Pirelli Scorpion Winter is a winter tyre made in total of 212 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 295/35 R21 is 80mm wider than the narrowest dimension (215) and 30mm narrower than the widest one (325). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (295mm), which results in 103.25mm sidewall height. In 295/35 R21, there is only one possible speed index for Pirelli Scorpion Winter - "V", which is good for speeds up to 240 km/h. In 295/35 R21, Scorpion Winter usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 92%, compared to 53% of the Pirelli in question.