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BS AU 50-1.2.1b:2001

Current
Current

The latest, up-to-date edition.

Tyres and wheels. Tyres. Commercial vehicle tyres Tyres
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

10-08-2001

Publisher

British Standards Institution

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

Specifies the designation, dimensions and load ratings of the metric series of tyres primarily meant for trucks and buses. Applies to bias-belted, diagonal and radial tyres for trucks and buses, mounted on 5 Degree tapered rims and on 15 Degree tapered (drop-centre) rims.

This part of ISO 4209 specifies the designation, dimensions and load ratings of the metric series of tyres primarily intended for trucks and buses.

It is applicable to bias-belted, diagonal and radial tyres for trucks and buses, mounted on 5° tapered rims and on 15°tapered (drop-centre) rims.

It is also applicable to different concepts and types of tyres and rims; in these cases, however, appropriate rim/section ratios K1, K4, coefficients K2, K3, CR and construction codes have been added to Tables 3, 4 and 5.

ISO 4209-2 deals with requirements for rims.

Committee
AUE/4
DevelopmentNote
Supersedes BS AU50-1.2.1A(1995). Also numbered as ISO 4209-1 Supersedes 97/711159 DC (10/2001)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current
Supersedes

17/30353976 DC : 0 BS AU 50-2.7B - TYRES AND WHEELS - PART 2: WHEELS AND RIMS - SECTION 7B: CODE OF PRACTICE FOR THE SELECTION AND CARE OF TYRES AND WHEELS FOR COMMERCIAL VEHICLES
BS AU 50-2.7a:1995 Tyres and wheels. Wheels and rims Code of practice for the selection and care of tyres and wheels for commercial vehicles
BS AU 50-2.7b:2017 Tyres and wheels Wheels and rims. Section 7b: Code of practice for the selection and care of tyres and wheels for commercial vehicles

ISO 4223-1:2002 Definitions of some terms used in the tyre industry Part 1: Pneumatic tyres

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