Kleber Dynaxer HP4 is a summer tyre made in total of 120 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/45 R18 is 80mm wider than the narrowest dimension (155) and 0mm narrower than the widest one (235). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (235mm), which results in 105.75mm sidewall height. In 235/45 R18, Dynaxer HP4 usually competes against Advantage, which is a tyre from BFGoodrich with a rating of 68%, compared to 76% of the Kleber in question.