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BS ISO 4251-1:2017 Tyres (ply rating marked series) and rims for agricultural tractors and machines - Tyre designation and dimensions, and approved rim contours >
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BS ISO 4251-1:2017 Tyres (ply rating marked series) and rims for agricultural tractors and machines - Tyre designation and dimensions, and approved rim contours, 2017
- National foreword
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Marking
- 4.1 Tyre size designation
- 4.2 Load rating
- 4.3 Categories of use
- 4.3.1 Agricultural drive wheels — Tractor tyres
- 4.3.2 Agricultural steering wheels — Tractor tyres
- 4.3.3 Agricultural implement tyres
- 4.4 Additional information
- 4.5 Pictogram for maximum tyre bead seating pressure (optional)
- 5 Dimensions and tolerances
- 5.1 Agricultural drive wheels — Tractor tyres
- 5.2 Agricultural steering wheels — Tractor tyres
- 5.3 Agricultural implement tyres
- 6 Tyre dimension parameters for vehicle speed reference
- 6.1 Speed radius index
- 6.2 Rolling circumference index
- 7 Tyre and rim coordination
- 8 Tubes
- Annex A (informative) Tyres with nominal rim diameter codes 15.3, 16.1 and tyres for small tractors
- Annex B (informative) Comparison values for rolling circumference (RC), rolling circumference index (RCI), speed radius index (SRI)
- Bibliography [Go to Page]
