[CBattaglia]

If you use metal polish and the polish turns black when buffing you are on metal. When I first got my car I used wesleys white wall cleaner on the tires and it blemished the wheels. The only way I could describe it was like very fine pitting. The polishes didnt completely get rid of the marks and I struggled with it for a couple of years. What finally got the wheels shining like new again was 000 steel wool. Buff with the steel wool, you will see the nice shine come back quickly. Then use polish.