I was reading the forum before about noises and i decided to post mine. I am having a similar problem that many others have had with my 3. Whenever i go on the freeeway and get off the freeway, i hear this tapping noise while at idle. Its a very ryhmic tapping noise and you can barely hear it outside the car but it sounds like its coming from the firewall. I had the dealer look at it several times and they probably think i'm crazy now. They checked the AC compressor, replaced my intake manifold and still i hear the noise just about everytime i get off the freeway. It can start off quiet and then get louder. Please someone help me. The dealer said they were going to try and get the district service manager down here but its been almost 4 months and he still hasnt come down.