Nothing looks worst to me than a clean Car,Truck ,or SUV ,with dirty Wheels Wheels. In my Detail Business I always include Dressing out the Wheel Wells,weather it's a wash or a full Detail. Unsightly,Dirty , Wheel Wells take away from a clean,shiny vechicle, so if your into cleaning your own Car ,Truck ,or SUV , make it a habit to periodically Dress-Black out your Wheel Wells. A clear (solvent - petroleum based ) product works best, such as Black Magic. You can find these clear tire dressings at your local automotive parts store. They tend to stick or adhere to the plastic and painted medal parts of the Wheel Well and cover the area more evenly. I have made a Demo video to show this method. Go to Nu-Sheen-Blog.Com to see more Auto Detailing Tips, and check out Meltdown Bug Remover.