Hit the scale, how can I be this heavy?

I had the same sort of shock a few weeks ago. After 7 years and 75K miles of use, I finally weighed my rig. It was 12,200 without me or my wife and I still have some clothing and food to pack. Worse than that I have a three quarter ton truck and tires rated for maximum load of 3200#. I am about 3600# on the rear tires. I immediately ordered 19.5 wheels and tires. Otherwise the truck will continue to handle the weight. I have airbags, Rancho shocks and Supersprings. The Cummins diesel handles the pulling with no issues. Brakes seem good with decent stopping distances. I have done quite a bit of mountain driving and my original brakes are still under half worn. I am going to feel a lot better when I get my 19.5 wheels and tires.

I thought I had a very accurate estimate of the weight I added plus the base weight when the camper was built. I was off by 1000 pounds.