"Towing capacity" doesn't mean much these days. Most 1/2- and 2/4-ton trucks will hit the limit on payload for tongue or pin weight before you reach the maximum towing capacity. This is especially true for a optioned-out 4x4 crew cab.
1) Write down the GVWR (gross vehicle weight rating) and GVWRR (gross vehicle weight rating - rear) off the sticker on the driver's door jamb.
2) Fill up the truck, pile in with your family, pets, and anything else you'll carry while traveling, and head to the nearest CAT scale (most truck stops have them).
3) Pull on to the front two plates of the scales so you get separate front (steer) and rear (drive) axle weights.
4) Add 75 lbs. to the rear axle weight from the scales for a good weight distributing hitch.
5) Subtract the drive axle scale weight from the GVWRR on the door sticker. This is what you have left over for tongue weight on the trailer.
6) Subtract the total weight of the truck (plus the 75 lbs. you added for the hitch) from the GVWR on the door sticker. This is the total payload you have left on the truck.
7) PAY NO ATTENTION to advertised dry weights or tongue weights on any travel trailer. Use the RVs GVWR (every RV has a sticker on the side just like the one on the truck) to determine the maximum loaded weight for the trailer. Use 12 - 15% of the trailer's GVWR (from the trailer's sticker) to estimate a total loaded tongue weight.
😎 If the calculated loaded tongue weight from #7 exceeds the remaining rear axle capacity you got in #5, you need to look for a smaller/lighter trailer.
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015