From my experience and watching others, fender covers work very well the first few times you use them. Then they get dirty on the fender side and start doing more damage than using nothing at all. Since the outer surface is plastic, you can't wash them and cleaning by hand is a PITA. YMMV
A good coat of wax and some clothes that won't scratch paint have worked well for me. For those rare occasions when I feel the need to use a cover, I'll grab a soft blanket out of the closet and throw it in the washer when done.
|