That was always my biggest fear when I bought my first diesel truck. So far, I haven't done that, thank you Jesus. My biggest fear with the 5er was dropping the front on my truck bed rails. Still haven't done that one either, but my first outing with our rig, I heard a loud crash, and the guy in the site next to us did that to his truck. Opened the hitch, then decided to pull up a few feet to reach the sewer connection. Oops!
I hope I didn't just jinx myself.