I found a long skinny brush at Pep Boys that works great with the Vette wheels. The only place it won't go is behind the caliper on the front wheels. If you roll the car slightly, you can touch-up that spot.
The absolute best way to clean and polish the wheels is to take them off the car and give them a good bath with soap and water. This way you can clean behind where the center cap and lug nuts blocks the wheel and you can clean the whole back of the wheel.
Give them a good coat of Mothers Clearcoat Wheel Polish :yesnod: ......it MUST be the clearcoat polish or you'll scratch the finish. When you're done, your wheels will look like these.... :D :thumbs: