Alloy wheels are made of a composite of aluminium or magnesium. These wheels, otherwise known as rims, are light in weight which makes steering easier. They also have a shiny coating that make then attractive to car owners. But because alloy wheels are made of metal, they are subject to corrosion. Consequently, removing rim corrosion is a part of basic car maintenance.
Turn on the hose and spray the tire and wheel with cold water. Doing so removes dirt, salt, grime, dust and other debris from the wheel's surface.
Use a very-fine steel wool pad to scrub off any corrosion on the wheel. If your alloy wheels have been regularly maintained, there shouldn't be extensive corrosion.
Spray on an all purpose cleanser over the entire wheel and tire. Make certain that the cleanser contains no acid and is suitable for alloy wheels. Allow the cleanser to remain on the alloy wheels for a few minutes.
Spray the wheels with the hose to remove the cleanser and the dirt. Make certain all traces of the cleanser are washed away.
Dry the alloy wheels with a clean cloth.
Apply a wheel wax to the alloy wheels 2 to 3 days later. The wax provides a protective coating that keeps corrosion at bay. Reapply wax to wheels every month.