I have a 2015 Forest River Rockwood Premier 2516G. It has a GVWR of 3292, and and "unloaded weight" of 2473, with an axle weight (per specs) of 2181, with a cargo capacity of 800 pounds.
Then there's the yellow sticker:
Per the yellow sticker the dry weight as it shipped from the factory was 2717 pounds, leaving a margin of 515 pounds for cargo.
First question: What does that 2717 include? Is that including empty propane tanks? Does it include the factory-installed optional fridge? Furnace? Single battery?
Second question: What is the basis the manufacturer uses to arrive at 3292 as the GVWR? Is this based on what the axle can handle, assuming 10-15% tongue weight? What the tires can handle? What the trailer's frame can handle?
My reason for digging deeper: As it shipped from the factory it has a cargo capacity of 515 pounds. Whether or not that includes the empty propane tanks, I don't know. What I do know is that I've added an air conditioner (85 pounds), a second battery (55 pounds), and possible a first battery (55 pounds, assuming batteries don't count in that 2717 dry weight figure).
It's difficult enough to drain the water heater of its six gallons that there's a good chance when I tow I'll be carrying the weight of the water heater's six gallons: 49 pounds. The cassette toilet's freshwater tank holds around 5 gallons: 42 pounds. If I tow with water in the main freshwater tank (such as for boondocking), that's another 167 pounds. Let's start doing the math:
515 - 85 (air cond) - 55 (2nd battery) - 55 (1st battery) - 49 (hot water) - 42 (toilet water supply) - 167 (freshwater tank) = 62 pounds remaining cargo capacity. That's 62 pounds for bedding, pots/pans, a stocked fridge, chocks, leveling blocks, empty graywater jugs, etc. And that assumes I don't have to count the 76 pounds that two full propane tanks weigh. If I count those, I'm actually over the GVWR without putting any other supplies on the trailer.
So of course the first solution is to not tow with water in the tanks. Stop at the CG spigot before backing into the slip, and carry some empty jugs to refill with. Also be sure to purge both the water heater and the toilet's freshwater. Now if we're counting propane and batteries, the math works out like this:
515 - 85 (ac) - 110 (two batteries) - 76 (two propane tanks) = 244 pounds for cargo.