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      01-23-2013, 06:45 PM   #9
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Drives: 2009 335i
Join Date: Jan 2013
Location: Plano

Posts: 36
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Yes they do loosen a little, just enough to allow the braces to shift slightly. It is a very common problem. The sound you're hearing is transferring from the strut tower braces to the firewall that they are attached to. There's a round cover just rearward of the microfilter that contains one of the bolts you need to tighten. It's a big e-torx.
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