Bridgestone Potenza S007 345/35 R18

Bridgestone Potenza S007 is a summer tyre made in total of 23 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 345/35 R18 is 90mm wider than the narrowest dimension (255) and -30mm narrower than the widest one (315). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (345mm), which results in 120.75mm sidewall height.