — Having a nominal aspect ratio of 80,
    — Having a bias-belted structure,
    — Having a nominal rim diameter of 457 mm, for which the code is l8,
    — Having a load capacity of 206 kg, corresponding to load index 53 in Annex 4 to this Regulation,
    — Of speed category S (maximum speed 180 km/h),
    — For fitting without an inner tube (‘tubeless’),
    — Snow tyre manufactured in the 25th week of the year 2003.
    The positioning and order of the markings constituting the tyre designation shall be the following:
    (a) The size designation, comprising the nominal section width, the nominal aspect ratio, the type-of-structure symbol (where applicable) and the nominal rim diameter shall be grouped as shown in the above example: 100/80Bl8;
    (b) The load index and the speed-category symbol shall be placed together near the size designation. They may either follow it or be placed above or below it;
    (c) The markings ‘TUBELESS’ and ‘REINFORCED’ or ‘REINF’ and ‘M + S’ and ‘MST’ and/or ‘MOPED’ (or CYCLOMOTEUR or CICLOMOTORE) may be at a distance from the size designation symbol;
    (d) In case of tyres suitable for speeds above 240 km/h the letter code ‘V’ or ‘Z’ as applicable, must be marked in front of the marking of structure (e.g. 140/60ZR18). The reference load capacity index and speed category symbol must be marked within parenthesis as applicable (see paragraph 3.1.14).

    ANNEX 4

    LOAD CAPACITY INDEX/MAXIMUM MASS CORRESPONDENCE
    A
    =
    Load capacity index
    B
    =
    Maximum corresponding mass (kg)

    A

    B

    16

    71

    17

    73

    18

    75

    19

    77,5

    20

    80

    21

    82,5

    22

    85

    23

    87,5

    24

    90

    25

    92,5

    26

    95

    27

    97

    28

    100

    29

    103

    30

    106

    31

    109

    32

    112

    33

    115

    34

    118

    35

    121

    36

    125

    37

    128

    38

    132

    39

    136

    40

    140

    41

    145

    42

    150

    43

    155

    44

    160

    45

    165

    46

    170

    47

    175

    48

    180

    49

    185

    50

    190

    51

    195

    52

    200

    53

    206

    54

    212

    55

    218

    56

    224

    57

    230

    58

    236

    59

    243

    60

    250

    61

    257

    62

    265

    63

    272

    64

    280

    65

    290

    66

    300

    67

    307

    68

    315

    69

    325

    70

    335

    71

    345

    72

    355

    73

    365

    74

    375

    75

    387

    76

    400

    77

    412

    78

    425

    79

    437

    80

    450

    81

    462

    82

    475

    83

    487

    84

    500

    85

    515

    86

    530

    87

    545

    88

    560

    89

    580

    90

    600

    ANNEX 5

    TYRE SIZE DESIGNATION AND DIMENSIONS
    Table 1
    Tyres for motor cycles
    Sizes with rim diameter code 12 and below

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)

     

     

    D.min

    D

    D.max

     

     

    2.50 – 8

     

    328

    338

    352

     

     

    2.50 – 9

     

    354

    364

    378

     

     

    2.50 – 10

    1.50

    379

    389

    403

    65

    70

    2.50 – 12

     

    430

    440

    451

     

     

    2.75 – 8

     

    338

    348

    363

     

     

    2.75 – 9

    1.75

    364

    374

    383

    71

    77

    2.75 – 10

     

    389

    399

    408

     

     

    2.75 – 12

     

    440

    450

    462

     

     

    3.00 – 4

     

    241

    251

    264

     

     

    3.00 – 5

     

    266

    276

    291

     

     

    3.00 – 6

     

    291

    301

    314

     

     

    3.00 – 7

     

    317

    327

    342

     

     

    3.00 – 8

    2.10

    352

    362

    378

    80

    86

    3.00 – 9

     

    378

    388

    401

     

     

    3.00 – 10

     

    403

    413

    422

     

     

    3.00 – 12

     

    454

    464

    473

     

     

    3.25 – 8

     

    362

    372

    386

     

     

