Hankook Winter i*cept evo3 X W330A is a winter tyre made in total of 74 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 285/40 R21 is 70mm wider than the narrowest dimension (215) and 30mm narrower than the widest one (315). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (285mm), which results in 114mm sidewall height. In 285/40 R21, there is only one possible speed index for Hankook Winter i*cept evo3 X W330A - "V", which is good for speeds up to 240 km/h. In 285/40 R21, Winter i*cept evo3 X W330A usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 88%, compared to 88% of the Hankook in question.