Ive used the Magic Eraser for a long time now and I never had any issues. Besides, if it ever does damage my rims and make them look horrid, it will give me a reason to buy new ones

 

if you have the time, do it by hand. get a buffer with a good sized wheel, makes things go by faster. and spare pads.

 

I use mothers mini powerball to clean my racing beat exhaust tips. Makes them look brand new

 

I tried it on my wheels. The thing came apart before I finished the first wheel. I might have done something wrong but overall the product didn't seem very durable.

 

The packaging for the Mr. Clean Magic Eraser specifically says not to use on your car's painted surfaces, wheels are painted.

Anyway, I bought a Magic Eraser and will let you guys know how well it works (or does not work) on returning my rear exhaust shrowds black again.