Just towed 10,000 lb TT thru the Ozarks. Averaged 9.1 going, 10.1 on return. Truck suspension & engine handle this with ease & comfort. Next month pulling 4000 mile trip. We'll keep you posted.Just towed my 21 ft bass boat 1200 mile round trip into the Ozarks. Averaged 14.1 towing with avg 75 on the interstate. Truck pulled real strong and the ride was great. I was very satisfied.