I replaced my factory rotors with PowerDisc slotted rotors a couple of months ago. The factory rotors were giving me not one bit of trouble and when I pulled them they look VERY good after 23k miles. Very little wear and smooth as a babies butt.

FYI. I really like the slotted rotors and DiscItalia titanium kevlar pads. Very little dust and great stopping. I did put SS brake line in also.

MikeR