Hi 4by4th,
Sorry for the delayed reply I have been out of town. I didn't have a gps at the time so I couldn't measure the actual distance travelled to get real world mpg and I also didn't account for the tire size difference in my calculations because I didn't know how to do it and I had already put over 2000 miles on the tires and I was worried about not being able to exchange them. Maybe, if I had figured out how to do the math I wouldn't have returned them but I really didn't want to regret paying over $700 for tires that I really didn't like that much. If I did the math right, a 5-7% difference that you mentinoned should only drop the milage by .9-1.26 mpg and the drop was much more signifigant then that when I divided my miles shown on odometer A by the gallons I put in my tank. I don't know, I wished it would have worked out but I may try them again when I have to purchase tires next time. I just can't afford to have bad gas milage and a car payment at the same time. By the way, I took my truck up to Huerfano Trail in Southern Colorado yesterday with my Revo's and didn't have hardly any slipping sliding but I did turn around once the snow was a between 6-8 inches deep because I was alone, it was 25 degrees outside with the wind howling, and I didn't want to end up like the poor folks who keep getting stuck in Oregon. Better to be safe then sorry.