Michelin CrossClimate+ is a allround tyre made in total of 85 sizes, ranging from R13 to R13 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 225/40 R19 is 80mm wider than the narrowest dimension (145) and 30mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In 225/40 R19, there is only one possible speed index for Michelin CrossClimate+ - "Y", which is good for speeds up to 300 km/h. In 225/40 R19, CrossClimate+ usually competes against AllSeasonContact 2, which is a tyre from Continental with a rating of 85%, compared to 0% of the Michelin in question.