Best method for cleaning wheel & wheel well brushes?

[5IVE]

My brushes get really dirty after some jobs and sometimes never return to their original color. I`d like to maintain as clean a set of tools as possible. I usually soak them in a dishwashing detergent/simple green/water solution for a day, but they are still black. Can a wheel cleaner be used to clean brushes?

[imported_Jakerooni]

yup. The same stuff your taking off the wheels is getting caked up in your brushes. So just use the same wheel cleaner to get it off the brushes.

[BlueLibby04]

Ive had the same problem after cleaning rims caked with brake dust. I tried and tried to clean them but I could never get it out. After I used them for awhile it eventually cleaned itself. Ill never use them again on rims that dirty..