Sentury Qirin 990 245/50 R20

Sentury Qirin 990 is a summer tyre made in total of 113 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 245/50 R20 is 90mm wider than the narrowest dimension (155) and 30mm narrower than the widest one (275). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (245mm), which results in 122.5mm sidewall height.