Pirelli P ZERO 345/25 R20

Pirelli P ZERO is a summer tyre made in total of 332 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 345/25 R20 is 140mm wider than the narrowest dimension (205) and -10mm narrower than the widest one (335). This tyre profile of 25 means the sidewall height of the tyre is 25% of the tyre width (345mm), which results in 86.25mm sidewall height.