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BS ISO 4000-1:2024 - TC Tracked Changes. Passenger car tyres and rims - Tyres (metric series), 2024
- A-30461172.pdf [Go to Page]
- undefined
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Designation [Go to Page]
- 4.1 Size and construction [Go to Page]
- 4.1.1 Characteristics
- 4.1.2 Nominal section width
- 4.1.3 Nominal aspect ratio
- 4.1.4 Tyre construction code
- 4.1.5 Nominal rim diameter code
- 4.2 Service description [Go to Page]
- 4.2.1 General
- 4.2.2 Load index
- 4.2.3 Speed symbol
- 4.2.4 Speed category
- 4.3 Other service characteristics
- 5 Marking
- 6 Tyre dimensions [Go to Page]
- 6.1 Rounding values
- 6.2 Calculation of design tyre dimensions [Go to Page]
- 6.2.1 Theoretical rim width, Rth
- 6.2.2 Measuring rim width code, Rmc
- 6.2.3 Design tyre section width, S
- 6.2.4 Design tyre section height, H
- 6.2.5 Design tyre overall diameter, D0
- 6.2.6 Guidelines
- 6.3 Calculation of maximum overall (grown) tyre dimensions in service tyre mounted on their measuring rims [Go to Page]
- 6.3.1 General
- 6.3.2 Maximum overall (grown) width in service, Wmax
- 6.3.3 Maximum overall (grown) diameter in service, D0,max
- 6.4 Calculation of minimum tyre dimensions for radial tyres mounted on their measuring rims [Go to Page]
- 6.4.1 Minimum tyre section width, Smin
- 6.4.2 Minimum tyre overall diameter, D0,min
- 6.5 Range of approved rims
- 7 Tyre dimension measurement procedure
- 8 Inflation pressures
- 9 Load carrying-capacities
- 10 Choice of tyre sizes
- 11 Camber angle
- Annex A (informative) Guideline values for metric-series tyres
- Annex B (normative) Load indices for passenger car tyres
- Annex C (normative) Minimum inflation pressure for intermediate load
- Annex D (informative) Other existing size markings
- Bibliography [Go to Page]
