Payload is how much weight a vehicle may carry in its cab and bed. Towing capacity is how heavy a trailer it may pull. They are separate limits, and with a loaded cab and bed the payload limit can be reached before the tow rating, because a trailer's tongue weight presses down on the truck and counts as part of the load it carries.
Key takeaways
- The Tire and Loading Information placard states a single figure for the combined weight of all occupants and cargo; federal rules require that wording on vehicles with a GVWR of 10,000 lb or less, other than motorcycles and trailers.
- The certification label shows the gross vehicle weight rating (GVWR) and the gross axle weight rating (GAWR) for each axle. The combined truck-plus-trailer rating (GCWR) is not among its required items.
- Tongue weight, the downward force a trailer puts on the hitch, is counted against the truck's load limit; Ford's guide sets it at 10% of the loaded weight for a conventional trailer over 2,000 lb.
- In the illustrative example below, a truck with a 9,500 lb tow rating runs out of payload with a trailer of about 8,500 lb.
- Ford says its ratings are calculated with the SAE J2807 method, except for cutaway and chassis cab models; whichever method a maker uses, the figure that applies is the one for your truck's exact configuration.
Two labels, two different jobs
Two stickers sit near the driver's door, and they are easy to confuse. Federal Motor Vehicle Safety Standard No. 110 requires the Tire and Loading Information placard on vehicles with a GVWR of 10,000 pounds or less (motorcycles excepted). Its default location is the driver's side B-pillar, with fallback positions if that spot cannot hold a legible label (49 CFR 571.110, S2 and S4.3).
The certification label comes from a different regulation, 49 CFR 567.4. It goes on the hinge pillar, door-latch post or the door edge that meets the latch post, next to the driver's seat; if none of those works, it goes on the left side of the instrument panel or the inside face of the driver's door. It must be permanently affixed. Vehicles built in two or more stages, such as many upfitted chassis cabs, are labeled under a different section. Many vehicles show both labels in the same area, but they answer different questions.
| Label | What it must show | What it tells you |
|---|---|---|
| Tire and Loading Information placard (571.110) | Vehicle capacity weight, designated seating capacity, recommended cold tire pressures, tire sizes, and the words "See Owner's Manual for Additional Information" | How much occupants and cargo may weigh, and what tires and pressures go with that load |
| Certification label (567.4) | Manufacturer, month and year of manufacture, GVWR, GAWR for each axle, a conformity statement, VIN, vehicle type; on trucks and other non-passenger-car vehicles, the tire size, rim and cold pressure that go with each GAWR | The maximum weight of the fully loaded vehicle and of each axle, and the tires those ratings depend on |
Neither list includes a towing or combined rating. The rule text for the certification label lists the required statements in paragraph (g), and a gross combined weight rating is not among them; the tire and rim line comes from FMVSS 110 (571.110, S4.3.3).
What the placard figure includes
The standard prescribes the wording of the load statement:
"The combined weight of occupants and cargo should never exceed XXX kilograms or XXX pounds"
(49 CFR 571.110, S4.3(a)). The blanks hold the vehicle's own numbers. The same section defines vehicle capacity weight as the rated cargo and luggage load plus 68 kilograms (about 150 pounds) times the designated seating capacity. That allowance is how the number is built, not a deduction already made: when loading, subtract the real weight of every person aboard, any accessories added after the vehicle was built, and any tongue weight. With a 1,500 lb placard and a 200 lb driver alone, 1,300 lb remains for cargo.
Owner's manuals show how to use the number. A Ram heavy-duty manual page, for example, takes a 1,400 lb limit, subtracts five 150 lb occupants, and leaves 650 lb for cargo and luggage. The same page says trailer tongue weight counts toward the combined limit along with occupants and cargo (Ram 2500/3500 owner's manual, 2022). Hyundai's 2026 manual says the same about tongue load and calls the figure the maximum combined weight of occupants and cargo (Hyundai owner's manual, loading information label).
