Nokian WR Snowproof P is a winter tyre made in total of 55 sizes, ranging from R17 to R17 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (205mm), which results in 102.5mm sidewall height. In 205/50 R17, WR Snowproof P usually competes against Snowprox S954, which is a tyre from Toyo with a rating of 43%, compared to 44% of the Nokian in question.