I think the camper exerts much more leverage to the frame than equal weight loaded in the bed. The point of dual rear wheels is emergency manuevers will be absorbed and stabilized to a much larger degree with a wider track. Somebody coming straight on to you is going to produce a kneejerk reaction and your natural reaction is to turn the wheel and at a high rate of speed,my srw is going to roll compared to a dually. Daily,I see overloaded srw's slowing down dramatically for corners,while it's just another day for the wider tracked dually's.