Lets figure out what a truck with 2000 pounds cargo capacity according to the yellow door sticker can haul.
The truck's payload (aka "cargo carrying capacity") is found on a "Tire and Loading Information" sticker on the doorjamb and reads, "The combined weight of occupants and cargo should never exceed XYZ kg or ABC lbs." We’re using 2000lbs
A common misconception is that 150 pounds is included in the doorjamb sticker; this is not the case. The entire driver's weight has to be deducted from the payload. = we will use 200lbs
Total up the weight of all of your passengers (don't forget the furry ones!). Also estimate and include the weight of infant, car and booster seats if you have little ones. We will use 150 lbs
A safe estimate is 50-100 pounds for travel trailers and 250 pounds for fifth wheels. We are using a 5er so 250lbs
In the cab, we often travel with a variety of entertainment options for the kids (iPads, iPods, games, books, magazines, dolls, toys, pillows, blankets, etc.), a GPS, couple of maps, Big Rig book and a small cooler of drinks, cold snacks and a bag of snacks separate than that. This is probably lite but we will use 50lbs
In our truck bed, you'll often find a ladder, firewood (or equivalent), fire grill, wood blocks, sewer hose holders and misc. destination needs (for instance, when going to the beach- beach chairs, boogie boards, etc.). We also have a heavy 150 pound roll top truck bed cover. For folks in travel trailers - include the topper if you have one, bikes, kayaks, etc. Again probably lite but 50lbs
You're adding approximately 700 lbs. to the truck. You have 1,300 lbs. of payload capacity. Fifth wheels typically have 20% - 25% pin weight which gives you a maximum loaded camper weight
of 5,200 - 6,500 lbs.
Most believe that the 150 driver is included so we take out the weight for the driver assuming you weight 150lbs. and that increases it to maximum loaded camper weight of 5,800 - 7,250 lbs.
You can’t stubby pencil this to figure you weights, you need to use the CC load calculator and the best one I have seen is the link below. I believe this written by a forum member and very well done. This is still a guess the best way to figure if you are within specs you need to spend the 10.00 it cost at a Cat Scale to get weighed then come back to the link below and put the numbers in.
Towing Calculator based on Truck's Payload/CCC - Towing Planner
In my class it showed me that with 11,380 lbs 5er using Cat Scale weights I was 960 lbs over GVWR and within 200 lbs of Axle and Tire Loading in Chevy 2500HD Diesel with 15,000 lbs tow capacity. Then I learned that Cat Scale Weights are static weights and during towing the pin weights can increase by 30 to 40 percent by hitting dip or braking going down hill. Here is mine figured off of Cat Scale Weights.
I know someone going to say that if your 1 pound over trucks not going to break in half and no it won't. Or use common sense in loading you truck but I believe above gives you guide line to make common sense decission.