    3.25 – 9

     

    388

    398

    412

     

     

    3.25 – 10

    2.50

    414

    424

    441

    88

    95

    3.25 – 12

     

    465

    475

    492

     

     

    3.50 – 4

     

    264

    274

    291

     

     

    3.50 – 5

     

    289

    299

    316

     

     

    3.50 – 6

     

    314

    324

    341

     

     

    3.50 – 7

    2.50

    340

    350

    367

    92

    99

    3.50 – 8

     

    376

    386

    397

     

     

    3.50 – 9

     

    402

    412

    430

     

     

    3.50 – 10

     

    427

    437

    448

     

     

    3.50 – 12

     

    478

    488

    506

     

     

    4.00 – 5

     

    314

    326

    346

     

     

    4.00 – 6

     

    339

    351

    368

     

     

    4.00 – 7

    2.50

    365

    377

    394

    105

    113

    4.00 – 8

     

    401

    415

    427

     

     

    4.00 – 10

     

    452

    466

    478

     

     

    4,00 – 12

     

    505

    517

    538

     

     

    4.50 – 6

     

    364

    376

    398

     

     

    4.50 – 7

     

    390

    402

    424

     

     

    4.50 – 8

     

    430

    442

    464

     

     

    4.50 – 9

    3.00

    456

    468

    490

    120

    130

    4.50 – 10

     

    481

    493

    515

     

     

    4.50 – 12

     

    532

    544

    568

     

     

    5.00 – 8

     

    453

    465

    481

     

     

    5.00 – 10

    3.50

    504

    516

    532

    134

    145

    5.00 – 12

     

    555

    567

    583

     

     

    6.00 – 6

    4.00

    424

    436

    464

     

     

    6.00 – 7

     

    450

    462

    490

    154

    166

    6.00 – 8

     

    494

    506

    534

     

     

    6,00 – 9

     

    520

    532

    562

     

     

    Table 1a
    Tyres for mopeds
    Sizes with rim diameter code 12 and below

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)(1)

     

     

    D.min

    D

    D.max(1)

     

     

    2 – 12

    1.35

    413

    417

    426

    55

    59

    2-1/2 – 12

    1.50

    425

    431

    441

    62

    67

    2-1/2 – 8

    1.75

    339

    345

    356

    70

    76

    2-1/2 – 9

    1.75

    365

    371

    382

    70

    76

    2-3/4 – 9

    1.75

    375

    381

    393

    73

    79

    3 – 10

    2.10

    412

    418

    431

    84

    91

    3 – 12

    2.10

    463

    469

    482

    84

    91

    Table 2
    Tyres for motor cycles
    Normal section size

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)

     

     

    D.min

    D

    D.max(2)

    D.max(3)

     

    (2)

    (3)

    1 3/4 – 19

    1.20

    582

    589

    597

    605

    50

    54

    58

    2 – 14

     

    461

    468

    477

    484

     

     

     

    2 – 15

     

    486

    493

    501

    509

     

     

     

    2 – 16

     

    511

    518

    526

    534

     

     

     

    2 – 17

     

    537

    544

    552

    560

     

     

     

    2 – 18

    1.35

    562

    569

    577

    585

    55

    58

    63

    2 – 19

     

    588

    595

    603

    611

     

     

     

    2 – 20

     

    613

    620

    628

    636

     

     

     

    2 – 21

     

    638

    645

    653

    661

     

     

     

    2 – 22

     

    663

    670

    680

    686

     

     

     

    2 1/4 – 14

     

    474

    482

    492

    500

     

     

     

    2 1/4 – 15

     

    499

    507

    517

    525

     

     

     

    2 1/4 – 16

     

    524

    532

    540

    550

     

     

     

    2 1/4 – 17

     

    550

    558

    566

    576

     

     

     

    2 1/4 – 18

    1.50

    575

    583

    591

    601

    62

    66

    71

    2 1/4 – 19

     

    601

    609

    617

    627

     

     

     

    2 1/4 – 20

     

    626

    634

    642

    652

     

     

     

    2 1/4 – 21

     

    651

    659

    667

    677

     

