Bridgestone Turanza T005 255/70 R18

Bridgestone Turanza T005 is a summer tyre made in total of 658 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/70 R18 is 100mm wider than the narrowest dimension (155) and 60mm narrower than the widest one (315). This tyre profile of 70 means the sidewall height of the tyre is 70% of the tyre width (255mm), which results in 178.5mm sidewall height.