5-series Vibration Problem
I was driving at around 125 kph on the motorway last night and there was a sudden very loud thumping noise coming from (it seemed) the rear drivers side wheel.
I thought it was a tyre blow-out, but I never lost control at all. I stopped and had a good look but there appeared to be nothing wrong whatsoever. I slowly drove the remaining 10 Km home and after inspecting the wheel/tyre area thoroughly, could see no sign of a problem and the car drives fine now. The ONLY thing I noticed was the plastic underbody splash guard had a slight sag in it right next to the wheel. Could this fairly flimsy plastic panel cause such a loud noise? Honestly it sounded like a loud bass drum thumping at two beats per second.
Anyone else experience this? I have been driving 50 years, and this is a first for me!