Pirelli P ZERO PZ4 305/25 R22

Pirelli P ZERO PZ4 is a summer tyre made in total of 700 sizes, ranging from R13 to R13 - this particular dimension is R22, which means it fits to a 22 inch/558.8mm diameter wheel. 305/25 R22 is 160mm wider than the narrowest dimension (145) and 30mm narrower than the widest one (335). This tyre profile of 25 means the sidewall height of the tyre is 25% of the tyre width (305mm), which results in 76.25mm sidewall height.