2005-10 BMW M5 E60 Tow Hook License Plate Mount Bracket

While perhaps more expensive than I would've liked, this piece is a pretty solid example of getting what you pay for. Very easy to assemble and install, the range of adjustability is perfect for keeping it away from parking sensors and dialing in a spot that works best with the car's body lines. Build quality is top-notch; no vibrations or looseness whatsoever.