Bridgestone Potenza Sport 255/40 R20

Bridgestone Potenza Sport is a summer tyre made in total of 192 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/40 R20 is 50mm wider than the narrowest dimension (205) and 100mm narrower than the widest one (355). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R20, Potenza Sport usually competes against P ZERO PZ4, which is a tyre from Pirelli with a rating of 86%, compared to 87% of the Bridgestone in question.