Nokian Outpost At 255/75 R17

Nokian Outpost At is a 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. 255/75 R17 is 20mm wider than the narrowest dimension (235) and 30mm narrower than the widest one (285). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (255mm), which results in 191.25mm sidewall height.