Pirelli P ZERO PZ4 255/50 R20

Pirelli P ZERO PZ4 is a summer tyre made in total of 720 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/50 R20 is 110mm wider than the narrowest dimension (145) and 80mm narrower than the widest one (335). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (255mm), which results in 127.5mm sidewall height. In 255/50 R20, P ZERO PZ4 usually competes against Potenza Sport, which is a tyre from Bridgestone with a rating of 87%, compared to 89% of the Pirelli in question.