| Percent of Trailer Weight | Tongue Weight |
|---|
What Tongue Weight Is
Tongue weight is the downward force the loaded trailer presses onto the hitch ball. It is the single most important number for safe towing. For a conventional trailer it should be 10 to 15 percent of the total loaded trailer weight; for a fifth-wheel or gooseneck the pin weight runs higher, around 15 to 25 percent.
Why Too Little Is Dangerous
When tongue weight is too low, the trailer can begin to sway from side to side at highway speed, and that sway feeds on itself until the driver loses control. Most white-knuckle towing moments trace back to a trailer loaded too far to the rear. The fix is almost always to move cargo forward, ahead of the trailer axle.
Why Too Much Is Also a Problem
Excess tongue weight squats the rear of the tow vehicle, lightens the front wheels, and dulls steering and braking. It can also exceed your hitch or rear axle rating. The goal is the sweet spot in the middle, which this calculator marks as the ideal.
How to Measure and Adjust
Weigh the fully loaded trailer, then place a bathroom or tongue scale under the coupler at ride height. Aim to keep about 60 percent of your cargo weight ahead of the axle. Small shifts in heavy items make a surprisingly large difference in tongue weight.
Frequently Asked Questions
What percent should tongue weight be?
10 to 15 percent of loaded trailer weight for a conventional trailer, and 15 to 25 percent pin weight for a fifth-wheel or gooseneck.
How do I reduce trailer sway?
Add tongue weight by shifting cargo forward, slow down, and consider a weight-distribution hitch with sway control.
Does a weight-distribution hitch change tongue weight?
It redistributes the load across both axles of the tow vehicle for better handling, but the actual tongue weight of the trailer stays the same.