Nankang Greensport Eco 2+ 245/40 R18

Nankang Greensport Eco 2+ is a tyre made in total of 24 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/40 R18 is 110mm wider than the narrowest dimension (135) and -10mm narrower than the widest one (235). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (245mm), which results in 98mm sidewall height.