ISO 4251-1:2019 PDF

Scope: This document establishes the designation in use and the dimensions of code designated tyres in diagonal construction (ply rating marked series) for agricultural tractors, trailers and machines. Tyre load ratings are given in ISO 4251-2. NOTE Code designated diagonal tyres (ply rating marked series) for construction applications (industrial tractors), identified by the classification code R-4, as specified in ISO 18805, or by suffix "IND" are covered by Code designated tyres in radial construction for drive wheels of agricultural tractors are covered by ISO 8664. Code designated diagonal tyres (ply rating marked series) for forestry machines, identified by the classification code LS, as specified in ISO 18805, are covered by ISO 18807.

ISO 4251-1:2019 Referenced Document

ISO 18804 Rims for agricultural, forestry and construction machines*， 2021-07-31 Update
ISO 18805 Tyre classification - Agricultural, forestry and construction machines
ISO 4223-1:2017 Definitions of some terms used in the tyre industry - Part 1: Pneumatic tyres

2019 ISO 4251-1:2019 Code designated diagonal tyres (ply rating marked series) for agricultural tractors, trailers and machines — Part 1: Tyre designation and dimensions, and approved rim contours
2017 ISO 4251-1:2017 Tyres (ply rating marked series) and rims for agricultural tractors and machines - Part 1: Tyre designation and dimensions, and approved rim contours
2012 ISO 4251-1:2005/Amd 1:2012 Tyres (ply rating marked series) and rims for agricultural tractors and machines - Part 1: Tyre designation and dimensions, and approved rim contours; Amendment 1
2005 ISO 4251-1:2005 Tyres (ply rating marked series) and rims for agricultural tractors and machines - Part 1: Tyre designation and dimensions, and approved rim contours
1998 ISO 4251-1:1998 Tyres (ply rating marked series) and rims for agricultural tractors and machines - Part 1: Tyre designation and dimensions, and approved rim contours
1992 ISO 4251-1:1992 Tyres (ply rating marked series) and rims for agricultural tractors and machines; part 1: tyre designation and dimensions
1988 ISO 4251-1:1988 Tyres and rims (existing series) for agricultural tractors and machines — Part 1: Tyre designation and dimensions
1980 ISO 4251-1:1980 Title missing - Legacy paper document