Fronway Fronwing AS 235/40 R18

Fronway Fronwing AS is a allround tyre made in total of 79 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/40 R18 is 90mm wider than the narrowest dimension (145) and 80mm narrower than the widest one (315). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (235mm), which results in 94mm sidewall height.