Nankang Sportnex AS-2+ 255/45 R17

Nankang Sportnex AS-2+ is a summer tyre made in total of 90 sizes, ranging from R13 to R13 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 255/45 R17 is 80mm wider than the narrowest dimension (175) and 30mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (255mm), which results in 114.75mm sidewall height.