Weight distribution hitch: when you need one, and what it changes
Enter the loaded trailer and its tongue weight: the calculator gives the range the makers ask for, which tells you whether you are past the bar-free tongue limits below.
Tongue weight for this trailer
750 lb to 1,125 lb
| At 10% of the trailer | 750 lb |
| At 15% of the trailer | 1,125 lb |
| Fifth wheel or gooseneck (pin weight) | 1,125 lb to 1,875 lb |
Compiled by Radif Partners · Sources and method · makers’ towing documents read October 20 to 21, 2026
A weight distribution hitch uses spring bars between the trailer frame and the hitch head to lever part of the tongue load forward onto the truck's front axle and back onto the trailer's axles. The makers make it mandatory above set limits. Ford allows the F-150 receiver 5,000 lb of trailer and 500 lb of tongue as a plain weight-carrying hitch, and 13,500 lb and 1,400 lb with the bars. Chevrolet allows a Tahoe 5,000 lb and 600 lb without bars, and requires a weight-distributing hitch with sway control beyond that. Ford requires one on the Expedition for any rating over 7,000 lb. The bars restore steering grip and braking balance by putting weight back on the front wheels. They do not create payload: the full tongue weight, plus the extra weight of the hitch itself, still counts against what the truck may carry, and the GVWR and GCWR stay the same.
Limits with and without bars
Each figure pair is trailer weight and tongue weight for the vehicle's standard receiver, as the maker prints it. The weight-carrying column is the ceiling for a ball mount alone; where the maker prints a higher second figure, reaching it requires load-leveling bars.
| Vehicle | Weight-carrying (trailer / tongue) | Weight-distributing (trailer / tongue) | Where |
|---|---|---|---|
| Ford F-150 | 5,000 lb / 500 lb | 13,500 lb / 1,400 lb | Ford guide, p. 19 |
| Chevrolet Tahoe | 5,000 lb / 600 lb | full rating / up to 1,250 lb, sway control required | Chevrolet guide, p. 41 |
| Ford Expedition | 7,000 lb / 700 lb | 9,600 lb / 960 lb (standard wheelbase) | Ford guide, p. 38 |
| Ford F-250 Super Duty | 22,000 lb / 2,200 lb | 22,000 lb / 2,200 lb, 50% FALR | Ford guide, p. 26 |
| Ford Explorer | 5,000 lb / 500 lb | no separate figure | Ford guide, p. 39 |
Ram sets its threshold in its chart notes rather than per receiver: the 2024 Ram 1500 chart recommends a weight-distributing hitch for trailers over 5,000 lb. The F-250 is the exception in the table: Ford gives the Super Duty receiver the same values both ways, and when bars are used it recommends restoring 50% of the front axle load (Ford guide).
What the bars actually do
Hitch a heavy tongue to a ball mount and the truck pivots around its rear axle: the rear sinks, the nose rises, and the front tires lose part of their load. Steering and braking both depend on those front tires. The spring bars, tensioned with chains or brackets, resist that pivot. Part of the load that would have pressed on the rear axle goes to the front axle, and part goes back to the trailer's own axles. The truck sits closer to level, the headlights point where they should, and the front brakes have weight to work with.
Ford's term for the result is front axle load restoration, FALR: the share of the weight the front axle lost when the trailer was hitched that the bars give back. 50% means half of it. Measuring it takes three passes over a scale with separate axle pads: the truck alone, the truck hitched without tension on the bars, and the truck with the bars set.
What the bars do not change
The truck and trailer weigh exactly the same with or without bars. The payload still has to absorb the whole tongue weight plus the hitch hardware, and a weight-distributing head with bars weighs more than a plain ball mount. The GVWR, the axle ratings on the door label and the GCWR are unchanged. A rig that is over its payload on a ball mount is still over it with bars, just more level. The payload page shows how to count it.
Payload left with a heavy tongue
Payload left for the trailer tongue
925 lb
| Payload | 1,500 lb |
| People, cargo and hitch | 575 lb |
| Heaviest trailer at 10% tongue | 9,250 lb |
| At 12% tongue | 7,708 lb |
Sway control and setting up
Chevrolet pairs the weight-distributing hitch with sway control on the Tahoe, and many bar systems include a friction or cam device to resist the trailer yawing behind the truck. Sway control complements a correct tongue weight; it does not replace it. A trailer loaded tail-heavy, below the 10% share, can still sway with any hitch, which is why the tongue weight comes first. Set the bars with the trailer loaded as you travel, then check the front axle on a scale: a level look is not proof that the load went back where it should.
A quick way to decide
Take your trailer, for example a 7,500 lb travel trailer, and work out its tongue at 10 to 15%: 750 lb to 1,125 lb. On an F-150 or a Tahoe that is past the weight-carrying limit both in trailer and in tongue, so bars are required. On an F-250 they are optional by the maker's figures and still useful for the front axle. The hitch class page covers the receiver classes, and the SUV page the big SUVs whose ratings depend on the bars.