Hankook Winter i*cept evo3 W330 is a winter tyre made in total of 93 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 295/30 R21 is 80mm wider than the narrowest dimension (215) and -40mm narrower than the widest one (255). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (295mm), which results in 88.5mm sidewall height. In 295/30 R21, 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.