Standards Development
This International Standard specifies test methods for verifying the capabilities of tyres for motorcycles. Of the test methods presented, only some may be required depending on the type of tyre to be tested.
The tests are carried out in the laboratory under controlled conditions.
It includes a strength test for assessing the capability of the tyre structure, with respect to breaking energy, in the tread area. But it does not apply to radial-ply tyres.
A second test, the endurance test, assesses the resistance of the tyre with respect to service at full load and moderate speed over long distances.
The third test, the high-speed test, assesses the capability of the tyre as related to service at the maximum speed capability of the tyre. It is not applicable to tyres with a speed capability below 130 km/h.
The centrifugal growth test assesses the maximum growth of the tyre under the influence of centrifugal forces at the maximum speed capability of the tyre. This is applicable only to road tyres with speed symbols P and above.
The test methods presented in this International Standard are not intended for gradation of tyre performance or quality levels.
This International Standard is applicable to all motorcycle tyres.
This international Standard specifies test methods for verifying the capabilities of tyres for motorcycles. But some test methods become unsuitable for some latest regulations or trends of regulation so that revision will be required.
For the strength test for assessing the capability of the tyre structure, with respect tobreaking energy, in the tread area. But it does not need to apply to radial-ply tyres.
For the high-speed test, drum curvature correction on 1,7 m drum is considered in UN/R75 (term1 & 2) and ISO 10231(term1).
10 km/h correction on 1,7 m drum is applied, compared to 2,0 m drum.
This correction should be also considered in ISO 10231(term 2).
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