Royal Black Royal Commercial 185/75 R16

Royal Black Royal Commercial is a tyre made in total of 18 sizes, ranging from R14 to R14 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 185/75 R16 is 20mm wider than the narrowest dimension (165) and 50mm narrower than the widest one (235). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (185mm), which results in 138.75mm sidewall height.