our limit is tv's GVWR.
It can tow 9600lbs, max GVWR is 7000 and GCWR is 14,400. So a fully maxed TV in GVWR leaves 7400 for a trailer load.
the truck alone tips the scales at 5400lbs..so that's 1600lb payload...2 adults, kids that keep growing, a dog, the hitch and we've got about 850 left for tongue weight.
Trailer ready for camping (and empty tanks water/black/gray) was 6200 lbs - so we're good.
it's not the HP, may be the brakes, tires, suspension, transmission, handling, etc. Running too heavy may cost you in longevity, reliability or safety - or just cost you in stress while driving.
Jill & Chris, Wills (15) Evie (13) & Toby our collie (6)
2011 Grey Wolf 28BH
2013 Chevy K1500 Crew w/ Reese StraitLine Dual Cam
Nights camped 2011: 11 2012: 18 2013: 12 2014: 12 2015: 13 2016: 36