2007 BMW 530xi with pong noise in front when hits bumps it magnifies. 1 dealer said differential (replaced front differential & still same problem). Also replaced front left wheel bearing (still same problem). Swapped wheels & tires w/another 5-series & still heard same pong-noise (sounds like a rubber ball in a tin can noise). 2nd Dealer suggested swap for better Michelin Pilot tires which are softer & better insulated tires which are known for noise reductions. Will have these swapped on 8/19/2010 at dealer for no charge. Any suggestions?
Pong Noise 2007 BMW 530xi on 2007 BMW 530xi
by Visitor in Cedar Rapids, IA on August 14, 2010
ANSWER by Britvan on November 24, 2010
Have the same problem. It happens in colder weather. Was told that it was 1 or more of 5 bearings. BMW has yet to fix.