BS AU 50-1.2.1b:2001
Current
The latest, up-to-date edition.
Tyres and wheels. Tyres. Commercial vehicle tyres Tyres
Hardcopy , PDF
English
08-10-2001
Foreword
1 Scope
2 Normative reference
3 Terms and definitions
4 Type designation
4.1 Content
4.2 Size and construction
4.2.1 Marking
4.2.2 Nominal section width
4.2.3 Nominal aspect ratio
4.2.4 Tyre construction code
4.2.5 Nominal rim diameter
4.3 Service condition characteristics
4.3.1 Marking
4.3.2 Load index
4.3.3 Speed symbol
4.4 Other service characteristics
4.5 Example
5 Tyre dimensions
5.1 Calculation of "design" tyre dimensions
5.1.1 Coefficients
5.1.2 Theoretical rim width, R[th]
5.1.3 Measuring rim width, R[m]
5.1.4 Design tyre section width, S
5.1.5 Design tyre section height, H
5.1.6 Design tyre overall diameter, D[o]
5.1.7 Values
5.2 Calculation of "maximum overall tyre dimensions in
service"
5.2.1 Maximum overall width in service, W[max]
5.2.2 Maximum overall diameter in service,
D[o, max]
5.3 Minimum dual spacing (MDS)
5.4 Approved rim widths
6 Tyre dimension tables
7 Method of measurement of tyre dimensions
8 Service characteristics
8.1 Tyre load-carrying capacity
8.2 Speed symbol
8.3 Load-carrying capacity at various speeds
Annex A (informative) Guideline values for metric series,
5 Degree rims
Annex B (informative) Guideline values for metric series,
15 Degree rims
Annex C (informative) Tyre dimension tables
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