Originally Posted by vic325ci
Its hard to describe the sound, its like something is slipping and is trying to regain grip, its a uniform, repetitive sound and it only happens around the powerband. The only thing I can compare the sound to is maybe an M4 rifle in that when its on full auto its a continuous clunking sound. Could it have to do with my diff or even the driveshaft? I put in new shocks and springs a little while ago so I dont think its that...I adjusted my tire pressure back up to normal and of course its still doing it. Thanks alot for the help, Im gonna take it into BMW sometime next week and then I'll know for sure what it is and solve this mystery lol
Kind of sounds like it could be a loose exhaust pipe due to rusted hangers. A condition I have right now. Under load, at exactly 2000rpm, I get a loud noise that could sound like a rifle. Go under you car and check your exhaust hangers.
Especially the one in the middle of the car.