Product description
Calculation method for Tyre diameter:
For example: Tire specifications 195/55 R15 85V Tire
Diameter conversion method: Diameter(cm)=W*AR/500+R*2.54
Formula: Diameter= W*AR/500 + 2.54*R= 195*55/500+2.54*15 =59.55
According to the calculation, Small size is suitable.
Commonly used specification
S: diameter 66cm, 13-18 inch tyres
L: diameter 80cm, 19-23 inch tyres