Avon ZZ5 is a summer tyre made in total of 18 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/40 R18 is 30mm wider than the narrowest dimension (205) and 20mm narrower than the widest one (255). 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, ZZ5 usually competes against
Pilot Sport 4, which is a tyre from
Michelin with a rating of 0%, compared to 0% of the
Avon in question.
