Once you have your wheels and tires looking good, the wheel wells need a little tune up. My method takes a little time, but it works. First, I blast them with a spray-type coin car wash. Then, I wipe them with denatured alcohol, till the rag comes away CLEAN. Next, I remove the plastic pieces, or mask them . I put 2 inch blue masking tape on the wheel well lip, to prevent over spray from going on the body. Then I spray the undercoated areas with Transtar Tex Coat Chip Guard (p.n.) 4313. This stuff has a good film thickness, it's black, and not too shiny. It looks like OEM applied stuff. Then I treat the plastic pieces with silicone tire dressing, till they won't absorb any more. I give them a final wipe, and put them back in with new fasteners. While I'm in there, I wipe all suspension parts that are visible from the wheel well, with the silicone juice, to make them look new. BTW rumor has it that Raybestos Quiet stop disk pads (ceramic) won't make the dreaded black dust. They are a little more money, but supposedly worth it. I'll try them this summer.