In all of the inch to metric tire sizing charts I can find it shows a 90/90 to be the equivalent to a 2.75/3.00 tire. BUT, the first 90 in 90/90 is supposed to be the width in millimeters, and the second the aspect ratio. Well, to get inches, divide millimeters by 25.4 so a 90/90 should be 90 divided by 25.4, or 3.54 inches. How in the world does this even come close to a 2.75/3.00 size? A 3.00 inch tire in my thinking should be 76.2 millimeters. What gives?