Barum Polaris 3 is a winter tyre made in total of 65 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 205/65 R15 is 70mm wider than the narrowest dimension (135) and 40mm narrower than the widest one (245). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (205mm), which results in 133.25mm sidewall height. In 205/65 R15, there are 2 possible speed indexes for Barum Polaris 3 - "T","H", which are good for speeds up to 190, 210 km/h. In 205/65 R15, Polaris 3 usually competes against Radial Champiro WinterPro 2, which is a tyre from GT with a rating of 60%, compared to 0% of the Barum in question.