I did a stint as an RV salesman and the best advice I can give you is to be conservative. You are better off leaving yourself as big a weight buffer as you can afford. My personal recommendation is to deduct 2000lbs off your max capability. While there are mechanical reasons to limit the weight you are towing, there is a safety issue as well. You don't want a 10,000 lb trailer trying to push your truck around. I have witnessed several trailering accidents and the chaos that happens when an overloaded trailer starts the dance of death as it sways out of control is bad enough, but often it fliips the towing vehicle too.
Also consider your driving style. Are you conservative or aggressive? An aggressive driving style is just plain dangerous when towing, yet you always see those pulling their rig out in the fast lane because they have to be the first one to the lake. If you have an aggressive driving style, you definitely want to leave extra 'room' on your weight limit.
I pull a double axle utility trailer a lot with my K1500 burb and I don't overload it and I drive like a grandma. So far so good. Happy trailering.
Also consider your driving style. Are you conservative or aggressive? An aggressive driving style is just plain dangerous when towing, yet you always see those pulling their rig out in the fast lane because they have to be the first one to the lake. If you have an aggressive driving style, you definitely want to leave extra 'room' on your weight limit.
I pull a double axle utility trailer a lot with my K1500 burb and I don't overload it and I drive like a grandma. So far so good. Happy trailering.