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Old 08-15-2012, 04:29 PM   #13
Registered User
Join Date: Nov 2007
Location: CT
Posts: 35
My Ride: 2004 330Xi
The strut has a slight groove where the pinch bolt rests, hence making a interference fitting, when you try to remove the bolt the head usually shears off and the stem of the bolt being slightly larger diameter than the distal threaded part it grabs the strut and keeps the pinched part of knuckle tight on the strut. You choices are limited since drilling out the hardened bolt is very difficult (you will need to drill out the threaded end of bolt without damaging the female threads on knuckle) , you can use a grinder to sacrifice either the strut or the knuckle. I had similarly frustrating experience in trying to remove this bolt. Just keep in mind that if you sacrifice the knuckle ( since it is cheaper of the two) you will also need new wheel bearing. Good luck and keep us posted.

When you enlarge the image you will see the groove just below the pin.
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