Understanding your trailer’s payload capacity is crucial for safe and efficient hauling. Overloading a trailer can cause damage to your equipment, increase the risk of accidents, and lead to costly fines. Fortunately, determining your trailer’s payload capacity is straightforward once you know the right steps. In this guide, we’ll explain how to calculate payload capacity, provide a detailed example, and share essential tips for smarter hauling.
What Is Payload Capacity?
Payload capacity refers to the maximum weight a trailer can safely carry, excluding its own weight. This includes the weight of cargo, equipment, and any additional gear loaded onto the trailer. Exceeding this capacity can compromise your trailer’s safety and durability.
The formula is simple: Payload Capacity = Gross Vehicle Weight Rating (GVWR) – Trailer Weight
Key Terms to Know
- Gross Vehicle Weight Rating (GVWR):
- The maximum weight your trailer can handle, including its own weight and the payload.
- Found on the trailer’s VIN plate or manufacturer documentation.
- Trailer Weight (Curb Weight):
- The empty weight of the trailer, provided by the manufacturer.
- Gross Axle Weight Rating (GAWR):
- The maximum weight each axle can support.
- Tongue Weight:
- The portion of the trailer’s weight that presses on the hitch, usually 10-15% of the total loaded trailer weight.
Step-by-Step Guide to Calculating Payload Capacity
Step 1: Find the GVWR
Locate the GVWR on the trailer’s data plate or in the owner’s manual. For example, a 12K Car Hauler may have a GVWR of 12,000 lbs.
Step 2: Determine the Trailer’s Weight
Identify the trailer’s curb weight (its weight when empty). In this example, let’s assume the trailer weighs 2,400 lbs.
Step 3: Subtract the Trailer Weight from the GVWR
Apply the formula:
Payload Capacity = GVWR – Trailer Weight
For this example:
12,000 lbs (GVWR) – 2,400 lbs (Trailer Weight) = 9,600 lbs Payload Capacity
Example: Hauling Equipment with a 12K Car Hauler
Suppose you want to load a compact tractor weighing 5,000 lbs and an attachment weighing 3,000 lbs onto your trailer.
- Calculate Total Cargo Weight:
5,000 lbs (Tractor) + 3,000 lbs (Attachment) = 8,000 lbs Total Cargo Weight - Verify the Payload Capacity:
Subtract the cargo weight from the payload capacity:
9,600 lbs (Payload Capacity) – 8,000 lbs (Cargo Weight) = 1,600 lbs Remaining Capacity
Tips for Safe and Efficient Hauling
- Distribute the Load Evenly:
Avoid overloading one axle by ensuring weight is balanced across the trailer. - Check the Tongue Weight:
Keep the tongue weight between 10-15% of the loaded trailer weight to improve control and stability. - Include Additional Gear:
Factor in the weight of tie-down straps, toolboxes, ramps, or other accessories. - Inspect Axles and Tires:
Ensure your axles and tires are rated to handle the total weight, including the cargo and trailer. - Follow GAWR Limits:
Do not exceed the weight capacity of your axles to prevent damage or unsafe conditions.
Why Payload Capacity Matters
Knowing your trailer’s payload capacity isn’t just about following the rules—it’s about protecting your investment and ensuring your safety. Overloading can damage your axles, tires, and trailer frame, leading to costly repairs. It can also compromise your towing vehicle’s performance and handling.
With Tomahawk Trailers, you can count on a product that’s built tough and built to last. Our trailers feature:
- Heavy-Duty Gauge Steel for superior strength.
- Dexter Rockwell Axles for reliable performance.
- 100% Welded Frames for maximum durability.
Every Tomahawk Trailer is NATM Certified, meaning it meets or exceeds the highest safety standards in the industry.
The Tomahawk Edge™ Advantage
At Tomahawk Trailers, we take pride in crafting trailers that deliver exceptional performance and durability. With our No Shortcut Trailer Design™, you get a product that’s designed to handle the toughest hauling jobs while keeping safety a top priority.
Ready to Haul Smarter?
Whether you’re transporting equipment, vehicles, or cargo, understanding your trailer’s payload capacity ensures every haul is safe and efficient. With a Tomahawk Trailer, you’ll have the confidence to handle any job.
📍 Visit us: 6109 US-167, Sheridan, AR
📞 Call us: (870) 917-2111
