by MelissaD » Mon Apr 17, 2017 8:19 am
When they make your trailer and it rolls off the assembly line they weigh it. That's you dry weight. It's on a little sticker probably in the door jamb of your trailer.
Mine was 10,500# Dry weight for example. The manufacture said that based on the frame design, the axles, the tires and the hitch setup it should be able to safely carry 14,000# so that if my Gross weight (GVWR). They then took gross 14,000 - 10,500 = 3,500 # cargo weight.
Well things add up. I added a 2nd AC unit. So subtract 100# or so.
Propane, mine is 2 bottles at 55# each or 100# when full.
I added some cast iron pans because I like my fireside cooking that's probably 200#
Dishes, I like real dishes and they weigh more than disposable dishes.
A stocked panty is probably 200# (groceries are heavy)
Not to forget the lawn chairs and little tables for my drinks.
Water weighs 8# a gallon (about) so a full fresh water tank 50 gals (mine) is 400#
My waste water is 160 gallons (4x40 gal) 1280# if full (1 reason to dump before heading out if possible)
Everything you put in or on you trailer counts against cargo weight.
Point is, it all adds up, a whole lot faster, than you might think.
The larger the trailer the more people seem to pack away. By the time we got done with modifications and packing what we wanted we added about 1,500# to ours. In other words ours tips the scales over 12,000# now. My Pickup w/ trailer is pushing 20,000# rolling down the highway.
In your case you have 5,900 - 3,780 = 2,120 or 2,000 for simple math. They are reasonable numbers but did you get them off a brochure or off the unit? Unit numbers are actual, brochure numbers are engineer guesses used for comparisons. By the time you add propane, FW water, food, your stuff and ready to go camping you will probably use 500 to 750# of that. That would be average. If you are trying to figure out a tow vehicle you need to figure the trailer will weight between 5,000 and 6,000#. If you are looking for a safety marigin pick a vehicle based on the 6,000# number.