Tongue weight is the downward force a loaded trailer's coupler puts on the hitch ball. For a conventional travel trailer the makers put the target at 10% to 15% of the loaded trailer weight, and Ford specifies a flat 10%. It is measured, not assumed.
Tongue Weight: How Much, How to Measure It, and What Happens When It Is Wrong
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At a glance
- Ford's 2026 towing guide requires tongue load of 10% of loaded trailer weight for conventional trailers over 2,000 lb, and no more than 200 lb for trailers up to 2,000 lb.
- Chevrolet and GM specify 10% to 15% for conventional trailers, but cap tongue weight at 10% when the truck is towing its maximum trailer weight.
- Tongue weight counts against the truck's payload and has to fit the receiver's weight-carrying or weight-distributing tongue rating as well.
- A brochure's dry hitch weight is not loaded tongue weight; the makers tell owners to weigh the trailer loaded for travel.
- Fifth wheel king pin weight is stated as 15% (Ford, Ram) up to 25% (Chevrolet, GM, Equal-i-zer) of loaded trailer weight.
On this page (9)
What tongue weight is, and what the makers specify
Chevrolet defines it plainly: the tongue weight is the downward force of the trailer's coupler on the vehicle hitch, found by placing the tongue of the trailer on an appropriate scale. Every figure below is a share of the loaded trailer weight, not the dry weight on the brochure.
The sources do not all say the same thing, so it is worth seeing who says what before settling on a target.
| Source | Conventional trailer tongue weight | What the document adds |
|---|---|---|
| Ford, 2026 RV & Trailer Towing Guide | 10% of loaded trailer weight, for trailers over 2,000 lb | For trailers up to 2,000 lb, tongue load not to exceed 200 lb |
| Chevrolet, 2026 Trailering Guide | 10% to 15% | When towing the maximum trailer weight, the maximum is 10% |
| GM, 2026 Silverado 1500 / Sierra 1500 Trailer Towing Supplement | 10% to 15% | Incorrect load balance is named as a leading cause of trailer sway |
| Ram, Towing: Before You Buy | Roughly 10% | The 2026 Ram 1500 payload and towing chart is calculated at 10% |
| Equal-i-zer, 6K to 14K owner's manual | 10% to 15% | Outside that band, increased likelihood of loss of vehicle control or equipment failure |
| Weigh Safe, True Tow weight distribution manual | 10% to 15% | Under 10% or over 15% greatly increases the likelihood of loss of control |
| CURT, round bar weight distribution instructions | 10% to 15% | Too low a tongue weight often produces a tendency to sway |
Figures quoted from the 2026 Ford RV & Trailer Towing Guide (page 7), the 2026 Chevrolet Trailering Guide (page 8), Ram's towing pages, the Equal-i-zer 6K to 14K manual, the Weigh Safe True Tow manual and CURT's instruction sheet 17051.
Tip: Chevrolet and GM both carve out exceptions. Some trailer types, boat trailers in particular, fall outside 10% to 15%, and in those cases the figure in the trailer's own owner's manual is the one to follow.
Why there is a range at all
Ford states both failure modes in one paragraph. Too much tongue load can cause suspension or drivetrain damage and press the vehicle down at the back so the front wheels lift, severely reducing traction, steering response and braking. Too little reduces rear-wheel traction and causes instability, which Ford describes as tail wagging or jackknifing.
Ram says the same in shorter form: too little tongue weight leads to trailer sway, too much negatively affects the towing dynamics of the vehicle. Equal-i-zer adds the payload consequence, that with tongue weight too high the tow vehicle's rear axle could be overloaded and the steering could go light and drift.
GM's 2026 Silverado and Sierra towing supplement puts it as a cause rather than a symptom: correct trailer load balance must be maintained for stability, and incorrect load balance is a leading cause of trailer sway. Chevrolet notes that loads sitting too far forward or too far back create unstable conditions at highway speeds and during heavy braking. General towing safety guidance is also collected on the NHTSA towing page.
Working out the target for your trailer
The arithmetic is a percentage of the loaded trailer weight. Ford prints two worked examples: a 5,000 lb conventional trailer multiplied by .10 gives a proper tongue load of 500 lb, and an 11,500 lb fifth wheel multiplied by .15 yields a king pin weight of 1,725 lb.
