Pirelli WINTER SOTTOZERO Serie III is a winter tyre made in total of 228 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (195mm), which results in 107.25mm sidewall height. In 195/55 R20, there is only one possible speed index for Pirelli WINTER SOTTOZERO Serie III - "H", which is good for speeds up to 210 km/h. In 195/55 R20, WINTER SOTTOZERO Serie III usually competes against SP Sport MAXX RT2, which is a tyre from Dunlop with a rating of 72%, compared to 0% of the Pirelli in question.