maybe not for you, but I opened the 'wheel repair' pdf, here is an excerpt :
PLEASE NOTE: Although this is a Porsche wheel, the Wurth Silver Wheel Paint is a perfect match
for Porsche, BMW, Audi, Mercedes-Benz and some VW wheels. It can also be used to completely
refinish any wheel. The following technique, explained in nice detail by "NASAraser of
AudiWorld.com", is a good way to do a small area repair if you curb your wheel or otherwise
damage a small area.