BS AU 50-1.6.6b:1998

National foreword
Foreword
1 Scope
2 Normative references
3 Definitions
      3.1 bead separation
      3.2 belt separation
      3.3 chunking
      3.4 cord separation
      3.5 cracking
      3.6 innerliner separation
      3.7 open splice
      3.8 ply separation
      3.9 sidewall separation
      3.10 tread separation
      3.11 test rim
      3.12 test drum speed
      3.13 type speed
      3.14 maximum load rating
4 Test equipment and its requirements
5 Testing
6 Requirements
Annex A (normative) Enveloping curve for the contour of the
                    tyre for the centrifugal growth test
Annex B (informative) Tyres suitable for speeds over 240 km/h
Annex F (informative) Bibliography
Figure A.1
Table 1 - Test parameters for endurance
Table 2 - Inflation pressures for high speed
Table 3 - Inflation pressures for centrifugal growth
Table 4 - Minimum breaking energy
Table B.1 - Initial test speeds

Defines test methods to verify the capabilities of motorcycle tyres. Only some of the presented test methods may be required, depending on the type of tyre being tested. Tests are carried out under controlled laboratory conditions. Includes a strength test rekevant to the tread area; an endurance test and a high-speed test. The centrifugal growth test assesses the maximum growth of the tyre under centrifugal forces at the maximum speed capability of the tyre, and is applicable only to tyres with speed symbols P and above. None of the given test methods are intended for gradation of tyre performance or quality levels.