How payload relates to GVWR
Ford's towing guide describes payload as the combined maximum weight of cargo and passengers the vehicle is designed to carry, equal to GVWR minus base curb weight. It also states that optional equipment is part of the cargo weight, and that Ford's maximum payload varies with accessories and configuration, so the label on the specific vehicle governs (Ford 2024 RV and Trailer Towing Guide, Canadian edition). That is why two trucks of the same model name can show different placard numbers.
The GVWR printed on the certification label is a floor-based number: the rule says it may not be less than the sum of the unloaded vehicle weight, the rated cargo load, and 150 pounds times the number of designated seating positions (49 CFR 567.4(g)(3)). The rule sets that minimum; the manufacturer chooses the final rating.
Where GCWR comes from
Gross combined weight rating (GCWR) is the maximum allowable weight of the loaded tow vehicle and its loaded trailer together. For Ford, GCWR appears in the towing selector charts or the owner's manual, not on the certification label; the guide says gross combination weight must not exceed GCWR and points to those two places for it (Ford towing guide, About Weights). Other makers publish theirs in the owner's manual or a towing guide as well, and the location varies by brand and year.
What a tow rating assumes
A maximum trailer weight is calculated for a specific, lightly loaded truck. Ford's chart notes say its Maximum Loaded Trailer Weight assumes a tow vehicle with mandatory options only, no cargo, a 10% tongue load for a conventional trailer (15% king pin weight for a fifth-wheel), and a 150 lb driver and a 150 lb passenger. Weight of additional options, passengers, cargo and the hitch must be deducted from it. In other words, the headline tow rating is a ceiling that real loading lowers.
SAE J2807 and comparable ratings
SAE J2807 is a testing standard that defines procedures and requirements for determining GCWR and calculating trailer weight rating (TWR). Ford describes it as setting minimum performance conditions so similar vehicles can be compared, and says Ford applies it to all of its vehicles (Ford towing guide, SAE Towing Standard). For other brands, check whether the maker's own towing guide or manual names J2807 for the rating in question. Ford's charts mark such figures as "Calculated with SAE J2807 method" and note that its cutaway and chassis cab models are the exception.
How tongue weight eats payload
Tongue weight is part of the trailer's weight, yet it sits on the truck's hitch, so it uses payload and loads the rear axle. Ford's guide gives three cases: for trailers up to 2,000 lb, tongue load should not exceed 200 lb; for conventional trailers over 2,000 lb, it is 10% of loaded trailer weight; for fifth-wheel trailers, king pin weight is 15%. For Ford factory-installed hitch receivers, the guide points to a separate tongue-load chart. It adds that vehicle payload must accommodate that load along with passengers and cargo, and that the additions cannot push the truck past rear GAWR or GVWR. Other makers' manuals may state their own figures. For a conventional trailer over 2,000 lb, the relationship is:
tongue = trailer_weight x 0.10
load_used = occupants + cargo + hitch + tongue
payload_left = placard_limit - load_used
max_trailer_by_payload = (placard_limit - occupants - cargo - hitch) / 0.10
GVW = curb_weight + load_used
GCW = curb_weight + occupants + cargo + hitch + trailer_weight
- tongue: downward force of the trailer on the hitch; 10% is the figure in Ford's guide for a conventional trailer, and the real value should be measured.
- load_used: everything counted against the placard limit.
- GVW: actual weight of the loaded truck, which must stay at or below GVWR.
- GCW: what truck and loaded trailer weigh together on a scale, which is how Ford's guide defines it; it must stay at or below GCWR. GVW measured with the trailer hitched already includes the tongue weight, so adding the whole trailer weight to that GVW would count the tongue twice.
