Nokian WR Snowproof is a winter tyre made in total of 59 sizes, ranging from R14 to R14 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 185/65 R15 is 20mm wider than the narrowest dimension (165) and 30mm narrower than the widest one (215). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (185mm), which results in 120.25mm sidewall height. In 185/65 R15, there is only one possible speed index for Nokian WR Snowproof - "T", which is good for speeds up to 190 km/h. In 185/65 R15, WR Snowproof usually competes against EuroWinter HS01, which is a tyre from Falken with a rating of 53%, compared to 46% of the Nokian in question.