Some funny responses to this one, however, I too have this same issue. I've been contemplating replacing the mirror and am wondering if it can be as simple as replacing the glass in the mirror rather than the entire mirror assembly.
Of course, I'm gonna look for plastic coating too, now that you mention it.
You can get just the mirror glass from the dealership. Get the European glass if you are going to replace them. The outer edge of the Euro glass is convex to see around your blind spots better. There seams to be a lot of complaints about the US mirror quality.
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