Recently I had to take off the rear bumper extensions on my jeep so that I could install the smittybilt src roof rack. It brought a question to mind. What purpose do the bumper extensions actually serve, or were they meant to serve? If they were to actually protect the vehicle they would be made of metal. But they are made of plastic so they can easily be ripped off if you hit something from the side and if you were to hit something from the back the plastic would just get pushed into the rear tire and undercarriage. Plus the plastic fades over time so they just wind up looking super ugly. As an aside is their a company that makes metal bumper extensions?