ISO INTERNATIONAL STANDARD 6054-1 Third edition 1994-12-15 Motorcycle tyres and rims (code-designated series) -- Diameter codes 4 to 12 Part 1: Tyres désignees par des codes) -- Codes de diametre 4 a 12 - Partie 1: Pneumatiques tso Reference number ISO 6054-1:1994(E) IS0 6054-1:1994(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approva! by at least 75 % of the member bodies casting a vote. ISO/TC 31, Tyres, rims and valves, Subcommittee SC 10, Cycle, moped, motorcycle tyres and rims. Thisthird edition cancelsandreplacesthe second edition (Is0 6054-1:1990), of which it constitutes a technical revision. ISo 6054 consists of the following parts, under the general title Motor- cycle tyres and rims (code-designated series) - Diameter codes 4 to 12: -Part1:Tyres Part 2: Rims Annex A of this part of isO 6054 is for information only ISO 1994 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced orutilized inany form orby anymeans,electronic ormechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56·CH-1211Geneve20·Switzerland Printed in Switzerland ii INTERNATIONAL STANDARD ISO ISO 6054-1:1994(E) Motorcycle tyres and rims (code-designated series) - Diameter codes 4 to 12 Part 1: Tyres Scope 4Tyre designation This part of IsO 6054 lays down the designation, di- The designation of the tyre shall be shown on its mensions, and ioad ratings for an inch-code- sidewall and shall include the following markings, to designated series of tyres for motorcycles, fitted on be shown close to each other: rims with a nominal diameter corresponding to the codes 4, 5, 6, 7, 8, 9. 10 and 12. - size dimension (see 4.1): IS0 6054-2 deals with the requirements for rims. service description (see 4.2) NOTE 1 The parallel International Standards in the metric series are ISO 5751-1[4], ISO 5751-2 [5] and ISO 5751-316]. 4.1 Size dimension The characteristics shall be indicated as follows: 2 Normative reference Nominal Nominat section - rim diameter The following standard contains provisions which, width code code through referencein this text,constituteprovisions of this part of iSO 6054. At the time of publication, the edition indicated was valid. All standards are subject 4.1.1 Nominal section width to revision, and parties to agreements based on this part of IsO 6054 are encouraged to investigate the The nominal section width shall be expressed by a possibility of applying the most recent edition of the code (see table 2 for code correlations). standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. 4.1.2 Nominal rim diameter IsO 4223-1:1989, Definitions of some terms used in The nominal rim diameter shall be expressed by a the tyre industry - Part 1: Pneumatic tyres. code (see table 1 for code correlations). 4.2 Service description 3 Definitions The characteristics shall be indicated as follows: For the purposes of this part of IsO 6054, the defi- nitions given in ISO 4223-1 apply. Load index Speed symbol