Originally Posted by rfrich74
That appears to be a Thule load bar setup. When you purchase the clips that fit the base towers to your car they have the proper pins on them to go into the holes on the vehicle. It's the whole point of different clips for different cars.
...and once those pins are seated within the door frame and the doors are shut I don't see how the rack could come off short of something breaking or separating from having been incorrectly assembled in the first place.