ISO INTERNATIONAL STANDARD 4249-2 Second edition 1990-02-15 Motorcycle tyres and rims (Code-designated series) Part 2 : Tyre load ratings Pneumatiques et jantes pour motocycles (Series dont les dimensions sont designees pardescodes/ Partie 2: Capacites de charge des pneumatiques Reference number ISO 4249-2 : 1990 (E) Copyright International Organization for Standardization license with ISC networking permitted without license from IHS Not for Resale ISO 4249-2 : 1990 (E) Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has mental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all mattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. InternationalStandardISO4249-2waspreparedbyTechnicalCommitteeISO/TC31 Tyres,rimsandvalves. This second edition cancels and replaces the first edition (1so 4249-2 : 1983) and its Amendment 1 (ISO 4249-2 : 1983/Amendment 1 : 1984), tables 2 and 4, and the foot- note to table 3 of which have been technically revised (in Draft Amendment 2 and Amendment1of1984respectively). Iso 4249 consists of the following parts, under the general title Motorcycle tyres and rims(Code-designated series): Part1:Tyres Part 2: Tyre load ratings Part3:Rims ISO 1990 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 . CH-1211 Geneve 20 . Switzerland Printed in Switzerland Copyright Intermational Organization for Standardization Not for Resale INTERNATIONAL STANDARD ISO4249-2:1990 (E) Motorcycle tyres and rims (Code-designated series) Part 2: Tyre load ratings 1 Scope Table 1 -- Correlation between Load Index (LI) and tyre load-carrying capacity (TLCC) This part of ISo 4249 specifies the load ratings for an inch code-designated series of tyres for motorcycles. LI TLCC LI TLCC LI TLCC kg kg kg. NOTE - The tyres covered in ISO 4249-1 are designated by nominal 0 45 30 106 60 250 section width and nominal rim diameter in the inch code. This desig- 1 46,2 31 109 61 257 nation indicates the origin of these tyres and does not indicate a 2 47,5 32 112 62 265 preference for a unit not contained in the Sl system of units; it is 48,7 115 89 272 merely a convenient designation for a series of motorcycle tyres which 4 50 te 118 64 280 have been in existence for a long period of time. 5 51,5 35 121 65 290 6 53 36 125 66 300 7 54,5 37 128 67 307 2 Tyre load-carrying capacity 8 56 38 132 68 315 9 58 39 136 69 325 Load indices are shown in table 1. 10 60 40 140 70 335 11 61,5 3 Service condition characteristics 41 145 71 345 12 63 42 150 72 355 13 65 43 155 73 365 The characteristics shall be indicated as follows: 14 67 44 160 74 375 15 69 45 165 75 387 Load index 16 71 46 170 76 400 Speed symboi 17 73 47 175 77 412 18 75 48 180 78 425 19 77,5 49 185 79 437 20 80 50 190 80 450 21 82,5 51 195 81 462 22 85 52 200 82 475 23 87,5 53 206 83 487 24 06 tg 212 84 500 25 92,5 55 218 85 515 26 95 56 224 86 530 27 97,5 57 230 87 545 28 100 58 236 88 560 29 103 59 243 89 580 Copyrghtintematinal Organizatinor Standardization 1 Nreroductionornetorking pemitedwithout icensfromH Not for Resale