315/30 R21 Uniroyal RainExpert 3 variants

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Uniroyal RainExpert 3 is a summer tyre made in total of 62 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 315/30 R21 is 180mm wider than the narrowest dimension (135) and -90mm narrower than the widest one (225). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (315mm), which results in 94.5mm sidewall height. In 315/30 R21, RainExpert 3 usually competes against Roadhawk, which is a tyre from Firestone with a rating of 59%, compared to 0% of the Uniroyal in question.