Bridgestone Blizzak LM-005 is a winter tyre made in total of 213 sizes, ranging from R14 to R14 - this particular dimension is R22, which means it fits to a 22 inch/558.8mm diameter wheel. 285/40 R22 is 130mm wider than the narrowest dimension (155) and 0mm narrower than the widest one (285). 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 R22, there is only one possible speed index for Bridgestone Blizzak LM-005 - "W", which is good for speeds up to 270 km/h.