Pirelli Scorpion Winter 2 235/45 R21

Pirelli Scorpion Winter 2 is a winter tyre made in total of 78 sizes, ranging from R18 to R18 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 235/45 R21 is 10mm wider than the narrowest dimension (225) and 90mm narrower than the widest one (325). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (235mm), which results in 105.75mm sidewall height.