i would do two things....I would go to your local automotive paint supplier and get a super fine sanding pad..dont remember the name of it..but is equivalent to 2,500 grit wet and dry sandpaper. Then use that with Bad to the Bone metal polish. Bad is available at most motorcycle web sites. Bad will make your rims look like chrome with minimal work. Its a liquid and very easy to use. after the pits are gone, then just use the Bad.