Clean your wheels with soap and water and then give the wheel lip surface a good scrubbing with an alcohol based cleaner.
How to fix gutter rash on black rims.
Wiping out the coating on the rim.
If the rash is not that deep sand the lip down polish it up and respray it with clear coat.
Begin by sanding the damaged spot with a rough sandpaper of about 220.
To fix curb rash on rims sand the damaged areas down with 400 grit sandpaper.
Apply primer to the wheel if you re using rimsavers.
Check the rim if it has a protective coating.
Mask the tire and car so only the rim is showing be sure to cover the valve stem lug nuts center cap and brake pads.
Put spot putty on a putty knife and use it to fill in the damage so the rim is even and level.
In order to give the rim the same look with the same texture and color.