Other than some kids that took one of our twin's Trek bike at a 1000 Trails campground, but abandoned it close by cause we always remove the seat at night, never had anything stolen. Been all over since 1987. We take pre-cautions such as use a cheap cable lock around the bikes and equalizer hitch head and lock the door when we leave it and at night. Never lock the storage compartments nothing in there worth more than the door they would have to tear off to get in there. If someone would take our old grill (which I leave out) then I could negotiate a new one.