You can pull 30k lbs, and as long as you're not overloading your axles, and have the brakes and axles on the trailer, you're safer than the guy pulling the big toy hauler with his cc dually with his axles at their ratings. I've grossed 27k off the receiver hitch, with a weight distributing hitch, and had 7,020 on the back axle, and like 4k and some change on the front axle. While technically the truck was "overloaded", neither the axles/wheels/tires were over their ratings. The trailer carried the majority of the weight.