All your points are valid.
In THEORY ... this truck camper could be VERY heavy:
- dry weight = 4917 lbs
- 66 gal water = 540 lbs
- 60 gal propane = 240 lbs
- 41 gal grey water = 336 lbs
- 41 gal black water = 336 lbs
- personal gear = 500 lbs ?
- motorcycle on rear = 300 lbs ?
Max weight in theory ... nearing 6700 lbs !!!
The theory is that one could have a full black tank, a full grey tank, a full fresh tank and full propane ... No smart RV person would do that, but in theory, that is the "max" of the liquids it could hold.
Even if he had NO liquids (only having personal gear and the m/c on the back) he's around 5700 lbs. I don't know any TC that runs with zero liquids; you either are full fresh and no grey/black on your way to the campsite, or you're near empty on the fresh tank and loaded on the grey/black on the way out.
Yeah - I think between 6200 - 6500 lbs is VERY realistic. And also well over any payload his rig was approved for.
Plus having the m/c on the back causes a rocking-couple motion that causes the frame to flex up/down (axle being the pivot) as the rig goes over road bumps and undulations. The rig is designed to have the bulk of the load over/ahead of the rear axle. I'll bet this thing was kind of light on the front end!
This guys is screwed, and honestly I don't blame Ram for denying coverage. If he wants to fight it, I'd demand a full, detailed weight be done before anything is removed.