Quick answer: GVWR (gross vehicle weight rating) is the most an RV, trailer or tow vehicle may weigh fully loaded. GAWR is the limit for each axle. GCWR is the most the tow vehicle and trailer may weigh together. Cargo carrying capacity (CCC) is what an RV can carry after its own weight, full fresh water and full propane are counted. Truck payload is what the tow vehicle can carry, including people, gear and the trailer’s tongue or pin weight. Find these on the labels on the RV and the driver’s door jamb, then weigh your loaded rig at a truck stop scale to confirm you are under every limit.
Weight is the quiet safety issue in RV travel. An overloaded trailer or motorhome brakes poorly, wears tires faster, sways more easily and puts extra stress on axles, frames and suspensions. Many owners find out they are overweight only after a blowout, a failed bearing or a scary sway event on the highway.
The good news is that every RV and tow vehicle comes with labels that spell out its limits. This guide explains each rating, where to find it and how to check your real numbers. For the bigger picture on choosing rigs, campgrounds and first trips, see our RV and van camping guide.
Sources: National Highway Traffic Safety Administration (NHTSA), “Towing a Trailer: Being Equipped for Safety” and tire and loading information placard rules (49 CFR 571.110 and 571.120); RV Industry Association (RVIA) weight label standards; Federal Motor Carrier Safety Administration (FMCSA) definitions of gross vehicle and combination weight ratings; CAT Scale Company guidance for weighing RVs. Owner’s manuals and labels on your specific vehicles are the final authority. Checked October 2026.
Why RV Weight Ratings Matter
Every rating on an RV or tow vehicle comes from the manufacturer’s engineering limits for brakes, axles, tires, frame, suspension and hitch. NHTSA’s trailer towing guidance warns that exceeding these limits can cause handling problems, overheated brakes, tire failure and loss of control.
Weight also adds up faster than most people expect. Water weighs about 8.3 pounds per gallon, so a 40-gallon fresh tank adds more than 330 pounds. Propane weighs about 4.2 pounds per gallon. Add food, cookware, camping chairs, tools, a generator, bikes and a full set of dishes, and a trailer can gain 1,000 pounds or more before anyone climbs in.
The Key RV Weight Terms
| Term | What it means | Where to find it |
|---|---|---|
| GVWR (gross vehicle weight rating) | Maximum total weight of a vehicle or trailer when fully loaded | Federal certification label, often near the door or on the front left of a trailer |
| GAWR (gross axle weight rating) | Maximum weight each axle may carry | Same certification label |
| GCWR (gross combined weight rating) | Maximum weight of the tow vehicle plus trailer and everything in both | Tow vehicle owner’s manual or towing guide |
| UVW or dry weight | Weight of the RV as built, before water, propane and cargo | RV weight label or brochure |
| CCC (cargo carrying capacity) | Weight available for cargo after UVW, full fresh water and full propane | RVIA weight label inside the RV |
| Payload | Weight the tow vehicle can carry: people, cargo and tongue or pin weight | Tire and loading information placard on the driver’s door jamb |
| Tongue or pin weight | Downward force of the trailer on the hitch | Measured; estimated from trailer weight |
| Towing capacity | Maximum trailer weight the tow vehicle is rated to pull | Owner’s manual or towing guide |
GVWR
GVWR is the ceiling for any single vehicle. For a motorhome it covers the chassis, the house, fuel, water, propane, passengers and gear. For a travel trailer or fifth wheel it covers the trailer and everything in it. The FMCSA defines gross vehicle weight rating as the value specified by the manufacturer as the loaded weight of a single vehicle.
GAWR
Each axle has its own limit. A trailer can be under GVWR overall and still overload one axle if heavy items sit at one end. Motorhomes with a heavy rear storage area or a loaded rear hitch rack are a common example.
GCWR
GCWR applies when towing. It is the total of the tow vehicle and trailer together, including passengers and cargo in both. Motorhome owners towing a car, often called a toad, also need to stay under the motorhome’s GCWR.
