When I bought my Suburban (89 6.2 diesel), it had been neglected for some time. The previous owner had put these fairly fancy rims on it... then apparently never cleaned them. I just got around to trying to clean them with a spray bottle "wheel cleaner" product. While it helped, the results are not great. Not sure what the grey specks are..assume baked-on brake dust? Any advice or product recs would be appreciated.
