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BS ISO 29802:2017 All-terrain (AT) tyres and rims. Symbol marked pneumatic tyres on 5° tapered rims. Designation, dimension, marking and load ratings >
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BS ISO 29802:2017 All-terrain (AT) tyres and rims. Symbol marked pneumatic tyres on 5° tapered rims. Designation, dimension, marking and load ratings, 2017
- National foreword
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Tyre size designations
- 4.1 Dimensional and constructional characteristics
- 4.1.1 General
- 4.1.2 Prefix
- 4.1.3 Nominal overall diameter code
- 4.1.4 Nominal section width code
- 4.1.5 Tyre construction code
- 4.1.6 Nominal rim diameter code
- 4.2 Service condition
- 4.2.1 General
- 4.2.2 Symbol of reference inflation pressure
- 4.2.3 Service description
- 4.3 Other service characteristics
- 5 Marking
- 6 Tyre dimensions
- 6.1 General
- 6.2 Calculation of design tyre dimensions
- 6.2.1 Theoretical rim width, Rth
- 6.2.2 Measuring rim width, Rm
- 6.2.3 Design tyre section width, S
- 6.2.4 Design tyre overall diameter, Do
- 6.2.5 Design tyre section height, H
- 6.3 Calculation of “maximum overall tyre dimensions”
- 6.3.1 General
- 6.3.2 Maximum tyre overall width, Wmax
- 6.3.3 Maximum tyre overall diameter, Do,max
- 6.4 Calculation of “maximum overall grown tyre dimensions”
- 6.4.1 General
- 6.4.2 Maximum grown tyre overall width in service, WG
- 6.4.3 Maximum dynamic tyre overall diameter in service, Do,dyn
- 6.5 Calculation of “minimum tyre dimensions”
- 6.5.1 General
- 6.5.2 Minimum tyre section width, Smin
- 6.5.3 Minimum tyre overall diameter, Do,min
- 6.6 Range of approved rims widths
- 7 Method of measurement of tyre dimensions
- 8 Reference load carrying capacity
- 9 Load ratings
- 10 Inflation pressures
- 11 Rims
- 11.1 Designation and marking
- 11.2 Rim contours
- 11.3 Rim diameter and hump circumference
- 12 Valve hole
- 12.1 General
- 12.2 Snap-in valves
- Annex A (normative) Load indices for all-terrain (AT) tyres [Go to Page]