Sentury Qirin 990 is a summer tyre made in total of 113 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/45 R18 is 70mm wider than the narrowest dimension (155) and 50mm narrower than the widest one (275). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (225mm), which results in 101.25mm sidewall height. In
225/45 R18, Qirin 990 usually competes against
Sport Master, which is a tyre from
Linglong with a rating of 77%, compared to 14% of the
Sentury in question.
