Nankang NS-20 215/40 R15

Nankang NS-20 is a summer tyre made in total of 15 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 215/40 R15 is 20mm wider than the narrowest dimension (195) and 40mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (215mm), which results in 86mm sidewall height.