my fronts are prety stained by break dust too, but i baut this stuff at the dollar store, works amazing. its called street appeal, by far best stuff i've ran into so far

Eagle one for the win!

Sounds like there is still a problem after the rims are cleaned with a cleaner.

I would try Dupont # 7 Chrome polish and el cheepo microfiber towels. # 7 has never let me down when there is a dirty wheel job to do.

After the wheel is clean and dry I would strongly recommend using a quality sealant ro seal the wheels. . Meguiars #21 Synthetic Sealant will do the job and not break the bank. I usually use Zaino after doing the entire car.

Nevr Dull Wadding Polish cleans them up, then a chrome polish to keep them that way. I was frustrated with mine to the point where I was going to have them re-chromed, and they cleaned right up to a mirror shine with Nevr Dull. It'* cotton wadding in a can, soaked in some solvent. You pull off a small piece of wadding, and used it to hand polish. Its a slow process (15 minutes per wheel) but the results are amazing.