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. 235/50 R18 is 70mm wider than the narrowest dimension (165) and 20mm narrower than the widest one (255). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (235mm), which results in 117.5mm sidewall height. In
235/50 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.
