1 Scope
This standard specifies the terms and definitions, classification, size designations, basic parameters, main dimensions and measuring methods of electric bicycle tyres.
This standard is applicable to the pneumatic tyres for electric bicycle.
This standard is not applicable to non-pneumatic tyres.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documents (including any amendment) applies.
GB/T 6326 Tyre terms and definitions
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 31580 Series of electric bicycle rims
HG/T 2906 Static loaded performance testing method for cycle tyres
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 6326 and the following apply.
3.1
croctchet type tyre
tyre with bead core made by steel wire or other high-strength materials, and the shape of bead matching with croctchet type (CT) rim
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Size designations, basic parameters and main dimensions
6 Measurement method
Annex A (Normative) Calculation of tyre dimensions
Annex B (Informative) New tyres with section width (S) exceeding 54 mm - basic parameters and main dimensions