     

     

    2 1/4 – 22

     

    677

    685

    695

    703

     

     

     

    2 1/2 – 14

     

    489

    498

    508

    520

     

     

     

    2 1/2 – 15

     

    514

    523

    533

    545

     

     

     

    2 1/2 – 16

     

    539

    548

    558

    570

     

     

     

    2 1/2 – 17

     

    565

    574

    584

    596

     

     

     

    2 1/2 – 18

    1.60

    590

    599

    609

    621

    68

    72

    78

    2 1/2 – 19

     

    616

    625

    635

    647

     

     

     

    2 1/2 – 20

     

    641

    650

    660

    672

     

     

     

    2 1/2 – 21

     

    666

    675

    685

    697

     

     

     

    2 1/2 – 22

     

    692

    701

    711

    723

     

     

     

    2 3/4 – 14

     

    499

    508

    518

    530

     

     

     

    2 3/4 – 15

     

    524

    533

    545

    555

     

     

     

    2 3/4 – 16

     

    549

    558

    568

    580

     

     

     

    2 3/4 – 17

     

    575

    584

    594

    606

     

     

     

    2 3/4 – 18

    1.85

    600

    609

    621

    631

    75

    80

    86

    2 3/4 – 19

     

    626

    635

    645

    657

     

     

     

    2 3/4 – 20

     

    651

    660

    670

    682

     

     

     

    2 3/4 – 21

     

    676

    685

    695

    707

     

     

     

    2 3/4 – 22

     

    702

    711

    721

    733

     

     

     

    3 – 16

     

    560

    570

    582

    594

     

     

     

    3 – 17

     

    586

    596

    608

    620

     

     

     

    3 – 18

    1.85

    611

    621

    633

    645

    81

    86

    93

    3 – 19

     

    637

    647

    659

    671

     

     

     

    3 1/4 – 16

     

    575

    586

    598

    614

     

     

     

    3 1/4 – 17

     

    601

    612

    624

    640

     

     

     

    3 1/4 – 18

    2.15

    626

    637

    651

    665

    89

    94

    102

    3 1/4 – 19

     

    652

    663

    675

    691

     

     

     

    Table 3
    Tyres for motor cycles
    Normal section sizes

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)

     

     

    D.min

    D

    D.max(4)

    D.max(5)

     

    (6)

    (7)

    (8)

    2.00 – 14

     

    460

    466

    478

     

     

     

     

     

    2.00 – 15

     

    485

    491

    503

     

     

     

     

     

    2.00 – 16

     

    510

    516

    528

     

     

     

     

     

    2.00 – 17

    1.20

    536

    542

    554

     

    52

    57

    60

    65

    2.00 – 18

     

    561

    567

    579

     

     

     

     

     

    2.00 – 19

     

    587

    593

    605

     

     

     

     

     

    2.25 – 14

     

    474

    480

    492

    496

     

     

     

     

    2.25 – 15

     

    499

    505

    517

    521

     

     

     

     

    2.25 – 16

     

    524

    530

    542

    546

     

     

     

     

    2.25 – 17

    1.60

    550

    556

    568

    572

    61

    67

    70

    75

    2.25 – 18

     

    575

    581

    593

    597

     

     

     

     

    2.25 – 19

     

    601

    607

    619

    623

     

     

     

     

    2.50 – 14

     

    486

    492

    506

    508

     

     

     

     

    2.50 – 15

     

    511

    517

    531

    533

     

     

     

     

    2.50 – 16

     

    536

    542

    556

    558

     

     

     

     

    2.50 – 17

    1.60

    562

    568

    582

    584

    65

    72

    75

    79

    2.50 – 18

     

    587

    593

    607

    609

     

     

     

     

    2.50 – 19

     

    613

    619

    633

    635

     

     

     

     

    2.50 – 21

     

    663

    669

    683

    685

     

     

     

     

    2.75 – 14

     

    505

    512

    524

    530

     

     

     

     

    2.75 – 15

     

    530

    537

    549

    555

     

     

     

     

    2.75 – 16

     

    555

    562

    574

    580

     

