Hankook Ventus Prime4 K135 is a summer tyre made in total of 52 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/50 R17 is 10mm wider than the narrowest dimension (195) and -10mm narrower than the widest one (195). 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 are 2 possible speed indexes for Hankook Ventus Prime4 K135 - "V","W", which are good for speeds up to 240, 270 km/h. In 205/50 R17, Ventus Prime4 K135 usually competes against Cinturato P7, which is a tyre from Pirelli with a rating of 75%, compared to 0% of the Hankook in question.