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E85 / E86 Z4 (2003-2008)
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Old 12-28-2012, 05:54 AM
grales grales is offline
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Location: Tampa, FL
Join Date: Dec 2012
Posts: 2
Mein Auto: 2007 BMW Z4 3.0si
Question 2007 BMW Z4 Automatic Transmission Rattle?

Hey guys,

Does anyone with an E85 Z4 with automatic transmission experience any transmission rattle in lower speed (10-30 mph)? I just started noticing it with mine a few days back -- at first, I suspected a drive belt, but I do not hear the rattle when I have the car in park or neutral and revv the engine. It's definitely transmission related. The gears aren't shifting funky or anything in either full automatic or paddle-shift mode which is good -- the sound is a cyclical rattle, not too loud but noticeable enough in the cabin at lower speeds, so I'm guessing maybe flywheel?

I'm taking it to the dealer to have them analyze it, but I wanted to get some ideas to help better guide the mechanic as to where the issue may lie.

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