Michelin Pilot Alpin PA4 is a winter tyre made in total of 116 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (225mm), which results in 112.5mm sidewall height. In
225/50 R18, Pilot Alpin PA4 usually competes against
Winter i*cept evo3 W330, which is a tyre from
Hankook with a rating of 87%, compared to 0% of the
Michelin in question.