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RV weight ratings tell you how much your RV can weigh, how much you can load, and what your tow vehicle can handle. GVWR is the RV’s maximum loaded weight, UVW describes its unloaded weight, NCC describes carrying capacity, and GCWR limits the loaded tow vehicle and trailer combination. Check the labels on your specific RV and tow vehicle, then verify actual loaded weights before traveling.
You may also see CCC, or Cargo Carrying Capacity, on your RV’s label. Understanding how these terms relate helps you avoid treating an unloaded brochure weight as your ready-to-camp weight.
Gross Vehicle Weight Rating (GVWR) is the maximum permissible weight of the fully loaded vehicle, as specified by its manufacturer.
For a travel trailer or fifth wheel, that includes the trailer itself, installed equipment, cargo, water, propane, and other items carried aboard.
GVWR is a limit—not a measurement of what your RV currently weighs. Adding stronger tires or a higher-rated hitch does not, by itself, increase the RV’s GVWR.
Also, the trailer’s total weight includes the portion supported by the hitch. A trailer’s axle-scale reading alone does not represent its full loaded weight.
Unloaded Vehicle Weight (UVW) describes the RV’s weight as manufactured, before adding the loads excluded by its stated definition.
In the towable-RV definition described here, UVW excludes personal cargo, fresh water, propane, and dealer-installed accessories. Fluid inclusions can differ by vehicle type and published definition, so check the documentation for your unit.
UVW helps establish a starting point, but it does not tell you what your trailer will weigh after you add:
Use your individual RV’s weight information rather than assuming every unit with the same floorplan weighs exactly alike.
Net Carrying Capacity (NCC) is commonly expressed as:
NCC = GVWR − UVW
Using this definition, NCC covers everything added beyond the stated unloaded weight, including water, propane, belongings, tools, and accessories.
For example, an RV with a GVWR of 10,000 pounds and a UVW of 7,500 pounds has a calculated NCC of 2,500 pounds. That allowance must cover all items excluded from the UVW—not just the gear placed in storage compartments.
This example explains the calculation. Your RV’s actual labels and definitions determine its loading allowance.
You may encounter Cargo Carrying Capacity (CCC) instead of NCC. Do not assume the terms use identical calculations.
Keystone’s U.S. owner-manual definition calculates CCC by subtracting UVW and propane weight from GVWR. Canadian labeling uses a different calculation that also accounts for full fresh water, including the water heater.
Read the label on your RV to determine what is already included and which loads must come out of the stated allowance. Dealer-installed equipment and later upgrades can reduce the capacity remaining for your belongings.
Gross Combination Weight Rating (GCWR)—also called Gross Combined Weight Rating—is the maximum allowable loaded weight of the tow vehicle and trailer together.
That combination includes the truck, trailer, passengers, fuel, cargo, equipment, and supplies.
Find the applicable GCWR in your tow vehicle manufacturer’s documentation for its exact configuration. Engine, axle ratio, equipment, and other specifications can affect towing ratings.
Staying below GCWR does not establish that every other limit has been met. You must also remain within the tow vehicle’s GVWR, axle ratings, towing limits, and hitch ratings.
A trailer can be within its GVWR while still overloading the truck carrying its tongue or pin weight.
Travel-trailer tongue weight and fifth-wheel pin weight count toward the tow vehicle’s payload, alongside passengers, cargo, hitch hardware, and added equipment.
Check these limits together:
No single rating replaces the others.
Load your RV as you normally travel, including typical supplies and tank contents, then use a suitable vehicle scale.
Obtain the measurements needed to check the truck, trailer, axle loads, and hitch load. Follow the scale operator’s procedure so the hitch-supported portion of the trailer is accounted for correctly.
Compare the results with the labels and manufacturer limits for both vehicles. Recheck after substantial equipment changes or changes in how you load.
Contact your Keystone dealer if you need help interpreting your RV’s weight labels.
Disclaimer: The information contained in this article is deemed to be true and accurate at the time of publication. However, due to the evolving nature of our products and services, there may be changes or updates that occur after this article was published. We encourage users to verify the contents and consult with their dealer or Keystone RV for the most current information. If you have any questions or require further clarification, please do not hesitate to contact your dealer or reach out to Keystone RV directly.