Riken Road-Terrain 285/65 R17

Riken Road-Terrain is a tyre made in total of 15 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 285/65 R17 is 50mm wider than the narrowest dimension (235) and 0mm narrower than the widest one (285). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (285mm), which results in 185.25mm sidewall height.