Pirelli Scorpion ZERO All Season 255/60 R20

Pirelli Scorpion ZERO All Season is a summer tyre made in total of 73 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/60 R20 is 20mm wider than the narrowest dimension (235) and 70mm narrower than the widest one (325). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (255mm), which results in 153mm sidewall height.