I have actually tried the following:
Teflon Spray Wax (good longevity, nice shine/beading, bad--stains rubber and plastic trim white)
Teflon Wheel Cleaner (cleans wheels as advertised, doesn't appear to be highly alkaline or acidic, doesn't seem to live up to the claim that it will repel
grime to make future cleaning easier)
Teflon
Tire Shine (water-based PDMS dressing is one of the best OTC I've found and lasts thru several washes/rain)