Michelin Pilot Sport EV 305/45 R20

Michelin Pilot Sport EV is a summer tyre made in total of 90 sizes, ranging from R19 to R19 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 305/45 R20 is 80mm wider than the narrowest dimension (225) and 10mm narrower than the widest one (315). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (305mm), which results in 137.25mm sidewall height.