Nokian Seasonproof 1 is a allround tyre made in total of 67 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 215/55 R18 is 50mm wider than the narrowest dimension (165) and 40mm narrower than the widest one (255). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (215mm), which results in 118.25mm sidewall height. In
215/55 R18, Seasonproof 1 usually competes against
Turanza All Season 6, which is a tyre from
Bridgestone with a rating of 92%, compared to 47% of the
Nokian in question.
