Royal Black Royal Winter 225/55 R17

Royal Black Royal Winter is a tyre made in total of 43 sizes, ranging from R13 to R13 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 225/55 R17 is 60mm wider than the narrowest dimension (165) and 40mm narrower than the widest one (265). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height.