Nankang Noble Sport NS-20 225/30 R20

Nankang Noble Sport NS-20 is a summer tyre made in total of 163 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 225/30 R20 is 30mm wider than the narrowest dimension (195) and 20mm narrower than the widest one (245). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (225mm), which results in 67.5mm sidewall height.