Michelin Latitude Cross is a summer tyre made in total of 52 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/55 R18 is 70mm wider than the narrowest dimension (185) and 30mm narrower than the widest one (285). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (255mm), which results in 140.25mm sidewall height. In 255/55 R18, there are 2 possible speed indexes for Michelin Latitude Cross - "H","V", which are good for speeds up to 210, 240 km/h. In 255/55 R18, Latitude Cross usually competes against Kinergy 4S2 H750, which is a tyre from Hankook with a rating of 88%, compared to 0% of the Michelin in question.