ISO INTERNATIONAL STANDARD 4251-1 Eighth edition 2019-07 Code designated diagonal tyres (ply rating marked series) for agricultural tractors, trailers and machines Part 1: Tyre designation and dimensions, and approved rim contours Pneumatiques diagonaux a désignation dimensionnelle par code remorques etmachines agricoles- Partie 1: Désignations et cotes des pneumatiques, et profils de jantes approuves Reference number IS0 4251-1:2019(E) os1 @ IS0 2019 IS0 4251-1:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved