Michelin PILOT ALPIN 5 SUV is a winter tyre made in total of 114 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/45 R20 is 50mm wider than the narrowest dimension (225) and 40mm narrower than the widest one (315). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height. In 275/45 R20, there is only one possible speed index for Michelin PILOT ALPIN 5 SUV - "V", which is good for speeds up to 240 km/h. In 275/45 R20, PILOT ALPIN 5 SUV usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 87%, compared to 98% of the Michelin in question.