Michelin PILOT ALPIN 5 325/30 R21

Michelin PILOT ALPIN 5 is a winter tyre made in total of 153 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 325/30 R21 is 120mm wider than the narrowest dimension (205) and -10mm narrower than the widest one (315). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (325mm), which results in 97.5mm sidewall height. In 325/30 R21, 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.