Michelin Pilot Sport CUP 2 255/40 R20

Michelin Pilot Sport CUP 2 is a summer tyre made in total of 138 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/40 R20 is 40mm wider than the narrowest dimension (215) and 70mm narrower than the widest one (325). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R20, Pilot Sport CUP 2 usually competes against Eagle F1 Supersport, which is a tyre from Goodyear with a rating of 81%, compared to 79% of the Michelin in question.