Hey guys, I have a 2000 328ci in auto. My cars got a terrible vibration that is most prominent on the highway. It sounds like it is coming from the rear of the car and makes the entire car shake. Under hard acceleration the noise goes away completely. Under deceleration it is horrible, and under light acceleration it is less noticeable. I believe this is being caused by the driveshaft center bearing, or guibo. I might just replace both. If anyone could verify this please let me know, and if anyone has access to a good DIY that would also be appreciated, as well as part numbers, thanks.