Dunlop Quattromaxx 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. 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, there is only one possible speed index for Dunlop Quattromaxx - "V", which is good for speeds up to 240 km/h. In 235/50 R18, Quattromaxx usually competes against Eagle F1 Asymmetric 3, which is a tyre from Goodyear with a rating of 0%, compared to 0% of the Dunlop in question. Latest test in 235/50 R18 was held by Autobild in 2017, where Quattromaxx received rating "Exemplary" and finished on the 3. place. It was tested on a .