Industrial strength brake dust remover recommendation?

[rumatt]

I just pulled out my winter wheels and hole f*ck. They're black and yellow from brake dust. Soap suds and a brush did nothing. They look ridiculous.

What cleaner to people recommend for this level of carnage? The spokes are bad enough, but the rim itself is thick black. I know clay works but it's so thick I need to clean the top layers off first.