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BS ISO 8664:2018

$102.76

Tyres for agricultural tractors and machines. Code-designated and service-description marked radial drive-wheel tyres

Published By Publication Date Number of Pages
BSI 2018 22
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This document specifies the marking, dimensions, load ratings and reference speeds for code-designated agricultural tractor drive-wheel tyres with service description (load index and speed symbol).

It applies to tyres of radial construction in the speed categories 40 km/h (speed symbol A8), and 50 km/h (speed symbol B).

NOTE Code designated series of:

  • diagonal (ply rating marked) tyres for agricultural tractors and machines are specified in ISO 4251‑1 and ISO 4251‑2;

  • tyres for logging and forestry machines are specified in ISO 188071;

  • tyres for construction/industrial tractors are specified in ISO 13442.

1 To be published.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Tyre marking
4.1 General
4.2 Supplementary service description
4.3 Additional information
9 4.4 Tyre classification and nomenclature
4.5 Tyre maximum pressure for bead seating pictogram
5 Tyre dimensions
6 Tyre load ratings
10 7 Tyre applications other than at reference speed
7.1 General
7.2 Field applications with high and sustained torque
7.3 Tyres marked with additional service description
11 8 Tyre application on combine harvesters
9 Tyre parameters for vehicle speed reference
12 Annex A (normative) Tyre size designations, measurement rims and tyre dimensions
14 Annex B (normative) Load index and basic tyre load with reference inflation pressures 120 kPa, 160 kPa, 210 kPa and 250 kPa
16 Annex C (normative) Approved rim contours
18 Annex D (normative) Rolling circumference (RC), rolling circumference index (RCI) and speed radius index (SRI)
20 Bibliography
BS ISO 8664:2018
$102.76