Nankang Ultra Sport NS-2 285/30 R18

Nankang Ultra Sport NS-2 is a summer tyre made in total of 72 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 285/30 R18 is 110mm wider than the narrowest dimension (175) and -30mm narrower than the widest one (255). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (285mm), which results in 85.5mm sidewall height.