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Old 03-07-2013, 11:12 PM   #624
Plaka
Brevis illi vita est
 
Joined: Jun 2010
Oddometer: 4,582
Quote:
Originally Posted by Beemerboff View Post
I don't think the mod is unreversable - the existing hole is nominally 8 mm with a decent bit oversize for powdercoat , etc, probably 8.2/8.3 mm.

The daylight opening on a 10 x 1.25 tapped hole is 8.75 mm so the difference in opening size is less than 20 thou, which I don't think would stop you refitting it OEM mirrors when the time came to sell.
If you Helicoil or Timensert, you tap a much bigger hole. Then you are reversing the threads on one side so that one is shot...and the 8mm thread will stuff in a 10mm hole but won't fit right. Using brackets is reversible. Take the brackets off.
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