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.
How to fix gutter rash on black rims.
To fix curb rash on rims sand the damaged areas down with 400 grit sandpaper.
If the rash is not that deep sand the lip down polish it up and respray it with clear coat.
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.
Put spot putty on a putty knife and use it to fill in the damage so the rim is even and level.
How to fix gutter rash on rims one.
Apply primer to the wheel if you re using rimsavers.
Clean your wheels with soap and water and then give the wheel lip surface a good scrubbing with an alcohol based cleaner.
In order to give the rim the same look with the same texture and color.