Took the X5 to a dealer to figure out what the source of the sound.....After 5 minutes the tech figured out that since I recently installed new 20's on my car, the lug nuts were a bit loose. Apparently, after 100 miles it is pretty standard to have a "re-torque" and had I not brought my car in, I could have been in a bad situation!!

The tech was really friendly and said that many people come in with this issue since it sounds a lot worse than it actually is, but I am just happy that this is all squared away

Thanks for your help.

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2006 X5 3.0i TiAg
20' Style 87 Rims