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Towing Capacity Calculator

Calculate max towing capacity from GCWR and vehicle weight.

Last updated: June 13, 2026

Calculator

GCWR (Gross Combined Weight Rating)

lbs

Vehicle Curb Weight

lbs

Passengers & Cargo

lbs

Results

Max Towing Capacity9,100 lbs

Tongue Weight (10-15%)1,092 lbs

Total Vehicle + Trailer15,000 lbs

Cannot exceed GCWR

Safety TipStay 10-20% under max for safe highway towing

How to Use This Calculator

1Enter your vehicle's GCWR from the manual.
2Enter the curb weight.
3Enter the weight of passengers and cargo.
4View your maximum safe towing capacity.

Formula Explanation

Maximum towing capacity is calculated by subtracting your loaded vehicle weight from the Gross Combined Weight Rating.

Max Tow = GCWR - Curb Weight - Passengers & Cargo

Variables:

GCWRGross Combined Weight Rating from manufacturer

Curb WeightVehicle weight without passengers or cargo

Passengers & CargoWeight of all people and items in the vehicle

Worked Examples

GCWR 15,000 lbs, Curb 5,500 lbs, 400 lbs cargo

1. Max Tow = 15,000 - 5,500 - 400 = 9,100 lbs

Result: Maximum towing: 9,100 lbs

Why Use This Calculator

Know your exact safe towing limit.
Accounts for actual passenger and cargo load.
Includes tongue weight guidelines for safe towing.
Prevents dangerous overloading.

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Tips & Best Practices

Find GCWR on your door placard or owner's manual.
Stay 10-20% under your max for a safety margin on highways.
Tongue weight should be 10-15% of trailer weight for stability.

Common Mistakes to Avoid

❌ Using the max tow rating without subtracting cargo weight.

✅ Always subtract your actual cargo and passenger weight from GCWR to get true towing capacity.

❌ Ignoring tongue weight.

✅ Proper tongue weight (10-15% of trailer weight) prevents dangerous trailer sway.

Frequently Asked Questions

Where do I find my GCWR?

Check the sticker on your driver's door jamb, your owner's manual, or search your specific make/model/year online. It varies by engine and axle ratio options.

Can I exceed my towing capacity occasionally?

No. Exceeding GCWR is dangerous and illegal in many jurisdictions. It stresses the frame, brakes, transmission, and tires beyond design limits.

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Disclaimer: This calculator is provided for informational and educational purposes only. Results are estimates and should not be used as a substitute for professional advice. RediCalc.com makes no guarantees regarding the accuracy, completeness, or suitability of any calculations. Always consult a qualified professional before making financial, health, construction, or other important decisions.

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