What size tire is equivalent to 275-60 R20?
Finding the Right Equivalent Sizes Several tire sizes closely match the 275/60R20’s overall diameter, making them suitable alternatives. The 33×12. R20 stands out as the closest match with an overall diameter of 33. A 275/60R20 tire follows the standard sizing convention where each number represents specific dimensions. The 275 indicates the tire’s width in millimeters, while 60 represents the aspect ratio – meaning the sidewall height equals 60% of the tire’s width. The 20 designates the wheel diameter in inches.These numbers show the aspect ratio, which is the tire sidewall height in percentage to width of the tire. The width of Sidewall is directly proportional to the aspect ratio, a 70 aspect ratio means the sidewall height is 70% of 265mm while 65 aspect ratio means it is 65% of 265mm.The difference is 10 mm extra width, but if the second number on the tire spec is the same, then it is also a percentage of 10mm taller than then 265. So, if they’re both 35, then the 275 is 7 mm larger in diameter, which of course makes also 1 revolution of the tire longer.The 275/60R20 conversion is fairly simple. The first number in the tire size, 275, represents the width of the tire in millimeters. To convert this to inches, we divide 275 by 25. This gives us approximately 10.