[JRTJH]

We've had members report rear bumper damage from the spare tire mount vibrating loose and damaging/bending the bumper. I removed everything from my rear bumper and had a class 3 hitch welded to the frame. I wouldn't trust the rear bumper to carry anything, although there are some people who have mounted Curt bumper hitch receivers to their bumper and carried everything from bikes to generators.

My advice, like Bob's, is don't trust the rear bumper for anything other than a spare tire, if even that.