Greetings Alex,

I would use a product called goof off which can be bought from your local Wal-Mart. This product will dissolve the dried paint and leave no petroleum residue on your disc. Just wipe it on and let it sit for 30 seconds or so, then wipe off the paint, I wouldn't leave this paint on the disc as it will hasten the braking pads performance after it heats up.

Charles

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"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan