for the past week my 3 has been acting up. it just isnt running smoothly anymore. when im driving theres a constant noise. it sounds like its comming from the front end, tires.. bearings mabye? wheel rubbing? its just an overall loud sound. specially when slowing down.... my car only has 7k on it. the sound is very hard to explain. but the sound level in the cabin of the car, is much higher now. i installed a cai, so the car is much louder in the higher rpms but that doesnt explain why at 40kms/h it sounds like im going 120km/h. it could be the tire rubbing something. any other ideas?