Years
ago it became evident (or so we thought at the time) that the 2 screws that hold the exterior mirrors on can
become corroded. Some owner’s even
reported losing a mirror. The corrosion
happens because water sits in the recesses of the mirror base after washing or
heavy rain. I replaced the screws on
this car with new stainless steel ones from McMaster Carr.
Now, all that said, the original BMW screws on my 16-year-old car were fine and showed no evidence of corrosion at all. But, My S54 has these stainless screws and it's better to be safe than sorry.
Type
316 Stainless Steel Socket Head Cap Screw, M5 Thread, 25mm Length, .8mm Pitch,
McMaster Carr, $10.16r/pack 25 (need 4 per car)
 |
| BMW screws on the left, McMaster Stainless on the right. |
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