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Tires/Tires Sizes


steve kendro wrote at 2007-11-06 18:09:39

you seem to be confused on tire sizing - the 285 is the section width in millimeters at the widest section of the infalted tire. the 75 is the aspect ratio as a percent. the aspect ratio is the tire wall hieght from the shoulder to the lip. on the tire example we are using, the tire height is 75% of 285mm or 213.75 mm high. hope this helps.


trimman wrote at 2014-11-24 21:09:15
i have a 2009 gmc 2500 diesel with 265/70r 17 E  put a leavling kit on it whent to a 285/70 17 E tire and the drivers tire rubs and lost 2 mpg going back to the 265


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