Royal Black Royal Sport 285/65 R17

Royal Black Royal Sport is a tyre made in total of 30 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 285/65 R17 is 70mm wider than the narrowest dimension (215) 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.