Goodride SA37 is a summer tyre made in total of 80 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/40 R18 is 50mm wider than the narrowest dimension (185) and 50mm narrower than the widest one (285). 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. In
235/40 R18, SA37 usually competes against
ZV7, which is a tyre from
Avon with a rating of 31%, compared to 0% of the
Goodride in question.
