Michelin CrossClimate 2 SUV is a allround tyre made in total of 47 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (225mm), which results in 112.5mm sidewall height. In 225/50 R18, there are 2 possible speed indexes for Michelin CrossClimate 2 SUV - "V","W", which are good for speeds up to 240, 270 km/h.