I've had the experince of being rear-ended with a light wieght rear beam on my old 00rs-t. Notice I said "old" because I doing have it any longer. It was really nice watching the guy come in my rear view mirrior for about 50ft at 60mph. Then it happened, however it really didnt hurt. But it hurt the car. After I was hit I looked at my back seat and the spare was pushed through the seat and I could literally touch it. So yea, its not a good idea. The front I could see if you would using a FMIC, when, if you hit something then its your fault. But its no use putting the rear on and having someone else hit you. Its not worth it.