Hankook Winter i*cept evo3 W330 is a winter tyre made in total of 88 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 265/30 R20 is 50mm wider than the narrowest dimension (215) and -10mm narrower than the widest one (255). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (265mm), which results in 79.5mm sidewall height. In 265/30 R20, there is only one possible speed index for Hankook Winter i*cept evo3 W330 - "W", which is good for speeds up to 270 km/h.