     

     

     

    2.75 – 17

    1.85

    581

    588

    600

    606

    75

    83

    86

    91

    2.75 – 18

     

    606

    613

    625

    631

     

     

     

     

    2.75 – 19

     

    632

    639

    651

    657

     

     

     

     

    2.75 – 21

     

    682

    689

    701

    707

     

     

     

     

    3.00 – 14

     

    519

    526

    540

    546

     

     

     

     

    3.00 – 15

     

    546

    551

    565

    571

     

     

     

     

    3.00 – 16

     

    569

    576

    590

    596

     

     

     

     

    3.00 – 17

    1.85

    595

    602

    616

    622

    80

    88

    92

    97

    3.00 – 18

     

    618

    627

    641

    647

     

     

     

     

    3.00 – 19

     

    644

    653

    667

    673

     

     

     

     

    3.00 – 21

     

    694

    703

    717

    723

     

     

     

     

    3.00 – 23

     

    747

    754

    768

    774

     

     

     

     

    3.25 – 14

     

    531

    538

    552

    560

     

     

     

     

    3.25 – 15

     

    556

    563

    577

    585

     

     

     

     

    3.25 – 16

     

    581

    588

    602

    610

     

     

     

     

    3.25 – 17

    2.15

    607

    614

    628

    636

    89

    98

    102

    108

    3.25 – 18

     

    630

    639

    653

    661

     

     

     

     

    3.25 – 19

     

    656

    665

    679

    687

     

     

     

     

    3.25 – 21

     

    708

    715

    729

    737

     

     

     

     

    3.50 – 14

     

    539

    548

    564

    572

     

     

     

     

    3.50 – 15

     

    564

    573

    589

    597

     

     

     

     

    3.50 – 16

     

    591

    598

    614

    622

     

     

     

     

    3.50 – 17

    2.15

    617

    624

    640

    648

    93

    102

    107

    113

    3.50 – 18

     

    640

    649

    665

    673

     

     

     

     

    3.50 – 19

     

    666

    675

    691

    699

     

     

     

     

    3.50 – 21

     

    716

    725

    741

    749

     

     

     

     

    3.75 – 16

     

    601

    610

    626

    634

     

     

     

     

    3.75 – 17

     

    627

    636

    652

    660

     

     

     

     

    3.75 – 18

    2.15

    652

    661

    677

    685

    99

    109

    114

    121

    3.75 – 19

     

    678

    687

    703

    711

     

     

     

     

    4.00 – 16

     

    611

    620

    638

    646

     

     

     

     

    4.00 – 17

     

    637

    646

    664

    672

     

     

     

     

    4.00 – 18

    2.50

    662

    671

    689

    697

    108

    119

    124

    130

    4.00 – 19

     

    688

    697

    715

    723

     

     

     

     

    4.25 – 16

     

    623

    632

    650

    660

     

     

     

     

    4.25 – 17

     

    649

    658

    676

    686

     

     

     

     

    4.25 – 18

    2.50

    674

    683

    701

    711

    112

    123

    129

    137

    4.25 – 19

     

    700

    709

    727

    737

     

     

     

     

    4.50 – 16

     

    631

    640

    658

    668

     

     

     

     

    4.50 – 17

     

    657

    666

    684

    694

     

     

     

     

    4.50 – 18

    2.75

    684

    691

    709

    719

    123

    135

    141

    142

    4.50 – 19

     

    707

    717

    734

    745

     

     

     

     

    5.00 – 16

     

    657

    666

    686

    698

     

     

     

     

    5.00 – 17

     

    683

    692

    710

    724

     

     

     

     

    5.00 – 18

    3.00

    708

    717

    735

    749

    129

    142

    148

    157

    5.00 – 19

     

    734

    743

    761

    775

     

     

     

     

    Table 4
    Tyres for motor cycles
    Low section sizes

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)

     

     

    D.min

    D

    D.max(9)

    D.max(10)

     

    (11)

    (12)

    (13)

    3.60 – 18

     

    605

    615

    628

    633

     

     

     

     

     

    2.15

     

     

     

     

