I've had a terrible time getting to the bottom of what I can tow with my 2019 F350 I bought.

This is a 2019 F350, 6.7 Powerstroke, SRW, 4x4, 8' bed, 176" wheelbase with a 3J axle code, which I found is a 3.55. The placard says the GVWR is 10,000 lbs. I have a hitch with a 3" receiver.

So I finally found (hopefully) an authoritative answer (attached)

The way I read this, the dry weight is 7677 lbs, and the max payload is 3010 lbs, however, the tire placard says combined weight of passengers & cargo should never exceed 2108 lbs, so we'll use that for safety (let's call it 2100 for convenience). We'll also use that for the tongue weight of a 5th wheel or gooseneck, and assume 10% of the trailer weight is on the tongue

Reading this document, I arrive at a Gross Combined Weight Rating of 28,700 lbs (5th line down in the tables on p6). The maximum loaded trailer weight for conventional is 18,000 lbs, and for 5th wheel/gooseneck that figure is 20,700lbs

So, let me try some examples:
1) Me and my buddy weigh 200 lbs each. We go to the store and put (2100-400=1700)lbs of bricks in the back of the truck. This is a go, but barely.
2) Just me driving, with 1000 lbs of cement in the bed, and a 18,000 lb conventional trailer. This puts the truck at 7677 + 200 + 1000 + 1800 (tongue) = 10677lbs. That's a no-go because I've now exceeded the GVWR of the truck itself. I have to lose 677 lbs of concrete, or lighten the trailer.
3) Just me in the truck with a 21000 lb gooseneck. This is a no-go, because my 200lbs Plus the 2100 lb tongue weight of the gooseneck exceeds the cargo rating. The actual gooseneck max is 19,000 lbs (2100 max cargo-200 for me=1900lbs /10% tongue weight yields 19,000lbs) now checking GCWR that's 7677+200+19000=26877lbs which is less than the mx GCWR of 28700.
4) I have my 3 buddies, each at 200 lbs plus me. We have 200 lbs of tools in the bed. How much can I put on the gooseneck? That's 1000lbs passengers & cargo which leaves 1100 lbs of tongue weight for the trailer, meaning the trailer+ cargo can weight no more than 11,000 lbs. If my trailer empty weighs 2000lbs, that 9000 lbs. Check GCWR 7677 + 1000 + 9000 = 17677 (less than 28700)

ALSO ... if the GCWR exceeds the GVWR of the truck in any case, the trailer will have to have assisted braking , because the truck's brakes are only designed for the GVWR of the truck itself, not the truck-plus-trailer.

Did I get any of that right?

Thanks in advance for guidance/input

 

Welcome aboard! And welcome to the age old and often asked conundrum of 'what if' and how much can I carry / tow. It's such a hot topic in the RV / Camper forums that Mods and admins are now pretty much cutting off any conversation beyond, follow the placards on the door, if in doubt go across a CAT scale and extra spring Leafs, air bags and other suspension mods do nothing to increase the OEM factory GVWR or GCWR

You seem to have the basic concepts down pretty well in your calcs. I'm presuming you have the CC since you list a 176' Wheel base. The PSD is a heavier engine so it reduces our GVWR. when comparing the same truck to a gas engine equipped truck.

First, when figuring curb weight and payload, the listed payload (2108) on the door tire placard figures 150 lbs of weight for each driver / passenger position, see #2 link. Example: 6 seat belted positions = 900 lbs. If there are only two of you in the pickup that would be minus 600 lbs from that figure. (Interesting they use 150. As a Flight Engineer in my younger days, we used 180 for each person on board when figuring weight and balance sheets.) So, in your example of payload = 2100#'s, add 150#'s for each open seat belted position. So six open seats 2100+900=3000#. Note the 3010 lbs you have listed above as a Payload, seemingly contradicted by the payload on the tire placard..

The first commonly accepted piece of advice is to fill the fuel tank(s) and then go to a CAT scale and get an 'empty' weight of your truck. That would be your most accurate curb weight.
Then, go back and get your weight on your empty trailer, to include Pin Weight or bumper/hitch weight. This can get a little problematic - expensive if all you have are CAT Scales. In my area we have all sorts of logging and ag state certified scales, so unless they are in use, I have pretty much unlimited access. They leave the state scales on even when they are closed so we can use them in the off hours. I have empty weights on both pickups, weight with utility trailer, boat trailer and slide in truck camper with and without full water tanks.

Link 2 Page 12, "Cargo Weight Rating shown in chart is maximum allowable, assuming weight of a base vehicle with required camper option content and a 150-lb. passenger at each available seating position"


1. Ford Rv And Trailer Towing Guide | 2021 Ford F-150 Videos | Ford Owner Support

2 2019_Ford_RVandTrailerTowingGuide.pdf (fordpro.com)


You are on the right rack. Just don't over think it.

 

This might help as well: Trailer and RV Weight Demystified (everything-about-rving.com)