How to Calculate the Towing Capacity
Understanding your vehicle's towing capacity is crucial for safe and legal towing, as mentioned earlier. Let us define a few terms here before we continue:
The Gross Vehicle Weight Rating (GVWR) indicates the maximum total weight that a vehicle can safely carry, including passengers, cargo, and the weight of the vehicle itself.
The GCWR is the maximum allowable weight of a tow vehicle, trailer, and their combined load.
The curb weight is the weight of your vehicle without any passengers, cargo, or accessories but with full fluids (oil, coolant, fuel, etc.). You can find your car's curb weight on the owner's manual or window sticker. If you lost those, you can get one from our window sticker lookup tool.
Let's break down the calculation process into three steps:
Step 1: Determine Gross Combined Weight Rating (GCWR)
Gross Combined Weight Rating (GCWR) is the maximum allowable weight of a vehicle, including its own weight, passengers, cargo, and any attached trailer with its load. This rating is crucial for safety, ensuring that the vehicle's engine, transmission, brakes, and suspension can handle the total weight without risk of failure. It's important that you do not load weights more than the GCWR to avoid safety and mechanical issues.
Here's the formula to calculate the GCWR:
GCWR = Weight of Tow Vehicle + Weight of Trailer + Weight of Cargo in Both Vehicle and Trailer
Step 2: Determining the Curb Weight
Curb weight is the total weight of a vehicle when it is not carrying any passengers or cargo, but with all standard equipment, necessary fluids, a full fuel tank, and no additional load. This measurement is essential for understanding the baseline weight of the vehicle, which helps determine towing capacity, payload limits, and overall vehicle performance.
Curb Weight = Weight of Empty Vehicle with Full Fluids
Step 3: Calculating the Towing Capacity
The last step in calculating the towing capacity is to utilize the simple formula, below is the formula for calculating the towing capacity. This simple formula could be utilized which is:
Towing Capacity = GCWR – Curb Weight
Let's use this 2023 Ford F-150 as an example for this calculation.
In this example, this vehicle can tow at a maximum capacity of 8,979 pounds safely. Thereby, it is recommended to tow an object not exceeding about 8,000 pounds, which should be about or slightly lower than 90% to the vehicle's towing capacity.
By observing the mentioned steps and incorporating the other factors, it becomes easy to know the towing capacities of your vehicle and exercise safe towing. Please refer to the specific mileage or distance settings of your automobile manufacturer owner's manual for more details and constraints.