Pirelli P Zero Winter 2 is a winter tyre made in total of 48 sizes, ranging from R18 to R18 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 305/30 R21 is 70mm wider than the narrowest dimension (235) and -30mm narrower than the widest one (275). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (305mm), which results in 91.5mm sidewall height. In
305/30 R21, P Zero Winter 2 usually competes against
UltraGrip Performance 3, which is a tyre from
GoodYear with a rating of 95%, compared to 94% of the
Pirelli in question.
Winter
