2007 1500 laramie full load towing 20ft passport 5000 lbs. Towed fine lots of power 5.7 but with 20 inch wheels payload only 1100 lbs. Truck had lt tires so I was comfortable slightly exceeding payload. Dw fell in love with 2015 Silverado LTZ and payload with 20s is 1635 lbs. with P tires. Added bonuses are better fuel mileage empty and towing and the integrated brake controller is flawless. Do miss the hemi power but the chev 5.3 has enough. Dave