Barum Polaris 6 is a winter tyre made in total of 99 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/55 R18 is 80mm wider than the narrowest dimension (155) and 20mm narrower than the widest one (255). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (235mm), which results in 129.25mm sidewall height. In
235/55 R18, Polaris 6 usually competes against
Speed-Grip 5, which is a tyre from
Semperit with a rating of 78%, compared to 83% of the
Barum in question.
Winter
