Thread: Timing belt
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      06-08-2013, 08:17 AM   #14
Efthreeoh
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Drives: E90 & Z4 Coupe
Join Date: May 2012
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LOL.

Man, you guys worry waaaay to much. It's a timing chain and is designed to last the life of the engine; just the same as the oil pump, bearings, pistons, rings, and all the other internal engine parts. If it had a replacement interval, then BMW would design the engine to easily replace it (e.g. a timing belt).

Yes, it cold fail due to improper assembly, or a manufacturing defect in one of the parts in the system, but it is DESIGNED to last the life of the engine. The design-life of the engine is well past 150,000 miles.