ISO INTERNATIONAL STANDARD 29802 Second edition 2017-06 All-terrain (AT) tyres and rims Symbol marked pneumatic tyres on 5° tapered rims Designation, dimension, marking and load ratings Pneumatiqueset jantes tout terrains-Pneumatiques marqués par un symbole pour jantes a 5°-Designation, cotes, marquage et capacités de charge Referencenumber IS029802:2017(E) iso Intemational Organization for Standardization @ISO2017 ed without license from IHS IS029802:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISo copyright office Ch. de Blandonnet 8.CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 [email protected] www.iso.org Uicensee-ZHEJIANG INSTOF STANDARDIZRoISQl.7 -All rights reserved etworking permitted without license from IHS Not for Resale, 2017/9/11 05:34:32 IS029802:2017(E) Contents Page Foreword ..V 1 Scope. 2 Normativereferences 3 Terms and definitions 4 Tyre size designations .2 4.1 Dimensional and constructional characteristics .2 4.1.1 .2 General. 4.1.2 Prefix. 22 4.1.3 Nominal overall diametercode 4.1.4 Nominal section width code 2 4.1.5 Tyre construction code. .3 4.1.6 Nominal rim diameter code 3 4.2 Service condition. 3 4.2.1 General .3 4.2.2 Symbol of reference inflation pressure 4 4.2.3 Servicedescription ..4 4.3 Other servicecharacteristics. .4 5 Marking .4 6 Tyre dimensions .5 6.1 General 6.2 Calculation of design tyre dimensions .5 6.2.1 Theoretical rim width, Rth 6.2.2 Measuring rim width, Rm 6.2.3 Design tyre section width, Design tyre overall diameter, Do 6.2.4 6 6.2.5 Design tyre section height, H. .6 6.3 Calculation of"maximum overall tyre dimensions" 6 6.3.1 General .6 6.3.2 Maximum tyre overall width, Wmax. .6 6.3.3 Maximum tyre overall diameter, Do,max. ..6 6.4 Calculation of"maximum overall grown tyre dimensions" 6.4.1 General. .6 6.4.2 Maximum grown tyre overall width in service, wg 6.4.3 Maximum dynamic tyre overall diameter in service, Do,dyn. .7 6.5 Calculation of"minimum tyre dimensions" 6.5.1 1 General 6.5.2 Minimum tyre section width, Smin. ..7 6.5.3 Minimum tyre overall diameter, Do,min ..7 6.6 Range of approved rims widths .7 7 Method ofmeasurement oftyre dimensions ..8 8 Reference load carrying capacity ..8 9 Load ratings ..9 10 Inflationpressures ..9 11 Rims 11.1 Designation and marking .9 11.2 Rimcontours .10 11.3 Rimdiameterandhumpcircumference ..11 12 Valve hole .11 12.1 General ..11 12.2 Snap-in valves .11 iii Licensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ithout license from IHS Not for Resale, 2017/9/11 05:34:32 No reproduction or networking perr