Dry weight and why it misleads
Brochures often advertise a trailer’s dry weight or unloaded vehicle weight. That number usually reflects the base model without options such as an extra air conditioner, awning, solar panels or a larger battery. Dealer-installed accessories add more. Plan with the trailer’s GVWR rather than its dry weight when checking whether a truck can tow it.
Cargo carrying capacity
Under RVIA labeling standards, RVs carry a weight label showing the cargo carrying capacity, calculated as GVWR minus the unloaded vehicle weight, the weight of full fresh water and the weight of full propane. Some labels also show the weight of a full water heater. If dealer-installed options were added after the label was printed, the real CCC is lower.
Payload
Payload is the tow vehicle’s carrying limit. NHTSA requires a tire and loading information placard on the driver’s door jamb that states the combined weight of occupants and cargo should never exceed a certain number of pounds. When towing, that payload must also absorb the trailer’s tongue or pin weight and the weight of the hitch itself. Payload is often the first limit a truck reaches, before towing capacity.
Tongue and pin weight
Tongue weight is the downward force a conventional trailer puts on the hitch ball. NHTSA’s towing guidance and many manufacturers recommend tongue weight of roughly 10 to 15 percent of the loaded trailer weight. Fifth-wheel and gooseneck trailers put more weight on the truck, with pin weight commonly in the range of 15 to 25 percent. Too little tongue weight is a major cause of trailer sway; too much overloads the tow vehicle’s rear axle and lifts the front wheels, reducing steering and braking.
How to Calculate What You Can Carry and Tow
The math is simple once you collect the numbers.
For a travel trailer
- Find the trailer’s GVWR. This is the worst-case loaded weight.
- Estimate tongue weight at 10 to 15 percent of that figure.
- Find the truck’s payload on the door jamb placard.
- Subtract the weight of all passengers, pets, cargo in the truck bed and cab, and the hitch from the payload.
- Compare what is left to the estimated tongue weight. If tongue weight is higher, the truck is overloaded.
- Check that the truck’s curb weight plus passengers plus cargo plus the loaded trailer stays under GCWR.
- Confirm the loaded trailer is below the truck’s rated towing capacity.
As a worked illustration with round numbers: a trailer with a 7,000-pound GVWR could have a tongue weight of about 700 to 1,050 pounds. A truck with a 1,600-pound payload carrying four people totaling 600 pounds, 150 pounds of gear and an 80-pound weight distribution hitch has 770 pounds left, which may not cover the upper end of that tongue weight. These numbers are examples only; use the figures from your own labels.
For a motorhome
- Find the motorhome’s GVWR and the cargo carrying capacity on the RVIA label.
- Subtract passengers, pets, food, gear and any accessories added after the label was printed.
- If you tow a car, check the hitch rating and the motorhome’s GCWR.
- Check rear axle loading, especially if you carry bikes or a cargo carrier on the back.
Our guide to types of RVs compares how much cargo different classes typically allow.
How to Weigh Your RV
Calculations are estimates. Weighing your loaded rig shows the real numbers.
Where to weigh
Truck stop scales, such as CAT scales found at many travel centers, let RVers weigh for a small fee. Some RV rallies and clubs offer individual wheel-position weighing, which can reveal side-to-side imbalances that axle scales miss.
How to weigh a towing setup at a truck scale
- Load the rig as you would for a trip: full fuel, water you normally travel with, propane, people and gear.
- Pull onto the scale with the truck’s steer axle on the first platform, the truck’s drive axle on the second and the trailer axles on the third. Record the weights.
- Drive off, unhitch in the lot if possible and weigh the truck alone, with the same passengers, to calculate tongue weight.
- Compare each number to the GAWR, GVWR and GCWR on your labels.
The difference between the truck’s rear axle weight hitched and unhitched shows how much load the trailer is putting on the truck, and the tongue weight is the difference in the truck’s total weight.