    93

    102

    108

    113

    3.60 – 19

     

    631

    641

    653

    658

     

     

     

     

    4.10 – 18

     

    629

    641

    654

    663

     

     

     

     

     

    2.50

     

     

     

     

    108

    119

    124

    130

    4.10 – 19

     

    655

    667

    679

    688

     

     

     

     

    5.10 – 16

     

    615

    625

    643

    651

     

     

     

     

    5.10 – 17

    3.00

    641

    651

    670

    677

    129

    142

    150

    157

    5.10 – 18

     

    666

    676

    694

    702

     

     

     

     

    4.25/85 – 18

    2.50

    649

    659

    673

    683

    112

    123

    129

    137

    4.60 – 16

     

    594

    604

    619

    628

     

     

     

     

    4.60 – 17

    2.75

    619

    630

    642

    654

    117

    129

    136

    142

    4.60 – 18

     

    644

    654

    670

    678

     

     

     

     

    6.10 – 16

    4.00

    646

    658

    678

    688

    168

    185

    195

    203

    Table 5
    Tyres for motor cycle derivatives

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)

     

     

    D.min

    D

    D.max

     

     

    3.00 – 8C

     

    359

    369

    379

     

     

    3.00 – 10C

    2.10

    410

    420

    430

    80

    86

    3.00 – 12C

     

    459

    471

    479

     

     

    3.50 – 8C

     

    376

    386

    401

     

     

    3.50 – 10C

    2.50

    427

    437

    452

    92

    99

    3.50 – 12C

     

    478

    488

    503

     

     

    4.00 – 8C

     

    405

    415

    427

     

     

    4.00 – 10C

    3.00

    456

    466

    478

    108

    117

    4.00 – 12C

     

    507

    517

    529

     

     

    4.50 – 8C

     

    429

    439

    453

     

     

    4.50 – 10C

    3.50

    480

    490

    504

    125

    135

    4.50 – 12C

     

    531

    541

    555

     

     

    5.00 – 8C

     

    455

    465

    481

     

     

    5.00 – 10C

    3.50

    506

    516

    532

    134

    145

    5.00 – 12C

     

    555

    567

    581

     

     

    Table 6
    Motor cycle tyres
    Low pressure sizes

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)

     

     

    D.min

    D

    D.max

     

     

    5.4 – 10

     

    474

    481

    487

     

     

    5.4 – 12

     

    525

    532

    547

     

     

    5.4 – 14

    4.00

    575

    582

    598

    135

    143

    5.4 – 16

     

    626

    633

    649

     

     

    6.7 – 10

     

    532

    541

    561

     

     

    6.7 – 12

    5.00

    583

    592

    612

    170

    180

    6.7 – 14

     

    633

    642

    662

     

     

    Table 7
    Motor cycle tyres
    Sizes and dimensions of American tyres

    Tyre size

    Measuring rim width

    (Code)

    Overall diameter

    (mm)

    Section width

    (mm)

    Maximum overall width

    (mm)

     

     

    D.min

    D

    D.max

     

     

    MH90 – 21

    1.85

    682

    686

    700

    80

    89

    MJ90 – 18

    2.15

    620

    625

    640

     

     

     

     

     

     

     

    89

    99

    MJ90 – 19

    2.15

    645

    650

    665

     

     

    ML90 – 18

    2.15

    629

    634

    650

     

     

     

     

     

     

     

    93

    103

    ML90 – 19

    2.15

    654

    659

    675

     

     

    MM90 – 19

    2.15

    663

    669

    685

    95

    106

    MN90 – 18

    2.15

    656

    662

    681

    104

    116

    MP90 – 18

    2.15

    667

    673

    692

    108

    120

    MR90 – 18

    2.15

    680

    687

    708

    114

    127

    MS90 – 17

    2.50

    660

    667

    688

    121

    134

    MT90 – 16

    3.00

    642

    650

    672

     

     

     

     

     

     

     

    130

    144

    MT90 – 17

    3.00

    668

    675

    697

     

     

    MU90 – 15M/C

    3.50

    634

    642

    665

     

     

