Hopefully the last noise diagnosis thread for me... I get an occasional pop (could also be described as a soft "crack") from the front left. The noise you get when you tap your knuckle against the window is a similar sound.

This tends to happen mostly within the first couple minutes of driving after the car has sat for a while. While not consistently reproducible, it will often happen when I'm easing out of a parking garage (<1mph) right when the front left tire goes over the seam b/w parking garage and street. The noise will also happen as the car transitions from flat to going down while driving down through a parking garage. The noise doesn't seem to happen going over bumps.

Struts, mounts, FCAs, FCABs, tie-rods, end-links etc. are all new. Everything should be tight.

Ideas?