Pirelli WINTER SOTTOZERO Serie III is a winter tyre made in total of 227 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/35 R21 is 50mm wider than the narrowest dimension (205) and 60mm narrower than the widest one (315). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (255mm), which results in 89.25mm sidewall height. In
255/35 R21, WINTER SOTTOZERO Serie III usually competes against
P ZERO PZ4, which is a tyre from
Pirelli with a rating of 86%, compared to 0% of the
Pirelli in question.
