Ray,
I understand what you are saying. I replaced my tires and wheels last October. Before that, I would have to replace tires about every 4- 6 weeks. I would not leave with out 3 spares. The first tire/wheel assembly came off before the upgrade and it was on the front drive axle. This last one just happened this past Saturday on the rear passenger size. I also keep up with my unit, the bearings were just repacked and greased last November. After I upgraded my tire and wheels, I have not had one singe tire blow out.
What is also frustrating about the constant tire issue is the amount of damage it caused to my unit. I spent over $5000 dollars in body damage from blown tires.
even if you take the pin weight off of the camper, there till is a problem. The unit is designed to haul "toys" or whatever in the cargo area, then add to that anything you have loaded for a trip. On top of your stuff, add in fresh water if you fill, black water, fuel etc. I only have about 1000lbs of stuff in my cargo area. The problem is as I see it, the unit is under axled period. They have put the extreme minimal amount they could, however, people are running down the road maxing out the axle weight. Theses untis should have a minimum of 6000lb axles, but in my opinion 7000lb would be the best.