Nankang Noble Sport NS-20 is a summer tyre made in total of 124 sizes, ranging from R14 to R14 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 255/40 R17 is 100mm wider than the narrowest dimension (155) and -10mm narrower than the widest one (245). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R17, there are 2 possible speed indexes for Nankang Noble Sport NS-20 - "W","V", which are good for speeds up to 270, 240 km/h.
255/40 R17 is found on 1 vehicles: