It your bumpers deeply scratched or dented, you need someone who specializes in bumper repair.
If you're anywhere near the So. Cal area, Bumpers Plus, owned by Chuck Freeman does excellent work. He fixed the curb rash on my front bumper. He's mobile and can be reached at 949 842-1255. He does work for several BMW dealers.
2004 E60 530is, Delivered 12/12/03, TiSilver/LGrey, PP, SP,PS, PDC, ACC, FRS, Step, Xenons, clear bra, body colored rear inserts. (Retired, 1983 henna red 320is)
2004 Corvette Z06 Commemorative Edition