What is tongue weight?

Tongue weight is the downward force the trailer coupler exerts on the hitch ball. It's the portion of total trailer weight transferred to the tow vehicle through the hitch. Proper tongue weight ensures stable towing.

What percentage of trailer weight should be on the tongue?

For conventional trailers, 10-15% of total Gross Trailer Weight (GTW) should be tongue weight. For travel trailers, aim for 10-15%. For boat trailers, 5-10% is typical due to hull shape. Too little causes sway; too much overloads the hitch.

How do I measure tongue weight?

Use a tongue weight scale ($25-100) at the coupler height. Or use a bathroom scale with a 2x4 lever system. At a truck stop, weigh with trailer disconnected, then measure hitch point while connected. The difference is tongue weight.

What happens if tongue weight is too high?

Excessive tongue weight (>15% GTW) overloads the rear axle, reduces steering response, lifts the front wheels slightly, and can exceed hitch capacity. This strains suspension, brakes, and tires. Redistribute cargo rearward.

⚖️ Tongue Weight Calculator

Calculate the proper tongue weight for your trailer. Ensure safe, stable towing with correct weight distribution.

📊 Weight Analysis ⚠️ Safety Check 💡 Adjustment Tips

⚖️ Calculate Tongue Weight

Trailer Type

Gross Trailer Weight (Loaded)

lbs

Actual/Measured Tongue Weight (optional)

lbs

Hitch Tongue Weight Capacity

lbs

Ideal Tongue Weight Range

500-750 lbs

Target Percentage 10-15%

Minimum Tongue 0 lbs

Maximum Tongue 0 lbs

Hitch Capacity --

📐 How We Calculate

$$TongueWeight = GTW \times TargetPercent$$

GTW = Gross Trailer Weight (loaded)
Utility/Cargo: 10-15% of GTW
Travel/RV: 10-15% of GTW
Boat: 5-10% of GTW

Understanding Tongue Weight

Tongue weight is one of the most critical factors for safe towing. It's the downward force your loaded trailer exerts on the hitch ball—essentially how much of the trailer's weight is transferred to your tow vehicle. Getting this right means stable, controlled towing; getting it wrong can be dangerous.

Ideal Tongue Weight by Trailer Type

Trailer Type	Target %	Example (5,000 lb trailer)
Utility / Flatbed	10-15%	500-750 lbs
Travel Trailer / RV	10-15%	500-750 lbs
Enclosed Cargo	10-15%	500-750 lbs
Boat Trailer	5-10%	250-500 lbs
Horse/Livestock	10-15%	500-750 lbs

⚠️

Too Light (<10%)< /h4>
Causes trailer sway, fishtailing, loss of control. The trailer can oscillate and "wag" the tow vehicle. Extremely dangerous at highway speeds.

✅

Just Right (10-15%)

Stable towing, good steering response, proper weight distribution. Trailer tracks straight behind the tow vehicle. Optimal braking performance.

⚠️

Too Heavy (>15%)

Overloads rear axle, lifts front end, reduces steering and braking. Can exceed hitch capacity and damage suspension components.

📝 Example: Travel Trailer Setup

1 Loaded trailer weighs 6,000 lbs (GTW)

2 Target: 10-15% = 600-900 lbs tongue weight

3 Measured tongue weight: 550 lbs (too low!)

4 Solution: Move cooler, gear forward of axle

5 Re-measured: 720 lbs (12% - perfect!)

How to Measure Tongue Weight

Tongue weight scale: The most accurate method. Place the trailer coupler on a specialized scale at towing height ($25-100).

Bathroom scale method: Use a bathroom scale with a level pipe or 2x4 as a lever. Apply the lever ratio to calculate actual weight.

Truck stop scales: Weigh your vehicle with trailer disconnected, then with trailer connected but wheels on ground. The difference is tongue weight.

"The 60/40 rule: load 60% of your cargo weight in front of the trailer axle and 40% behind. This naturally creates proper tongue weight for most trailer designs."

Frequently Asked Questions

❓ Frequently Asked Questions

Tongue weight is the downward force the trailer coupler exerts on the hitch ball. It's the portion of total trailer weight that gets transferred to the tow vehicle through the hitch connection. Proper tongue weight is essential for stable, safe towing without sway or handling problems.

For most conventional trailers, 10-15% of total Gross Trailer Weight (GTW) should be tongue weight. Travel trailers and cargo trailers typically need 10-15%. Boat trailers are different due to hull shape—aim for 5-10%. Too little causes dangerous sway; too much overloads the hitch and rear axle.

Use a dedicated tongue weight scale ($25-100) placed at proper coupler height for the most accurate reading. Alternatively, use a bathroom scale with a 2x4 lever system (apply the lever ratio). At truck stops, weigh with trailer disconnected, then measure at the hitch point while connected—the difference is tongue weight.

Tongue weight below 10% of GTW causes dangerous trailer sway—oscillation that can lead to loss of control or jackknifing. The trailer "wags the dog," especially at highway speeds or when passed by large trucks. Fix this by shifting cargo forward to increase tongue weight.

Excessive tongue weight exceeding 15% of GTW overloads the tow vehicle's rear axle, reduces steering response, can lift the front wheels slightly, and may exceed hitch capacity. This strains suspension components, brakes, and tires. Redistribute cargo rearward to reduce tongue weight.