It depends on what you drive. Keep in mind that most AT tires are heavier than all-season tires just by material composition used to make the tires. AT's normally have more ply of belts in the side wall and the circumference of the tire than the all-season tire. If you are concerned about your mileage then get the all-season because unless you plan on driving in roads that have sharp rocks or objects then the all-season should be enough. As an example a size 245/65/17 Bridgestone Dueler H/L 400 weighs 31lbs and the same brand Revo AT tire weighs 36lbs at the same size. The 5 lbs equates to a heavier wheel/tire combination at each corner of the vehicle and add 20lbs of unsprung weight.
Last edited by redorange; October 3rd, 2009 at 11:40 PM.