Goodyear Eagle F1 Supersport RS 255/35 R20

Goodyear Eagle F1 Supersport RS is a summer tyre made in total of 9 sizes, ranging from R20 to R20 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/35 R20 is 10mm wider than the narrowest dimension (245) and 80mm narrower than the widest one (335). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (255mm), which results in 89.25mm sidewall height.