Airstream works its example on the loaded total, which is the part owners skip: a 2,000 lb conventional trailer loaded with 1,000 lb of cargo weighs 3,000 lb, so the proper tongue weight is 300 to 450 lb, 10% to 15% of the loaded figure. On Ford's single 10%, the same 3,000 lb trailer would target 300 lb, which is our arithmetic applied to Ford's percentage.
GM states the check as a formula: trailer tongue weight divided by total trailer weight, times 100. Weigh the loaded trailer and the tongue separately, work out the percentage, and rearrange cargo inside the trailer if the result is too high or too low.
Tip: Read what a published hitch weight includes before trusting it. Equal-i-zer warns that listed tongue or hitch weights are dry figures that usually exclude battery and propane tanks, while Airstream says the hitch weight it publishes for each travel trailer model includes LP. Neither accounts for water, food, tools, bikes or a generator.
How to measure it
Blue Ox's SwayPro manual sets the conditions: measure with the trailer fully loaded, on a level surface, with the coupler at tow height. Two documented methods get you the number.
A tongue scale under the coupler
Ford's procedure is to disconnect the trailer and place only the tongue on a scale at hitch ball height. If the reading is above the upper limit, move more of the trailer contents rearward; if it is below the lower limit, shift the load forward. Equal-i-zer's SIMPLE WEIGH mechanical tongue scale, rated to 2,100 lb of tongue weight, has its own written sequence:
- Chock the trailer.
- Position the scale under the coupler or jack, stable and aligned with the coupler size.
- Lower the trailer onto the scale with the jack until the full tongue weight is supported, keeping the jack no more than 1 inch above the ground.
- Read the figure, and do not load, unload or move cargo while the scale is carrying the tongue.
Weigh and subtract at a public scale
Weigh Safe describes the drive-on method this way:
- Drive the tow vehicle onto the scale without the trailer and record the weight.
- Connect the trailer and weigh the tow vehicle again, with the trailer's wheels off the scale.
- Subtract the first weight from the second. The difference is the tongue weight.
Tip: Weigh Safe's True Tow manual tells owners to measure tongue weight without the spring arms attached, before each connection, because the figure changes with propane and fresh water levels and with whatever else is aboard. A scale visit settles the argument that a brochure cannot.
The receiver's two ratings
A receiver has two sets of numbers, one for weight-carrying use and a higher pair for use with weight distribution. Ford's F-150 table shows the gap.
| 2026 F-150 factory receiver | Max trailer capacity | Max tongue load |
|---|---|---|
| Weight-carrying | 5,000 lb | 500 lb |
| Weight-distributing | 13,500 lb (requires Tow/Haul Package 53T and the optional Max Tow Axle) | 1,400 lb |
Figures from the 2026 Ford RV & Trailer Towing Guide, F-150 hitch receiver weight capacity table, page 19, with footnote 7.
Ram's two 2026 documents for the same truck do not agree. The 2026 Ram 1500 payload and towing chart says the maximum tongue weight for the Class IV receiver is limited to 1,100 lb, while the 2026 Ram 1500 Owner's Manual lists the Class IV 1500 hitch at 11,610 lb trailer weight and 1,161 lb tongue weight. Where documents conflict, take the lower figure and confirm it on the hitch.
Your own numbers are on the vehicle, not in any guide. Ford puts a label on the receiver giving both its weight-carrying and weight-distributing capacities, and GVWR and rear GAWR on the Safety Compliance Certification Label; Chevrolet puts a Trailering Information Label on the driver-side door jamb of the Silverado 1500, Silverado EV, Silverado HD, Suburban and Tahoe listing GVWR, GCWR, rear axle GAWR, maximum payload, maximum tongue weight and curb weight; Ram tells owners never to exceed the maximum tongue weight stamped on the fascia, bumper or trailer hitch.
Payload, the limit that usually bites first
Tongue weight is not a separate allowance. Ford defines payload as GVWR minus base curb weight, the combined weight of cargo and passengers the vehicle is designed to carry, and states that when towing, the trailer tongue load or king pin weight is also part of that cargo weight. Ram says it in one line: payload plus tongue weight cannot exceed the payload capacity.
GM frames the same arithmetic from the other end. Options, passengers, cargo and equipment reduce the maximum allowable tongue weight the vehicle can carry, which in turn reduces the maximum allowable trailer weight. Ford adds that if the added tongue load takes the truck past GVWR or rear GAWR, the answer is a larger vehicle or a smaller trailer.
How loading the trailer moves tongue weight
The axles act as a pivot. Equal-i-zer's description is that cargo ahead of the axles generally increases tongue weight and cargo behind them generally reduces it, with more leverage the farther an item sits from the axle group. Water tanks, propane, batteries, bikes and rear cargo racks are the items that move it most.
