My Screw long bed / max tow has a payload of 1,865 - maybe you have a higher trim with the moonroof and possibly tailgate step?

It seems like FX4, Tailgate step and moonroof are top contenders for lowering payload

 

Just looked at mine and it says 1634 for all passengers and cargo.

 

Lariat 502A, FX4, tailgate step, but no moonroof.
Other possible culprits on mine are power deploying running boards (heavier than standard factory boards), 36 gallon fuel tank (13 additional gallons of weight), and box side steps (probably don't weigh much).

Mine has a 7050# GVWR package. I honestly have no inkling if that is higher, lower, or the normal GVWR. I don't know why they put that on the sticker.
Edit: I just looked at Ford.com for cargo capacity of the 2018. Mine 17 is the lightweight per the available options....you can get up to 570# more cargo capacity in my configuration. Choices were 7050, 7600, 7620.

 

7050 is the 'regular' configuration that you're most likely to find on the lot. Mine is the same 7050#. But with many fewer options, my carrying capacity is 2112#.

the reason the GVWR is listed is because it is the basis for the "cargo carrying capacity' (payload)

The payload rating is derived from the GVWR minus the curb weight of the truck. So, that means the weight put to the ground by the 4 truck tires must not exceed GVWR. If you go to a scale, you don't weigh all the crap in the truck. You weigh the truck and it checks front axle and rear axle. Add them up and that's your GVW (gross vehicle weight) so you can check that against the rating.

There are also GAWR or axle weight ratings which are the amount put down by the front tires or rear tires. Note; the front and rear GAWR do not add up to the GVWR. This is where a WDH comes in to balance the truck load when adding a trailer. By the same token, the tires themselves have weight ratings at certain pressures and typically this should add up to more than the GAWR.

There's also the GCWR which is the combined weight of truck and trailer. This is the maximum weight that the truck and trailer are to put down to the ground.

for proper, safe, legal towing. ALL RATINGS MUST BE ADHERED TO

 

Good info and that all makes sense.

As far as all the ratings you must consider, I see why I notice so many towing weight questions. I've never carried so much or towed so much that it was ever a concern, but I"m sure it's a bit to digest when someone is looking to hook up a big heavy trailer.

 

If someone is wanting to make sure they are inside their ratings. Then there is A LOT of stuff to look into. And almost always a visit to some scales. Then usually some adjustment and back on the scales.

It can be very overwhelming. Especially when someone comes here with a towing question the day after they bought a fancy $50k, 10k# trailer and want to tow it with their highly optioned $60k+ Platinum truck.....There's over $100k and it's not 'compatible'

and worse when the truck salesman says "sure, a 10k pound trailer is fine." and the trailer salesman says "yeah, easily half-ton towable"

 

LOL....that happened to my neighbor. He had a diesel F250, went and bought a huge trailer, then had to go buy a F350 dually to pull it.
He said the trailer place told him his truck would be just fine. Their first trip out the truck broke down and apparently they were way over the weight limit of it. On the positive side of things, he got to justify a new truck to his wife.

 

My '17 is a XLT w/tailgate step and the 2 numbers are 7000 and 1778.

The size of the fuel tank is included in the numbers from Ford (& I suppose everyone else) for the GVWR.

 

The confusing part is why does Ford have so many different GVWR numbers to begin with? Mine is a XLT truck and has a 7,350 GVWR. Some other guys have different GVWR numbers, which ultimately screws them on payload. It makes no sense.

Bottom line is that a truck the size of a Supercrew F150 should have a far higher payload capacity. I had a 2003 Ranger, which was a tiny truck, that had 1,100 lbs. of payload. Some of these F150s are worthless. It's sad.

 

because there's too many options. There's 3 bed lengths, 3 cab sizes, 4+ engine choices, 3 tow packages, 2 payload packages, and 3+ axle ratios, and sometimes 2+ transmission choices. Not to mention countless OEM wheel/tire choices

a 3.7L NA w/3.31 gears can't tow/haul near as much as a 3.5EB with 3.73 gears.


and if someone buys a SCREW F150 to haul themselves, spouse, 2 young kids. No towing ever...then 1000# payload would suit them just fine.

The choice is out there. If someone buys a truck with too low of a payload for their situation, that's on them. It was worse about 10yrs ago when there was no little yellow sticker by the door. Just the white one, not giving you any info. on how close to the GVWR the empty truck is.