Nokian Rotiiva AT 245/75 R17

Nokian Rotiiva AT is a winter tyre made in total of 32 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 245/75 R17 is 10mm wider than the narrowest dimension (235) and 40mm narrower than the widest one (285). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (245mm), which results in 183.75mm sidewall height.