Sailun Atrezzo ZSR SUV 255/50 R20

Sailun Atrezzo ZSR SUV is a summer tyre made in total of 34 sizes, ranging from R18 to R18 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/50 R20 is 30mm wider than the narrowest dimension (225) and 30mm narrower than the widest one (285). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (255mm), which results in 127.5mm sidewall height.