BS AU144C(1988) : LATEST

Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Performance
4. Performance test acceptance criteria
5. Tyre dimensions
6. Marking
7. Rubber under tread pattern
8. Tyre inspection before and during retreading
9. Tyre inspection after retreading
10. Repair and tyres suitable for repair and retreading
11. Repair materials
12. Car tyre tread pattern information
13. Tyre fitting lines
Appendices
A. Recommended minimum letter height dimensions for
     markings for car and commercial vehicle retreaded
     tyres
B. Load/speed performance test
C. Initial inspection before buffing and damage
     limitations
D. Inspection after buffing and damage limitations
E. Repairs and curing
F. Repairs to car tyres
G. Repairs to diagonal (cross) ply commercial vehicle
     textile tyres
H. Repairs to radial ply commercial vehicle tyres
Tables
1. Load capacity index (LI)
2. Speed category
3. Recommended minimum heights of markings
4. Car tyre test inflation pressure
5. Rotating drum test programmes for commercial vehicle
     radial ply tyres
6. Rotating drum test programmes for commercial vehicle
     radial and diagonal ply tyres
7. Injury limitations: car tyres (after preparation)
8. Injury limitations: diagonal (cross) ply commercial
     vehicle textile tyres (after preparation)
9. Injury limitations: radial ply commercial vehicle
     tyres (after preparation)
10. Tyre sizes and ply ratings with equivalent load
     indices
11. Tyre sizes where ply rating only is permitted to
     be marked
Figures
1. Typical section of diagonal ply car tyre
2. Typical section of radial ply car tyre
3. Typical section of diagonal ply commercial vehicle
     tyre
4. Typical section of radial ply commercial vehicle
     tyre
5. Typical arrangement for the rotating drum test
6. Repairable and non-repairable areas for diagonal
     and radial ply car tyres
7. Repairable and non-repairable areas for diagonal
     (cross) ply commercial vehicle textile tyres
8. Repairable and non-repairable areas for radial ply
     commercial vehicle tyres

Establishes requirements for the retreading of car and commercial vehicle pneumatic tyres for road vehicles for use on the public highway and first used after 3 January 1933. Specifies inspection procedures for the tyre carcass before and during processing, repairing and processing details, rubber depth under the tread pattern, tread pattern information, and rotating drum verification tests. The requirements apply to both tubed and tubeless retreaded tyres. Does not apply to pre-1933 tyres, temporary use spare tyres or tyres with speed categories VR or ZR.