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.
Begin by sanding the damaged spot with a rough sandpaper of about 220.
Apply primer to the wheel if you re using rimsavers.
In order to give the rim the same look with the same texture and color.
You need to remove any dirt or tire shine from the rim in order for the rimblades rimsavers to adhere correctly.
Wiping out the coating on the rim.
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.
If the rash is not that deep sand the lip down polish it up and respray it with clear coat.
Just a heads up the clear coat the use on most polished lips is extremely tough so i would recommend using some paint stripper just be extremely careful it will strip pretty much anything it comes in contact with.
To fix curb rash on rims sand the damaged areas down with 400 grit sandpaper.