Nokian WR Snowproof 225/40 R18

Nokian WR Snowproof is a winter tyre made in total of 60 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 60mm wider than the narrowest dimension (165) and -10mm narrower than the widest one (215). 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. In 225/40 R18, WR Snowproof usually competes against MP93 Nordicca, which is a tyre from Matador with a rating of 40%, compared to 41% of the Nokian in question.