I use bilthamber to remove brake dust deposits once in a while (maybe every 6 weeks) to ensure there is no build up of compacted brake dust in the spoke corners.
But on a regular wash (every week) I just use my normal snowfoam while I'm doing the rest of the car. The wheels are the easiest part of my car to clean compared to the lower half of the body - dirt does not seem to stick to my wheels.
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