2007 328i Vibration Issue
Hi there, I have a 2007 328i with 79,000 that I purchased recently. I have just started to notice that when I am sitting at a red light with my air conditioning on, a strange shifting vibration under the vehicle on both the driver and passenger side. It feels like something is either shifting into or out of position and lasts for a few seconds. It does not happen when I turn off the air conditioning. Any ideas on what this could be?