Michelin Pilot Sport EV 255/55 R20

Michelin Pilot Sport EV is a summer tyre made in total of 91 sizes, ranging from R19 to R19 - 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 60mm narrower than the widest one (315). 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.