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245/40 R18 Nokian Seasonproof variants
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Nokian Seasonproof is a allround tyre made in total of 52 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/40 R18 is 80mm wider than the narrowest dimension (165) and 10mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (245mm), which results in 98mm sidewall height. In 245/40 R18, there is only one possible speed index for Nokian Seasonproof - "W", which is good for speeds up to 270 km/h.
Nokian Seasonproof is made in 52 sizes, starting from 165/70 R14 up to 255/40 R19.
