Hankook Ventus S1 evo Z K129 255/55 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. 255/55 R20 is 30mm wider than the narrowest dimension (225) and 50mm narrower than the widest one (305). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (255mm), which results in 140.25mm sidewall height.