Unloaded Vehicle Weight (UVW)
UVW, Sometimes called the Dry Weight, is the weight of the RV without adding fuel, water, propane, supplies and passengers. The manufacturers UVW also does not include any dealer-installed options. This is the weight you should look for in order to help determine what you should tow. For a safe towing weight add 1,000 lbs to the UVW. Example: the UVW is 5,000 lbs, so you add 1,000 lbs for a buffered weight to work with. So the weight is 6,000 lbs. If your truck can tow at least 6,000 lbs. you should have more than enough towing capacity unless you pack more then the average camper.
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Wet Weight
The weight of the RV with the fuel, freshwater and propane tanks full.
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Gross Axle Weight Rating (GAWR)
The manufacturers maximum load weight, in pounds, that can be placed on the axle. If an axle has a 3500-lb. GAWR and the RV has two axles (tandem axles), then the RV would have a Gross Vehicle Weight Rating (GVWR) of 7000 lbs. (see GVWR below)
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Gross Combined Weight Rating (GCWR)
The manufacturers maximum load weight, in pounds, allowed for the trailer and tow vehicle. This rating includes the weight of the trailer, tow vehicle, fuel, water, propane, supplies and passengers.
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Gross Vehicle Weight Rating (GVWR)
The manufacturers maximum load weight, in pounds, allowed for the vehicle. This rating includes the weight of the vehicle plus fuel, water, propane, supplies and passengers.
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Net Carrying Capacity (NCC)
Sometimes called the payload capacity, this is the maximum weight of fuel, water, propane, supplies and passengers that can be added to an RV without exceeding the Gross Vehicle Weight Rating (GVWR). (see GVWR above)
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Payload Capacity
The maximum allowable weight that can be in or on a vehicle, including all cargo and accessories, fuel, freshwater, propane, passengers and hitch loads.
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Important Weights to Know
Gasoline weighs 6.3 pounds per gallon
Diesel fuel weighs 6.6 pounds per gallon
Propane weighs 4.25 pounds per gallon
Water weighs 8.3 pounds per gallon
