Hankook Ventus S1 evo Z K129 305/30 R20

Hankook Ventus S1 evo Z K129 is a summer tyre made in total of 32 sizes, ranging from R18 to R18 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 305/30 R20 is 80mm wider than the narrowest dimension (225) and 0mm narrower than the widest one (305). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (305mm), which results in 91.5mm sidewall height.