     

     

     

     

     

    142

    158

    MU90 – 16

    3.50

    659

    667

    690

     

     

    MV90 – 15M/C

    3.50

    643

    651

    675

    150

    172

    MP85 – 18

    2.15

    654

    660

    679

    108

    120

    MR85 – 16

    2.15

    617

    623

    643

    114

    127

    MS85 – 18

    2.50

    675

    682

    702

    121

    134

    MT85 – 18

    3.00

    681

    688

    709

    130

    144

    MU85 – 16M/C

    3.50

    650

    658

    681

    142

    158

    MV85 – 15M/C

    3.50

    627

    635

    658

    150

    172

    (1)  Normal road (highway) service.
    (2)  Normal highway service.
    (3)  Special service and snow tyres.
    (4)  Tyres for normal highway service.
    (5)  Tyres for special service and snow tyres.
    (6)  Tyres for normal highway service up to speed category P inclusive.
    (7)  Tyres for normal highway service above speed category P and snow tyres.
    (8)  Tyres for special service.
    (9)  Tyres for normal highway service.
    (10)  Tyres for special service and snow tyres.
    (11)  Tyres for normal highway service up to speed category P inclusive.
    (12)  Tyres for normal highway service above speed category P and snow tyres.
    (13)  Tyres for special service.
    (14)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54, Annex 5, Part I, Table A.

    ANNEX 6

    METHOD OF MEASURING PNEUMATIC TYRES

    1.
    The tyre is mounted on the measuring rim specified by the manufacturer pursuant to paragraph 4.1.12 of this Regulation and is inflated to a pressure specified by the manufacturer.
    As an alternative, inflation pressures could be specified as follows:

    Tyre version

    Speed category

    Pressure

     

     

    bar

    kPa

    Standard

    F, G, J, K, L, M, N, P, Q, R, S

    2,25

    225

    T, U, H, V, W

    2,80

    280

    Reinforced

    F to P

     

     

     

    Q, R, S, T, U, H, V

    3,30

    330

    Motorcycle Derivatives(1)

    4PR

    F to M

    3,50

    350

     

    6PR

    4,00

    400

     

    8PR

    4,50

    450

    Moped

    Standard

    B

    2,25

    225

    Reinforced

    B

    2,80

    280

    For other tyre versions, inflate to the pressure specified by the tyre manufacturer.
    2.
    The tyre fitted on its rim is conditioned to the ambient temperature of the laboratory for at least 24 hours.
    3.
    The pressure is readjusted to the value specified in paragraph 1 above.
    4.
    The overall width is measured by calliper at six equally-spaced points, account being taken of the thickness of the protective ribs or bands. The highest measurement so obtained is taken as the overall width.
    5.
    The outer diameter is determined by measuring the maximum circumference and dividing the figure so obtained by π (3,1416).
    (1)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54.

    ANNEX 7

    PROCEDURE FOR LOAD/SPEED PERFORMANCE TESTS

    1.   PREPARATION OF TYRE

    1.1.
    Mount a new tyre on the test rim specified by the manufacturer pursuant to paragraph 4.1.12 of this Regulation.
    1.2.
    Inflate the tyre to the appropriate pressure given in the following table:

    Testing inflation pressure (bars)

    Tyre size

    Speed Category

    Inflation pressure

    bar

    kPa

    Standard

    F, G, J, K

    2,50

    250

    L, M, N, P

    2,50

    250

    Q, R, S

    3,00

    300

    T, U, H, V

    3,50

    350

    Reinforced

    F, G, J, K, L, M, N, P

    3,30

    330

    Q, R, S, T, U, H, V

    3,90

    390

    Motorcycle Derivatives(1)

    4PR

    F, G, J, K, L, M

    3,70

    370

    6PR

    4,50

    450

    8PR

    5,20

    520

    Moped

    Standard

    B

    2,50

    250

    Reinforced

    B

    3,00

    300

    For speeds above 240 km/h, the test pressure is 3,20 bar (320 kPa).
    For other types of tyre, inflate to the pressure specified by the manufacturer.
    1.3.
    The manufacturer may request, giving reasons, the use of test-inflation pressures differing from those given under paragraph 1.2 above. In such a case the tyre shall be inflated to that pressure.
    1.4.
    Condition the tyre-and-wheel assembly at test room temperature for not less than 3 hours.
    1.5.
    Readjust the tyre pressure to that specified in paragraph 1.2 or 1.3 above.

