Bridgestone Ecopia EP500 175/55 R20

Bridgestone Ecopia EP500 is a summer tyre made in total of 8 sizes, ranging from R19 to R19 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 175/55 R20 is 20mm wider than the narrowest dimension (155) and 20mm narrower than the widest one (195). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (175mm), which results in 96.25mm sidewall height.