Pirelli Cinturato All Season is a allround tyre made in total of 33 sizes, ranging from R14 to R14 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/50 R17 is 40mm wider than the narrowest dimension (165) and -50mm narrower than the widest one (155). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (205mm), which results in 102.5mm sidewall height. In 205/50 R17, there is only one possible speed index for Pirelli Cinturato All Season - "W", which is good for speeds up to 270 km/h. In 205/50 R17, Cinturato All Season usually competes against Kinergy 4S2 H750, which is a tyre from Hankook with a rating of 89%, compared to 0% of the Pirelli in question.