Royal Black Royal Passenger 185/60 R15

Royal Black Royal Passenger is a tyre made in total of 11 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 185/60 R15 is 30mm wider than the narrowest dimension (155) and 50mm narrower than the widest one (235). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (185mm), which results in 111mm sidewall height.