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Old 11-18-2012, 09:37 AM
ard ard is offline
Resident Curmudgeon
Location: CA
 
Join Date: Jul 2009
Posts: 9,484
Mein Auto: '12 X5 35d/E39M5/996TTX50
On other BMWs it is a hex (allen). I'd order spares just in case it strips. If it does strip just drill the head off, remove the rotor, and grab the 'now exposed' threads with a vicegrips.
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