This standard specifies the terms and definitions, classification, designations and markings, basic parameters, main dimensions and measurement methods of cycle tires.
This standard is applicable to the pneumatic tires for bicycle, tricycle and wheelbarrow.
This standard is not applicable to tubular sew-up tyres and 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 document (including any amendments) applies.
GB/T 6326 Tyre Terms and Definitions (GB/T 6326-2014, ISO 4223-1:2002, NEQ)
GB/T 8170 Rules of Rounding of for Numerical Values & Expression and Judgement of Limiting Values
GB/T 23657 Series of Cycle Rims (GB/T 23657-2009, ISO 5775-2:1996, MOD)
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 apply.
4 Classification
4.1 Tread structure
Cycle tires are classified into four types according to the structure of bead and rim: straight side (SS) tires [see Figure 1a)]; hooked bead (HB) tires [see Figure 1b)]; beaded edge (BE) tyres [see Figure 1c)]; crotchet type (CT) tires [see Figure 1d)].
