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      12-31-2013, 04:16 PM   #5
Dionysus
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Brake squeal is a high frequency vibration. Suspension geometry and wheel imbalances are sources of introducing vibration as well as the brake components themselves, which makes it harder to diagnose and rectify as related wear and tear to the brake components can mean that the source is not obvious and several items need to be replaced to cure it.

Not sure if BMW has tuned this out of the LCI or the specific CP suspension geometry has cured it (it was present on the pre-LCI demos I drove), but my non-ceramic LCI CP does not have this problem fortunately, as I would find it difficult to live with. It did briefly appear after I left the discs with rust on them for a couple of weeks (took some revs to free the brakes), but disappeared after the discs had been cleaned up through applying the brakes.

You can clean or replace the pads/discs/calipers, etc. to attempt to fix the issue, but it may reoccur if the source is not also fixed.

Last edited by Dionysus; 12-31-2013 at 04:23 PM..
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