I took a measurement this weekend when I went out camping. The rear bumper is 2 inches lower when hooked to the TT.
Just to give you guys something else to rant about; I towed my TT to my usual camping spot this weekend 70 miles away and I had a 15 MPH cross wind gusting to 30 and I don't have any sway control either. :E
I also drove there with the fridge running on gas. Stopped to fill up on gasoline without shutting the fridge off. Oh, and on the way home I forget to turn off the water heater and the pilot light blew out on the way.
I have a burned out clearance light too.
I drove with my dog untethered in the cab of the pickup, I drove around the park with her in the bed of the pickup, and I left her in the camper one time when I went down to the store to get beer and ice.
Did I forget anything?