Hankook Ventus S1 evo3 K127C is a summer tyre made in total of 11 sizes, ranging from R19 to R19 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/40 R20 is 40mm wider than the narrowest dimension (235) and 40mm narrower than the widest one (315). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (275mm), which results in 110mm sidewall height. In 275/40 R20, there is only one possible speed index for Hankook Ventus S1 evo3 K127C - "Y", which is good for speeds up to 300 km/h. In 275/40 R20, Ventus S1 evo3 K127C usually competes against Roadhawk, which is a tyre from Firestone with a rating of 57%, compared to 0% of the Hankook in question.