Pirelli Scorpion All Season SF2 is a allround tyre made in total of 32 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (235mm), which results in 141mm sidewall height. In 235/60 R18, there is only one possible speed index for Pirelli Scorpion All Season SF2 - "W", which is good for speeds up to 270 km/h.