I felt your pain with the crazy amount of brake dust our Camaro ZL1's produce, but I found a product really limits the dust that sticks on the wheels and makes the wheels super easy to clean.
The product is
Armor All Wheel Protectant.
See this YouTube video test of the product - you will be amazed.
Once you apply the product to the wheels, you can literally just hose-off the wheels with water for about 3-4 weeks before you need to reapply it.
The secret to the product is a silicone type chemical called "decamethylcyclopentasiloxane."
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2013 Camaro ZL1, Crystal Red, Auto, Exposed Carbon Fiber, Navigation.