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ive got a 2010 335i.... with only 800 miles on it i have the ticking noise, on startup you hear it .. once it gets warmed up it goes away...
ITS NORMAL....
A very good friend of mine who only works on BMW's told me that MOST BMW have this noise... he had a E46 and a E39 in the shop when i went there and BOTH cars had the SAME exact noise.... did some research and its just a noise concern... nothing being harmed...
He also told me the only downfall of this whole ticking is that if the timing chain tensioners ever go bad you wont be able to tell it the timing chain is making noise or if its the valves lol....
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