ISO 4251-2:2019
Code designated diagonal tyres (ply rating marked series) for agricultural tractors, trailers and machines — Part 2: Tyre load ratings
This document establishes the load ratings of the diagonal code designated (ply rating marked series) tyres for agricultural tractors, trailers and machines.
Tyre designation and dimensions, and approved rim contours are given in ISO 4251‑1.
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 part of ISO 13442.
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.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$240.87 NZD
|
|
| HardCopy |
$277.39 NZD
|
|
| Networkable PDF |
Price varies
|
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Tyre markings
4.1 General
4.2 Tyre size designation and additional information
4.3 Load rating
4.4 Service description
4.4.1 General
4.4.2 Agricultural tractor drive wheel tyres
4.4.3 Agricultural tractor steering wheel tyres
4.4.4 Agricultural implement tyres
5 Tyre loads
5.1 Agricultural tractor drive wheel tyres
5.1.1 General
5.1.2 Tyres marked with a supplementary service description
5.1.3 Tractor drive wheel tyres on combine harvesters
5.2 Agricultural tractor steering wheel tyres
5.2.1 General
5.2.2 Tyres marked with additional service description
5.2.3 Tractor steering wheel tyres on combine harvesters
5.3 Agricultural implement tyres
5.4 Other tyre types
Annex A (normative) Basic tyre loads (BTL) for tyres used as singles at reference inflation pressures (IP) and Tyre loads at different speeds (load/speed relationship)
Annex B (normative) Tyres with nominal rim diameter codes 15.3 and 16.1 and small agricultural tractor tyres
Bibliography
Keep me up-to-date
Register to receive notifications when updates are made to this standard.
Related Information
Similar Standards
-
BS AU 50-1.4.4b:1992
Tyres and wheels. Tyres. Agricultural tractor and machine tyres, Specification for ply rating marked series tyres for log skidders, Agricultural tractor and machine tyres Specification for ply rating marked series tyres for logging and forestry service
-
BS ISO 11795:2018+A1:2022
Agricultural tractor drive wheel tyres. Explanation of rolling circumference index (RCI) and speed radius index (SRI) and method of measuring tyre rolling circumference
-
BS ISO 18804:2021
Rims for agricultural, forestry and construction machines
-
BS ISO 18804:2021 - TC
Tracked Changes. Rims for agricultural, forestry and construction machines
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Tyre markings
4.1 General
4.2 Tyre size designation and additional information
4.3 Load rating
4.4 Service description
4.4.1 General
4.4.2 Agricultural tractor drive wheel tyres
4.4.3 Agricultural tractor steering wheel tyres
4.4.4 Agricultural implement tyres
5 Tyre loads
5.1 Agricultural tractor drive wheel tyres
5.1.1 General
5.1.2 Tyres marked with a supplementary service description
5.1.3 Tractor drive wheel tyres on combine harvesters
5.2 Agricultural tractor steering wheel tyres
5.2.1 General
5.2.2 Tyres marked with additional service description
5.2.3 Tractor steering wheel tyres on combine harvesters
5.3 Agricultural implement tyres
5.4 Other tyre types
Annex A (normative) Basic tyre loads (BTL) for tyres used as singles at reference inflation pressures (IP) and Tyre loads at different speeds (load/speed relationship)
Annex B (normative) Tyres with nominal rim diameter codes 15.3 and 16.1 and small agricultural tractor tyres
Bibliography