How do I get that whitish discoloration off of my aluminum wheels?
It will depend on what is causing the white material to be visible. If it is water stains, from hard water, then you can mix some white vinegar and water (4-parts white vinegar to 10-parts water) and rub it off easily with a sponge. Be sure to rinse and then dry the wheel afterwards to prevent it from happening because of the rinse water used.
If the residue is caused by an etching and discoloration of the aluminum – then you’ll need to get some aluminum polish, such as Mag-Chrome Aluminum Metal Polish by Eagle One. Thoroughly clean the wheel and then follow the directions on whichever brand you purchase. This process can take quite a bit of time – and elbow grease.