    2.   TEST PROCEDURE

    2.1.
    Mount the tyre-and-wheel assembly on the test axle and press it against the outer face of a smooth test drum of 1,70 m ± 1 per cent or 2,0 m ± 1 per cent in diameter.
    2.2.
    Apply to the test axle a load equal to 65 per cent of:
    2.2.1.
    The maximum load rating equated to the Load Capacity Index for tyres with speed symbols up to H inclusive;
    2.2.2.
    The maximum load rating associated with a maximum speed of 240 km/h for tyres with speed symbol ‘V’ (see paragraph 2.33.3 of this Regulation);
    2.2.3.
    The maximum load rating associated with a maximum speed of 270 km/h for tyres with speed symbol ‘W’ (see paragraph 2.33.3);
    2.2.4.
    The maximum load rating associated with the maximum speed specified by the tyre manufacturer for tyres suitable for speeds above 240 km/h (or 270 km/h as applicable) (see paragraph 6.2.1.1).
    2.2.5.
    In case of moped tyres (speed category symbol B) the test load is 65 per cent on a 1,7 m diameter test drum and 67 per cent on a 2,0 m diameter test drum.
    2.3.
    The tyre pressure must not be corrected throughout the test and the test load must be kept constant.
    2.4.
    During the test the temperature in the test room must be maintained between 20 °C and 30 °C or at a higher temperature if the manufacturer so agrees.
    2.5.
    The test shall be run without interruption, in accordance with the following:
    2.5.1.
    Twenty minutes is allowed to build up from zero to the initial test speed;
    2.5.2.
    Initial tests speed: 30 km/h less than the speed corresponding to the speed category symbol marked on the tyre (see paragraph 2.28.2 of this Regulation) if a 2,0 m diameter test drum is used, or 40 km/h less if a 1,7 m diameter test drum is used;
    2.5.2.1.
    The maximum speed to be considered for the second test in case of tyres suitable for speeds above 240 km/h for tyres identified by means of letter code ‘V’ within the size designation (or 270 km/h for tyres identified by means of letter code ‘Z’ within the size designation) is the maximum speed specified by the tyre manufacturer (see paragraph 4.1.15).
    2.5.3.
    Speed steps of 10 km/h;
    2.5.4.
    Test duration at each speed step: 10 minutes;
    2.5.5.
    Total duration of the test: 1 hour;
    2.5.6.
    Maximum test speed: the maximum rated speed of the type of tyre if the test is performed with a 2,0 m diameter test drum; maximum rated speed for the type of tyre less 10 km/h if the test is performed with a 1,7 m diameter test drum.
    2.5.7.
    In case of moped tyres (speed category symbol B), the test speed is 50 km/h, the build-up from 0 to 50 km/h is 10 minutes, the duration at the speed step is 30 minutes with a total duration of the test of 40 minutes.
    2.6.
    However, in case a second test is performed to assess the top performances of tyres suitable for speed above 240 km/h, the procedure shall be the following:
    2.6.1.
    Twenty minutes to build up from zero to the initial test speed;
    2.6.2.
    Twenty minutes at the initial test speed;
    2.6.3.
    Ten minutes to build up to the maximum test speed;
    2.6.4.
    Five minutes at the maximum test speed.

    3.   EQUIVALENT TESTS

    If a test other than that described above is used, its equivalence must be proved.
    (1)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54.

    ANNEX 8

    TYRE LOAD CAPACITIES AT VARIOUS SPEEDS

    [Bild bitte in Originalquelle ansehen]

    ANNEX 9

    TEST PROCEDURE FOR THE DYNAMIC GROWTH OF TYRES

    1.   SCOPE AND RANGE OF APPLICATION

    1.1.   This testing procedure is applicable for tyres mentioned in paragraphs 3.4.1 and 4.1 below.
    1.2.   It serves to determine the maximum tyre growth under the influence of centrifugal forces at the admissible maximum speed.

