Hankook Winter i*cept evo2 W320 is a winter tyre made in total of 124 sizes, ranging from R15 to R15 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 225/60 R15 is 40mm wider than the narrowest dimension (185) and 60mm narrower than the widest one (285). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (225mm), which results in 135mm sidewall height. In 225/60 R15, there is only one possible speed index for Hankook Winter i*cept evo2 W320 - "H", which is good for speeds up to 210 km/h.
