If the rash is not that deep sand the lip down polish it up and respray it with clear coat.
How to fix gutter rash on black rims.
You need to remove any dirt or tire shine from the rim in order for the rimblades rimsavers to adhere correctly.
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.
To fix curb rash on rims sand the damaged areas down with 400 grit sandpaper.
Wiping out the coating on the rim.
In order to give the rim the same look with the same texture and color.
How to fix gutter rash on rims one.
Put spot putty on a putty knife and use it to fill in the damage so the rim is even and level.
Clean your wheels with soap and water and then give the wheel lip surface a good scrubbing with an alcohol based cleaner.