The makers' loading rules of thumb aim at the same result from slightly different reference points, so do not merge them:
- Ford: roughly 60% of the allowable cargo weight in the front half of the trailer, 40% in the rear, within the tongue load limit.
- Chevrolet: 60% over the front half and evenly side to side, when the trailer axles are centered on the trailer.
- Ram: load 60% of the weight in the front of the trailer, which places 10% of the gross trailer weight on the hitch.
- Equal-i-zer: 60% forward of the axle center line, then measure and verify the actual tongue weight.
No maker publishes a figure for how much a full fresh water tank changes tongue weight, because it depends where the tank sits relative to the axles. Equal-i-zer illustrates only the scale of the drift: a trailer at 12% at home can read 8% after the fresh tank is drained and bikes go on the rear bumper.
If the measured percentage is low, the fix is cargo position first and a weight distribution hitch for the axle loading, not one in place of the other.
Tip: A weight distribution hitch does not reduce tongue weight. Equal-i-zer says it redistributes the effect of tongue weight across the combination and does not make payload limits disappear; Airstream says such hitches do not reduce tongue weight or allow towing beyond the vehicle's capacities; Weigh Safe says the tongue weight does not change when it is distributed.
Fifth wheel and gooseneck pin weight
The equivalent figure for a fifth wheel is king pin or pin weight, and it is a bigger share. GM notes these trailers place a larger percentage of the weight on the tow vehicle than conventional trailers, which is why half-ton towing limits are usually a payload question rather than a trailer-rating one.
| Source | King pin weight |
|---|---|
| Ford, 2026 towing guide | 15% of loaded trailer weight (11,500 lb x .15 = 1,725 lb) |
| Ram, towing pages | About 15% of the total load |
| Chevrolet 2026 Trailering Guide and GM 1500 supplement | 15% to 25%; maximum 15% when towing the maximum trailer weight |
| Equal-i-zer owner's guide | Typically 20% to 25% |
Figures from the same four documents linked above. GM adds the constraint that pin weight must not take the truck past its rear GAWR or GVWR, and must stay within the maximum in that vehicle's trailering chart.
Common questions
How much tongue weight should a trailer have?
For a conventional trailer, Ford's 2026 RV & Trailer Towing Guide requires 10% of the loaded trailer weight above 2,000 lb, and not more than 200 lb for trailers up to 2,000 lb. Chevrolet, GM, Equal-i-zer, CURT and Weigh Safe all state 10% to 15% of the loaded weight, with Chevrolet capping it at 10% when the truck is towing its maximum rated trailer weight.
What is the tongue weight of a 5,000 lb trailer?
Ford's own worked example answers this: 5,000 lb multiplied by .10 gives a proper tongue load of 500 lb. Applying Chevrolet's 10% to 15% band to the same loaded weight gives 500 to 750 lb, which is our calculation from Chevrolet's percentages rather than a figure Chevrolet prints. The 5,000 lb has to be the loaded trailer weight, not the dry weight on the brochure.
Can I measure tongue weight at a truck stop scale?
Yes. Weigh Safe's drive-on method is to weigh the tow vehicle alone, then connect the trailer and weigh the tow vehicle again with the trailer's wheels kept off the scale, and subtract the first weight from the second. Ford's alternative is to disconnect the trailer and place only the tongue on a scale at hitch ball height. Either way the trailer should be loaded for travel, level, with the coupler at tow height.
Is 20 percent tongue weight too much?
For a conventional travel trailer, yes by every source cited here. Equal-i-zer and Weigh Safe both warn that going outside 10% to 15% of gross trailer weight increases the likelihood of loss of vehicle control, and Chevrolet allows only 10% when the truck is at its maximum trailer weight. For a fifth wheel or gooseneck, 20% sits inside Chevrolet's and GM's 15% to 25% band and inside Equal-i-zer's typical 20% to 25%.
What is the difference between tongue weight and towing capacity?
Towing capacity is the whole loaded weight of the trailer the truck may pull. Tongue weight is the part of that weight pressing down on the hitch, and it counts against the truck's payload rather than against the towing number. Ford's Maximum Loaded Trailer Weight figures already assume a 10% tongue load for conventional trailers or 15% king pin weight for fifth wheels, no cargo, and a 150 lb driver and passenger, with the weight of options, passengers, cargo and the hitch to be deducted.