Michelin PILOT ALPIN 5 is a winter tyre made in total of 135 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 285/30 R20 is 80mm wider than the narrowest dimension (205) and 30mm narrower than the widest one (315). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (285mm), which results in 85.5mm sidewall height. In
285/30 R20, PILOT ALPIN 5 usually competes against
UltraGrip Performance 3, which is a tyre from
GoodYear with a rating of 95%, compared to 100% of the
Michelin in question.