One important thing to remember about tires. Make sure they are clean before using dressings. BTW, the black dust is brake dust getting deposited on your tires/rims by the silicone in the dressing. Be careful using Wesleys Bleach white~~it can/will haze and pit your rims if not applied properly. I use Simple Green, full strength with a little liquid car wash soap on a stiff bristle brush for my tires. Mothers also makes a tire & rubber cleaner that works well, but it is pricey, and the soap / simple green mixture works well. I then use Mothers Duration tire dressing to shine them up. I use Meguiars in a pinch, because thier products are comparable to Mothers, however, If I have a choice, I push the Meguiars bottle to the side and go with the good stuff. Like the bottle says, "There's No Shine Like Mothers" Plus Mothers have a more extensive line than Meguiars, so they offer products for every application you can think of.