I'm aware of those kits but the downside is that you must A) have the vehicle and wheels separate...and for best results tires/wheels separate. B) the finish that is aerosol sprayed on is not as longterm durable as the finish of a professional baked on finish. C) if there is any curb damage or abrasions in the metal the Wurth kits are not effective with those defects. D) if you choose to custom finish your wheels (say polished metal finish) the Wurth products cannot help you much. E) sometimes the Wurth stuff has trouble getting out the sand-paperish texture from the burned on brake dust

For a DIY or quick-n-dirty fix the Wurth products seem to work very well. The strength of Wurth is repainting, if there is anything more than just paint defects you need professional help.

HOpe this helps...Lee