What do the numbers mean for the tire sizes?
A. tire size: 130/90/16 The first set of numbers(130), is your section width (overall tire width) The second set of numbers(90), is the aspect ratio. It’s just a percentage of the tire’s width, in this case 90%. 130 x .90 = 117, so the tire is 130mm wide and 117mm tall from the rim to the highest point of the tread The third number(16), is the size (diameter) of the wheel the tire is made to fit Q. What size rim do I need to mount a 180 tire? A. This question comes up so often it ought to be posted on the top of the page…. 3″ rim – 130 (MT90), maybe a 140 3.5″ rim – 150 4″ rim – 160 4.5″ rim – 170 5″ rim – 180 5.5″-6″ rim – 180-200 7″-8″ rim – 230 9″ rim – 250 These are maximum recommended tire sizes for a given rim width. Now before the arguments start, these recommendations come from the TIRE manufacturers, NOT motorcycle manufacturers. Q.
