Nankang Ultra Sport NS-2 275/40 R17

Nankang Ultra Sport NS-2 is a summer tyre made in total of 72 sizes, ranging from R13 to R13 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 275/40 R17 is 100mm wider than the narrowest dimension (175) and -20mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (275mm), which results in 110mm sidewall height.