Yokohama BluEarth-4S AW21 is a allround tyre made in total of 100 sizes, ranging from R14 to R14 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/45 R20 is 100mm wider than the narrowest dimension (175) and -10mm narrower than the widest one (265). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height. In
275/45 R20, BluEarth-4S AW21 usually competes against
Weather Control A005 EVO, which is a tyre from
Bridgestone with a rating of 0%, compared to 40% of the
Yokohama in question.