Bridgestone Duravis R660 185/75 R14

Bridgestone Duravis R660 is a summer tyre made in total of 60 sizes, ranging from R14 to R14 - this particular dimension is R14, which means it fits to a 14 inch/355.6mm diameter wheel. 185/75 R14 is 20mm wider than the narrowest dimension (165) and 30mm narrower than the widest one (215). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (185mm), which results in 138.75mm sidewall height.