I'm currently using my mtb that I've converted for commuting with fenders, slicks and lights, but I'm getting the itch to switch it back for off road use and convert my beater road bike for commuting. My concern is the steel wheels and wet braking. Is there any way to improve the wet braking? I've thought of using sandpaper, but I don't know if there is a finish on the wheels that would prevent this from working, or what grit paper if it would. Any ideas?