4300 lbs dry. The frontier pulled it pretty well but was kinda bouncy (porpoising) with the crappy leaf springs that nissan puts on it. my airlift 1000 came in will be putting it on today or this weekend so that will help I think with towing.
The atv trailer can be pulled loaded while in OD and the converter stays locked. That trailer loaded with furniture and the bed loaded with junk got 18MPG from NC to Tennessee.
No camper yet. I've towed them as rentals, hunting and other family owned campers, but being in the military I don't have much space or have the ability to move it often.