2013 F-150, SuperCab, 3:31 E-Lock (couldn't get the 3:55), w/Reese slider, pulling older 27.5ft 5th wheel w/no slides. Took short trip to campout. Weighed everything on the way. Truck empty w/full tank is 6100lb. Truck fully loaded w/5er, both of us and "stuff" = 7780lb. Trailer axles weighed 5640lb. Total rig weighed 13,420lb. (88% of max GCWR) fully loaded w/water, bikes, chairs, etc. Payload = 1680 (listed for 1660). Tires are at 81% of max. weight rating (am thinking of switching to LT E-rated for extra safety margin). Truck didn't even know it was back there!! Take off, stopping, handling was just great. Didn't need the slider, but it was close getting into camp spot, I'm glad I sprung for it anyway. The new truck is so much easier to get into/out for both of us "Seniors", especially for my wife. Very quiet, plenty of power and stopping was really good. The truck and trailer were both level and ride didn't feel spongy at all. Truck squatted about 1.75 inches and I don't have any mods to suspension. I'm about 8% over the GVWR when fully loaded, but I think there is plenty of margin and I only tow about 2500 miles/year. I think switching to LT E-rated tires will actually raise the GVWR anyway. Empty, it handles so well I can't believe its a truck. I put a Bak-Flip cover on it and that is just great. The little kick steps on the side already have been used a lot. I calc. the trailer is about 6800 (80% of trailer axle rates) when fully loaded and we really don't take a lot of stuff. The book says it is 5650, empty. If you are thinking of a trailer, be sure to allow for significant difference between "dry weight" vs your actual weight once all your junk is in there. We love the truck.