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Discussion Starter #1
I didn't notice this until I was ready to install the M3 mirrors but I noticed the M3 mirror holes where the bolts go aren't threaded so I can't bolt these up.

Do M3 mirrors (or 2006 M3 mirrors) attach differently or what? I don't know how to install these now since they won't bolt up.
 

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I had to replace one of the mirrors on my M3 about 6 months ago so I can answer your question. The holes, which do not come threaded, actually contain a soft metal on the inside. The screws are much harder and you actually just screw them in and they thread themselves. I know it sounds somewhat odd, but BMW showed me how to do this and it is correct. Just make very sure that when the screw starts to thread it is very straight.
 

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Discussion Starter #3
I had to replace one of the mirrors on my M3 about 6 months ago so I can answer your question. The holes, which do not come threaded, actually contain a soft metal on the inside. The screws are much harder and you actually just screw them in and they thread themselves. I know it sounds somewhat odd, but BMW showed me how to do this and it is correct. Just make very sure that when the screw starts to thread it is very straight.
Are you serious? You're a 100% sure?
 
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