Pirelli WINTER SOTTOZERO Serie III is a winter tyre made in total of 228 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 235/50 R19 is 30mm wider than the narrowest dimension (205) and 120mm narrower than the widest one (355). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (235mm), which results in 117.5mm sidewall height. In 235/50 R19, 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 235/50 R19, WINTER SOTTOZERO Serie III usually competes against Quatrac Pro+, which is a tyre from Vredestein with a rating of 52%, compared to 0% of the Pirelli in question.