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. 215/50 R17 is 30mm wider than the narrowest dimension (185) and -20mm narrower than the widest one (195). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (215mm), which results in 107.5mm sidewall height. In 215/50 R17, there are 2 possible speed indexes for Hankook Ventus Prime3 K125 - "W","V", which are good for speeds up to 270, 240 km/h. In 215/50 R17, Ventus Prime3 K125 usually competes against Cinturato P7, which is a tyre from Pirelli with a rating of 75%, compared to 75% of the Hankook in question.
