235/60 R18 Nokian Powerproof 1 variants
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Nokian Powerproof 1 is a summer tyre made in total of 54 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/60 R18 is 30mm wider than the narrowest dimension (205) and 40mm narrower than the widest one (275). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (235mm), which results in 141mm sidewall height. In 235/60 R18, there is only one possible speed index for Nokian Powerproof 1 - "W", which is good for speeds up to 270 km/h.
Nokian Powerproof 1 is made in 54 sizes, starting from 205/45 R17 up to 275/45 R20.
