CST Medallion Winter WCP1 is a winter tyre made in total of 49 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 70mm wider than the narrowest dimension (155) and 30mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. Latest test in
225/40 R18 was held by ADAC in 2025, where Medallion Winter WCP1 received rating "Poor" and finished on the 30. place. It was tested on a
VW Golf.
Winter
