Superla Ecoblue 4S 235/40 R18

Superla Ecoblue 4S is a allround tyre made in total of 39 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 -10mm narrower than the widest one (225). 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.