Mounting the rack on the vehicle is not an easy process. The rack is not designed for cars with plastic bumpers. The thumb screws that tighten the legs & arms are made of cheap black plastic and can easily be stripped. The Saris Bones 805-2-Bike Trunk Mount Rack is poorly designed.May I suggest you go out and purchase a Thule bike carier, or hitch mount carrier by Thule. You get what you pay for...