Pirelli P Zero Winter 2 325/30 R21

Pirelli P Zero Winter 2 is a winter tyre made in total of 75 sizes, ranging from R18 to R18 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 325/30 R21 is 90mm wider than the narrowest dimension (235) and -30mm narrower than the widest one (295). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (325mm), which results in 97.5mm sidewall height. In 325/30 R21, P Zero Winter 2 usually competes against UltraGrip Performance 3, which is a tyre from GoodYear with a rating of 95%, compared to 97% of the Pirelli in question.