Being over weight does concern me. I have a 1992 Lance with a 11’ 3” floor. Specta it seems to be very similar to the camper you have. I carry it on a 2000 Ford F350 7.3 diesel 4x4 CC Long bed SRW. I added air bags and upgrade to rear springs. The weight of the rig exceeded the stock 16” tires rating by more than 500 lb’s per tire on the rear axle. When loaded even with the tires at max 80 psi the sidewalls flexed a lot. I never felt that comfortable with the setup. As time went by I did become a little hesitant to drive the rig fully loaded. I recently added 19.5” wheels and tires. Now the new 19.5” tires are rated 615 lb’s more than the actual weight on them. The 19.5” tires side walls not flexing has made lot of difference in how the rig handles. And I feel a lot better about driving this rig now. I do have lot better piece of mind with this setup now.
Thanks,
swhunter