Originally Posted by JEH412
No, they shouldn't scratch paint. They have a plastic cradle inside that matches the contour of the back of the mirror, and the cradle is lined with felt.
My set did wear the plastic a bit in one area where mud got in there and rubbed a bit. I had a soupy mess at a campground and subsequently had mud and debris get in there. No worries for me since my mirrors are solid black plastic.
Point is, you need to keep the inside of the sleeve clean. debris can get in there and work the finish like sandpaper.