Dunlop Sport Maxx RT 265/30 R20

Dunlop Sport Maxx RT is a summer tyre made in total of 56 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 265/30 R20 is 60mm wider than the narrowest dimension (205) and -10mm narrower than the widest one (255). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (265mm), which results in 79.5mm sidewall height.