Weighing a motorhome
Weigh the front axle and rear axle separately, then the total. If you tow a car, weigh with and without it. Compare each axle to its GAWR and the total to GVWR.
How to Stay Within Your Ratings
- Travel with fresh water tanks partly full or empty if your campsite has water, and fill near your destination.
- Dump gray and black tanks before driving when possible; our guide on how to dump RV tanks explains the steps.
- Pack lighter cookware, dishes and camp furniture.
- Leave heavy tools and duplicate items at home.
- Distribute heavy items low and over or slightly ahead of the trailer axles.
- Keep heavy items out of the rear of a trailer, which reduces tongue weight and increases sway risk.
- Recheck weight after adding accessories such as solar panels, batteries or a generator.
Hitch and brake equipment
A properly rated hitch receiver, ball mount and ball are required for the trailer’s weight. Many heavier travel trailers use a weight distribution hitch, which spreads tongue weight across the truck and trailer axles, and some add sway control. Check the hitch’s tongue weight and gross trailer weight ratings, which are stamped on the receiver and ball mount. Most states require trailer brakes above certain weights, and a brake controller in the tow vehicle is needed to operate electric trailer brakes. Our beginner’s guide to towing a travel trailer covers hitching, sway control and driving tips.
Tires and Weight
Tires carry every pound of your rig. Each tire has a maximum load stamped on its sidewall at a specific inflation pressure. Underinflated or overloaded tires build heat and are more likely to fail.
- Inflate tires to the pressure listed on the vehicle’s placard or the tire manufacturer’s load and inflation tables for your actual weight.
- Check pressure cold, before driving.
- Replace trailer tires by age as well as tread, following the tire maker’s guidance.
- Use the weights from a scale to confirm each tire is within its rating.
For more on pressure, age and blowouts, see our guide to RV and trailer tire safety.
Common RV Weight Mistakes
- Matching a trailer to a truck using dry weight instead of GVWR.
- Looking only at towing capacity and ignoring payload.
- Forgetting that passengers, pets, the hitch and truck bed cargo count against payload.
- Traveling with full fresh water tanks for hundreds of miles.
- Adding accessories after purchase without rechecking weight.
- Never weighing the rig.
- Loading heavy gear at the rear of a trailer.
RV Weight Ratings Summary
GVWR is the most any single vehicle may weigh loaded, GAWR is the limit for each axle and GCWR is the most a tow vehicle and trailer may weigh together. Cargo carrying capacity shows what an RV can hold after its own weight, water and propane, and payload on the door jamb placard shows what a truck can carry, including tongue or pin weight. Use GVWR rather than dry weight when matching trailers to trucks, estimate tongue weight at about 10 to 15 percent for conventional trailers, and weigh your loaded rig at a truck stop scale to confirm every number. Staying within ratings keeps brakes, tires and handling working the way the manufacturer intended.
Frequently Asked Questions
What does GVWR mean on an RV?
GVWR is the gross vehicle weight rating, the maximum total weight of the RV or trailer when fully loaded with water, propane, cargo and, for motorhomes, passengers and fuel.
What is the difference between GVWR and GCWR?
GVWR applies to one vehicle. GCWR is the maximum combined weight of a tow vehicle and the trailer or car it is towing, including everything in both.
How much tongue weight should a travel trailer have?
A common guideline from NHTSA and manufacturers is about 10 to 15 percent of the loaded trailer weight for conventional trailers. Fifth wheels typically put 15 to 25 percent on the truck.
Where do I find my truck's payload?
Look for the tire and loading information placard on the driver’s door jamb. It lists the maximum combined weight of occupants and cargo, which also has to cover tongue or pin weight when towing.
Where can I weigh my RV?
Many truck stops have certified scales, such as CAT scales, where RVers can weigh for a small fee. Some RV clubs and rallies offer individual wheel weighing.
