Goodride Solmax 1 is a summer tyre made in total of 46 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/50 R18 is 30mm wider than the narrowest dimension (205) and 50mm narrower than the widest one (285). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (235mm), which results in 117.5mm sidewall height. In
235/50 R18, Solmax 1 usually competes against
ZV7, which is a tyre from
Avon with a rating of 12%, compared to 17% of the
Goodride in question.