Hankook Ventus Prime3 K125 is a summer tyre made in total of 149 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/55 R17 is 20mm wider than the narrowest dimension (185) and -10mm narrower than the widest one (195). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (205mm), which results in 112.75mm sidewall height. In 205/55 R17, there is only one possible speed index for Hankook Ventus Prime3 K125 - "V", which is good for speeds up to 240 km/h. In 205/55 R17, Ventus Prime3 K125 usually competes against Wetproof, which is a tyre from Nokian with a rating of 87%, compared to 88% of the Hankook in question.