Tongue weight should typically fall between 10%-15% of the trailer's total loaded weight. A 6,000 lb loaded trailer needs roughly 600-900 lbs of tongue weight — too little causes dangerous trailer sway, too much can exceed your vehicle's payload capacity or rear axle rating even if the total tow rating isn't exceeded.
At a glance
| Term | What it means |
|---|---|
| GVWR | Max total weight of the vehicle itself, loaded |
| Payload capacity | Max weight of cargo + passengers + tongue weight the vehicle can carry |
| Tow rating (GCWR-based) | Max weight the vehicle can tow, per manufacturer |
| Tongue weight | Downward force the trailer exerts on the hitch, typically 10%-15% of trailer weight |
What this calculator does
This tool checks a planned towing setup against your vehicle's actual capacity limits — not just the headline "maximum tow rating" figure, but the payload capacity that tongue weight eats into, and the recommended tongue-weight range for the trailer you're pulling. Many tow-rating problems aren't about exceeding the tow rating itself; they're about exceeding payload capacity because tongue weight wasn't accounted for.
The numbers that actually matter
Tow rating vs payload capacity — two different limits
A vehicle's maximum tow rating describes how much trailer weight it can pull. Its payload capacity is separate — it's how much total weight (passengers, cargo, and the trailer's tongue weight) the vehicle itself can carry without exceeding its own gross vehicle weight rating (GVWR). It's entirely possible to tow well under the maximum tow rating while still exceeding payload capacity once tongue weight, passengers, and cargo are all added up.
Tongue weight
Tongue weight is the downward force the trailer's hitch point exerts on the tow vehicle, typically recommended at 10%-15% of the trailer's total loaded weight. Too little tongue weight is a leading cause of trailer sway at speed — a genuinely dangerous handling condition. Too much tongue weight can overload the vehicle's rear axle or exceed payload capacity even when total towed weight is within the tow rating.
Worked example
| Item | Weight |
|---|---|
| Trailer, loaded | 6,000 lbs |
| Recommended tongue weight (10%-15%) | 600-900 lbs |
| Vehicle payload capacity | 1,800 lbs (example) |
| Passengers + cargo in tow vehicle | 500 lbs (example) |
| Remaining payload for tongue weight | 1,300 lbs — comfortably covers tongue weight in this example |
How to check your specific numbers
- Find your vehicle's GVWR, payload capacity, and maximum tow rating — usually on a sticker inside the driver's door jamb and in the owner's manual.
- Weigh (or estimate conservatively from receipts/specs) your loaded trailer's total weight.
- Calculate the recommended tongue weight range (10%-15% of loaded trailer weight).
- Add tongue weight to passenger and cargo weight already in the tow vehicle, and confirm the total stays under payload capacity.
- Confirm total trailer weight stays under the vehicle's maximum tow rating, remembering that hitch class and factory tow package can also cap the real-world safe limit below the advertised maximum.
Common mistakes
- Checking only the tow rating and never checking payload capacity, which is a separate and often more restrictive limit.
- Assuming an empty trailer's weight is close enough to its loaded weight — cargo, water tanks, and gear can add hundreds to thousands of pounds beyond the trailer's dry weight.
- Ignoring passenger and cargo weight already in the tow vehicle when calculating remaining payload for tongue weight.
- Ignoring the vehicle's actual factory hitch/tow package rating in favor of a generic "class" rating for aftermarket hitches, which can be lower than assumed.
Trailer sway at highway speed is a serious safety hazard most often caused by insufficient tongue weight — if a trailer starts swaying, insufficient tongue weight or an overloaded rear of the trailer is a likely cause. Always use the lower of the tow rating and the payload-capacity-derived limit — whichever number is more restrictive for your specific loaded setup is the real safe limit.
Frequently asked questions
What's the difference between tow rating and payload capacity?
How much tongue weight should my trailer have?
Can I tow within my tow rating but still be overloaded?
Why does my trailer sway at highway speed?
Where do I find my vehicle's actual towing and payload numbers?
Sources & further reading
Figures, prices and policy details were current at the last-updated date above. Automotive pricing, incentives and regulations change frequently — verify time-sensitive details with the linked primary sources. Read our editorial policy and fact-checking standards.
