2006 Fleetwood Niagara high wall towed with a 2001 f150 Supercrew 4x4 with the 5.4L. Truck tag GVWR at 6740lbs. Trailer tag GVWR says 3770lbs. Did a rough estimate with a scale and the tongue weight comes in around 420lbs, 2 full LP tanks and 1 battery. Rear end drops about an 1.5in when hooked up. Towing with it has been very smooth with no tail wag and very little bounce.