Hankook Ventus Prime3 K125 is a summer tyre made in total of 149 sizes, ranging from R15 to R15 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 205/65 R15 is 20mm wider than the narrowest dimension (185) and -10mm narrower than the widest one (195). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (205mm), which results in 133.25mm sidewall height. In 205/65 R15, there is only one possible speed index for Hankook Ventus Prime3 K125 - "H", which is good for speeds up to 210 km/h.
