Pirelli P Zero Winter 2 is a winter tyre made in total of 48 sizes, ranging from R18 to R18 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/30 R20 is 40mm wider than the narrowest dimension (235) and 0mm narrower than the widest one (275). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (275mm), which results in 82.5mm sidewall height.
Winter
