ISO 11795:2018
Agricultural tractor drive wheel tyres — Explanation of rolling circumference index (RCI) and speed radius index (SRI) and method of measuring tyre rolling circumference
This document specifies the method for measuring rolling circumference for new tyres, under loaded conditions, made for use on agricultural tractors and machines, and applies to agricultural tractor drive wheel tyres in diagonal and radial construction. It also includes an explanation of the rolling circumference index (RCI) and speed radius index (SRI).
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test conditions
5.1 Tyre installation
5.2 Test tyres
5.3 Tyre load and inflation pressure
5.4 Tyre measurement
5.5 Test course
5.6 Weather conditions
5.7 Test measurement
5.8 Test speed
6 Method of test
6.1 Test preparation
6.2 Test procedure
7 Expression of results
8 Test report
9 Other test conditions
10 Rolling circumference index (RCI)
11 Speed radius index (SRI)
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test conditions
5.1 Tyre installation
5.2 Test tyres
5.3 Tyre load and inflation pressure
5.4 Tyre measurement
5.5 Test course
5.6 Weather conditions
5.7 Test measurement
5.8 Test speed
6 Method of test
6.1 Test preparation
6.2 Test procedure
7 Expression of results
8 Test report
9 Other test conditions
10 Rolling circumference index (RCI)
11 Speed radius index (SRI)