    2.   DESCRIPTION OF TEST PROCEDURE

    2.1.   The test axle and the rim must be controlled in order to assure a radial run-out less than ± 0,5 mm and a lateral run-out less than ± 0,5 mm, when measured at the bead seat of the wheel.

    2.2.   Contour outline device

    Any device (projecting grid, camera, spot lights and others) which permits the external contour of the tyre cross-section to be outlined distinctly, or to establish an enveloping curve, normal to the tyre equator, at the point of the maximum deformation of the tread.
    The device should reduce to a minimum any distortion and assure a constant (known) ratio (K) between the plotted contour and the actual tyre dimensions.
    The device shall permit reference of the tyre contour to the wheel axis.
    2.3.   The deviation of the tyre tread peripheral speed, measured with a stroboscope, from the corresponding maximum speed of the tyre may not exceed ± 2 per cent.
    2.4.   If another test procedure is applied, it must be proved to be equivalent to the present procedure.

    3.   EXECUTION OF TEST

    3.1.   During the test, the temperature in the test room must be maintained at between 20 °C and 30 °C or at a higher temperature if the tyre manufacturer agrees.
    3.2.   The tyres to be tested shall have passed the load speed performance test according to Annex 7 to the Regulation, without showing any defect.
    3.3.   The tyre to be tested shall be fitted to a wheel having a rim conforming to the applicable standard.
    3.4.   The tyre inflation pressure (testing pressure) shall be adjusted to the values indicated in paragraph 3.4.1 below.
    3.4.1.
    Road tyres in bias and bias/belted construction.

    Speed category

    Tyre construction

    Testing pressure

     

     

    bar

    kPA

    P/Q/R/S

    standard

    2,5

    250

    T and above

    standard

    2,9

    290

    3.5.   The tyre/wheel assembly shall be stored at the temperature of the testing room for a period of at least 3 hours.
    3.6.   After this conditioning storage period the inflation pressure shall be readjusted to the value indicated in paragraph 3.4.
    3.7.   Mount the tyre and rim assembly on the test axle and ensure the assembly is freely rotating. The tyre can be rotated either by means of a drive motor acting on the tyre axis or by pressing it against a test drum.
    3.8.   Accelerate the assembly without interruption to reach within five minutes the maximum speed capability of the tyre.
    3.9.   Position the contour outline device and ascertain that it is perpendicular to the rotation of the test tyre tread.
    3.10.   Check that the peripheral speed of the tread surface is within ± 2 per cent of the maximum speed capability for the tyre. Maintain the equipment at constant speed for at least five minutes and then portray the tyre cross-section in the area of maximum deformation, or check that the tyre does not exceed the enveloping curve.

    4.   EVALUATION

    4.1.   The limiting curve (enveloping curve) specified for the mounted tyre/wheel assembly shall be as in the example below):

    Enveloping curve for centrifugal growth test

    [Bild bitte in Originalquelle ansehen]
    In accordance with paragraphs 6.1.4 and 6.1.5 of the Regulation, the following limit values have been established for the enveloping curve:

    Speed Category

    H dyn (mm)

     

    Category of Use:

    Normal

    Category of Use:

    Snow and special

    P/Q/R/S

    H × 1,10

    H × 1,15

    T/U/H

    H × 1,13

    H × 1,18

    Over 210 km/h

    H × 1,16

    4.1.1.
    The main dimensions of the enveloping curve must be adjusted, if applicable, taking into account the constant ratio K (see paragraph 2.2 above).
    4.2.   The contour of the tyre portrayed at the maximum speed shall not exceed the enveloping curve, with reference to the tyre axes.
    4.3.   The tyre is not subjected to a further test.
    Markierungen
    Leseansicht
    Verwendung von Cookies.

    Durch die Nutzung dieser Website akzeptieren Sie automatisch, dass wir Cookies verwenden. Cookie-Richtlinie

    Akzeptieren