If it is just dust, try a stronger wheel cleaner perhaps, and use abrasion. I have a lambskin wheel mitt that i always use. Let the spray go on for a minute or 2, and start rubbing making sure to get all the hard corners. Be sure to rinse the mitt and your hand inbetween every wheel.
I also would recommend test fitting the wheels before breaking your back on them unless they were already on a 1 to make sure the offsets work as these cars are known to be picky
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2008 SGM 128i - 3 Stage IM - 130i Tune - Dinan Camber Plates - BMW PE - Injen Intake - 1M Mirrors - LCI Blacklines - M4 Spoiler - Blacked 263's - Aero Bumper - Aero Side Skirts - OMGSplitter - AFE Intake Scoops
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