Nokian Line SUV is a summer tyre made in total of 33 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 215/55 R18 is 10mm wider than the narrowest dimension (205) and 10mm narrower than the widest one (225). 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, there is only one possible speed index for Nokian Line SUV - "V", which is good for speeds up to 240 km/h. In 215/55 R18, Line SUV usually competes against Wetproof SUV, which is a tyre from Nokian with a rating of 55%, compared to 0% of the Nokian in question.
