One problem related to vehicle shudder has been reported for the 2005 BMW 330. The most recently reported issues are listed below.
While accelerating, the entire car shakes violently between 20-30 mph. This does not occur at any other speed and is more pronounce going uphill than down. Brought the car in and was told it was a broken engine mount. This same problem was repaired 2 years ago (June 2013) for the exact same thing. This should not be a reoccuring issue. Repair was not made and car is currently parked as car may cause serious accident in city driving with multiple stops and starts.