Royal Black Royal Explorer 215/45 R18

Royal Black Royal Explorer is a tyre made in total of 11 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 215/45 R18 is 10mm wider than the narrowest dimension (205) and 70mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (215mm), which results in 96.75mm sidewall height.