I have a soft long handled brush I use, has rubber on the edges to keep from scratching the wheels, the bristles get right in there. I also have a brush that goes around the lug nuts and cleans that area out. But that's when I am REALLY feeling ambitious.
i used armor all for the longest time but i wash cars for a living right now so i got all kinds of different acids i use that make the wheels SHINE but the armor all stuff works well also and like nim81 said eagle1 works really good too.
I do get a good bit of brake dust, but I just wipe the wheels down regularly. Good idea, chithead, I need a brush for around the lug nuts also. However, what I really need is a brush to keep the bugs off the radiator, lol!
I recently found a "California Wheel Duster" that I (and sometimes She) use to keep the dust down. It's not so bad on my truck (as I've got the stock rims with the plastic chrome like cover that has a bit of a lip), but the dust is down right nasty on her Charger (those damn Brembos will put out some dust).
Try to keep 'em cleaned up, she's typically more successful than I.
EBC Greenstuff pads in 6000 and 7000 series (not the 2000 series) are supposed to have a huge reduction in brake dust production. I'm putting them on front and rear tomorrow. We'll see. Until now my wheels get a quick wash mitt and bucket cleaning with an air hose drying 2-3 times a week... A real P.I.T.A.