Illustrative example (invented round numbers, not a real vehicle): placard limit 1,500 lb; GVWR 7,100 lb; curb weight 5,600 lb; GCWR 17,000 lb; tow rating 9,500 lb. Two adults weigh 180 and 160 lb (340 lb), the cab and bed hold 250 lb of cargo, and a hitch adds 60 lb. The figures below were calculated with a short script.
| Item | 8,000 lb trailer | 9,000 lb trailer |
|---|---|---|
| Tongue weight at 10% | 800 lb | 900 lb |
| Load used (340 + 250 + 60 + tongue) | 1,450 lb | 1,550 lb |
| Payload left vs 1,500 lb | 50 lb | -50 lb (over) |
| GVW vs 7,100 lb GVWR | 7,050 lb (50 lb under) | 7,150 lb (50 lb over) |
| GCW vs 17,000 lb GCWR | 14,250 lb (2,750 lb under) | 15,250 lb (1,750 lb under) |
| Within 9,500 lb tow rating? | Yes | Yes |
The 9,000 lb trailer passes the tow rating and the GCWR check yet overloads the truck by 50 lb. Solving the payload formula gives (1,500 - 340 - 250 - 60) / 0.10 = 8,500 lb, so payload, not the 9,500 lb rating, caps this truck at about 8,500 lb. The 10% tongue figure and every other input are assumptions; rear-axle loading (GAWR) would need its own check and is not modeled here. A heavier load of passengers or cargo lowers the ceiling further.
Frequently asked questions
Do trailers have their own labels?
Yes. The certification label for a trailer goes on the forward half of the left side, where it can be read from outside (49 CFR 567.4(d)). Trailers with a GVWR of 10,000 lb or less also carry a tire placard near that label, with a cargo statement worded "The weight of cargo should never exceed XXX kilograms or XXX pounds" (571.110, S4.3.5).
Why does my truck's sticker differ from the same model's brochure number?
Ford's guide notes that maximum payload varies with accessories and vehicle configuration and directs readers to the doorjamb label for the carrying capacity of a specific vehicle. Brochure maximums describe a particular properly equipped configuration, not every truck sold under that name.
How is real tongue weight measured?
Ford's guide describes disconnecting the trailer and placing only the tongue on a commercial scale at hitch-ball height, then comparing the reading with the guide's tongue-load limits. It also suggests weighing the loaded vehicle and trailer on a scale to find actual axle weights, rather than relying on estimates.
Does the placard rule apply to heavy-duty trucks over 10,000 lb GVWR?
The standard's application section covers vehicles with a GVWR of 4,536 kilograms (10,000 pounds) or less. Heavier trucks fall outside that standard, so their load limits come from the certification label and the manufacturer's documentation.
Is the maximum trailer weight the same as GCWR minus the truck's weight?
Only for the lightly loaded truck the rating assumes. Ford bases its maximum loaded trailer weight on a minimum tow-vehicle weight: mandatory options only, no cargo, and two 150 lb occupants. Once options, people, cargo and a hitch are added, the trailer allowed under GCWR shrinks by the same amount, and payload or rear GAWR can cap it lower still, as in the example above.
A check before you hook up
- Read the placard figure, the GVWR and each GAWR from the door-jamb labels, and find GCWR in the owner's manual or towing guide for your model year and configuration.
- Get the trailer's loaded weight and measure its tongue weight on a scale if possible; otherwise use the manufacturer's stated figure.
- Add occupants, cargo, hitch hardware and tongue weight, and compare the total with the placard figure.
- Weigh the loaded truck and trailer on a public scale and compare with GVWR, each GAWR and GCWR.
- If any total is over, reduce cargo or trailer weight before driving. This is general education, not an engineering or legal determination; follow the maker's manual for your vehicle.
Sources
- 49 CFR 571.110, Tire selection and rims and motor home/recreation vehicle trailer load carrying capacity information (eCFR)
- 49 CFR 567.4, Requirements for manufacturers of motor vehicles (eCFR)
- Ford 2024 RV and Trailer Towing Guide (Canadian edition)
- Ram 2500/3500 owner's manual, Tire and Loading Information Placard (2022)
- Hyundai owner's manual, The Loading Information Label (2026)
