This standard specifies the terms and definitions, classification, designation method of specifications mark and its additional marks, specifications, dimensions, pneumatic pressures, and loads and rims of motorcycle tyres.
This standard is applicable to the new pneumatic motorcycle tyres.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, all parties coming to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of these standards. For undated references, the latest editions of the normative documents referred to apply.
GB/T 6326 "Tyre Terms and Definitions" (GB/T 6326-2005, ISO 4223-1:2002, Definitions of Some Terms Used in Tyre Industry - Part 1:Pneumatic Tyres, NEQ)
GB/T 13202 "Series of Motorcycle Rims" (GB/T 13202-2007, ISO 4249-3:2004, Motorcycle Tyres and Rims (Code-designated Series) - Part 3: Rims, ISO 5995-2:1988, Moped Tyres and Rims - Part 2: Rims, ISO 6054-2:1990, Motorcycle Tyres and Rims (Code-designated Series) - Diameter Codes 4 to 12 - Part 2: Rims, MOD)
3 Terms and Definitions
For the purposes of this standard, the terms and definitions established in GB/T 6326 apply.
4 Classification
4.1 Motorcycle tyres of code-designated series
Tyres in this series are applicable to the rims with the nominal diameter being 4 to 21.
As for the tyres with the nominal rim diameter larger than or equal to 14, the cylindrical WM rims or 5° tapered MT rims shall be adopted.
As for the tyres with nominal rim diameter less than or equal to 12, the divided DT rims, drop center DC rims or 5° tapered MT rims shall be adopted, with the maximum travel speed being 100 km/h; such tyres should not be used for non-highway tasks, such as transporting etc.
4.2 Motorcycle tyres of metric series
