As I wait for my order - 2022 Screw XLT 4x4 Max Tow 6.5 Bed, I went to the truck scale with the travel trailer to get a rough idea of the baseline, that being my exisiting tow vehicle, a 2007 Screw 5.4 Triton 4x2. Trailer is a 2020 Rockwood Mini Lite 2506. In both cases my wife and I were in the cab, and there were a few tools in the bed, but nothing else. Trailer had full propane tanks (2) and two batteries, all of which is on the tongue. Trailer has been winterized, so no water was on board. Truck had approx 3/4 tank of fuel in both cases.

First up was the 2007 F150 and trailer connected:
Steer Axle 3080
Drive Axle 3340
Trailer Axle 5020
Total 11440

I went back minus the trailer (only the truck):
Steer Axle 3140
Drive Axle 2560
Total 5700

On to the math!
If I take the GCVW, and subtract the weight of the truck, I arrive at a trailer weight of 5740. Further, if I subtract the trailer axle weight, I arrive at a tongue weight of 720. The door card of the truck shows a payload of 1722. Not bad for a 2007, eh? If we subtract from that the trailer tongue, the W/D hitch (~100) and ourselves, I arrive at 590 pounds of additional carrying capacity, which would be the dog, more camping equipment/tools, and sometimes a 100 pound generator. When selecting a trailer, knowing we had an older truck, we wanted to be within the limits of said truck, and we are, with a little room to spare.

The forthcoming new truck is an XLT with Max Tow, so I know we will be well within all the limits for payload and trailer weight. In fact, I'm expecting the payload to be in the 1900 range on the new truck. We shall see. The interesting part in all of this is that the published weights per Forest River (trailer mfg) is 644 tongue and 4510 axle for our model. I'll go ahead and say the quiet part out loud: They Lie. Now maybe they weigh these things minus batteries and empty propane tanks, but neither of those accounts for the 500 pound trailer axle discrepancy. We don't have much in the trailer while it's stored for the winter, so I don't know where that weight would come from.

I hope this is helpful information for people trying to determine their functional payloads after the trailer is attached, or to ensure the trailers they are considering are within the capabilities of their truck. And well, the new F150s are darn capable, from what I can tell.

 

The posted trailer info is always from the most basic and lowest trim version.
Just like Trucks and payloads they claim the highest # but how many actually have it.

 

I'd bet you'll be close to 1900# payload on that new truck as well. Congrats, if I had one redo, I'd ordered the 6.5 bed for more stability. I have less trailer than you so I'm fine, even with my lower 1760 payload. I've heard often that trailer numbers are light. Seems it is not regulated as closely as the auto market. I've never weighed my setup, at 21', no slides, I'd guess I'm in the maybe 5k range, what hurts is I put often put 3 large totes of firewood in front door, probably 300#s that mostly transfers to tongue weight.

 

RV trailer weights listed are the trailer empty from the factory. There is the rare maker that includes the battery or filled propane tanks in their totals. I don’t think the factory options are always included. Closest you’ll be to factory listed weight is taking it home from the dealer and you’ll need to add the propane and battery weights. Once packed for camping with or without fresh water in the tank, you’ll have a significant overall and tongue weight gain.
Hence, why it’s a great idea to visit the scales

 

On you new truck, watch your rear axle weights. If you don't set the weight distribution hitch correctly you can easily go over your max rear axle weights.

 

Agreed with the above, in my case very easy to exceed either gvwr or resr axle. Here are my numbers


in each column red is the Cat weights, black is calculated from the red numbers. Truck gvwr is 7050 and rear axle is 4050

 

I planned on cat scaling last weekend, and estimate that between the u haul trailer and its load was pulling probably just under 6,000lbs. My 5.0 has 3.31 gears.
Next time, I'll do it.

 

It’s great knowing your truck’s normal curb weight, which includes your added carried items.
Then you can subtract that from your GVWR to know what your remaining Load Capacity is, which will be less than the yellow sticker amount.
And after you’ve determined your GCWR, you can subtract that scaled truck weight to determine your true remaining Tow Capacity.
For me, that means 8900# vice the Tow Guide’s 9100# for Tow Capacity. Not much, but still a 200# difference.