My '02 3500 weighs 9,600 lbs and my axle triple Travel Supreme 5er weighs 16,800 for total 26,400 lbs. I get 13. 5MPG empty and about 9. 8MPG towing. Truck sounds real sweet under full load. I don't have my weight tickets w/ me on each axle, but I'm not exceding axle ratings.
Wiredawg