本文件规定了农业拖拉机、挂车和机器用斜交结构（帘布层等级标记系列）的代码指定轮胎的使用名称和尺寸。 ISO 4251-2中给出了轮胎额定载荷。 注:ISO 13442涵盖了由ISO 18805规定的分类代码R-4或后缀“IND”标识的用于建筑应用（工业拖拉机）的斜交轮胎代码（帘布层等级标记系列）。 ISO 8664涵盖了农业拖拉机驱动轮径向结构的代码指定轮胎。 ISO 18807涵盖了ISO 18805中规定的分类代码LS标识的林业机械用代码指定斜交轮胎（帘布层等级标记系列）。

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 ISO 13442. 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.