Like many of us motor heads have over the years accumulated a vast assortment of “snake oils”, only to find the product short in its promises. If the product is costly or caustic it is not sold to the general public for our use. So really we get a watered down version to do our bidding with usually not so good results. If Domino's can have over 150,000 nation wide Hot Spots way can't they make a decent white wheel cleaner.
No all sidewalls/ lettering are created equal, certain tire manufacturers uses a releasing agent on their tire molds, like butter on a hot frying pan. That agent they use lifts up from the white causing to eventually turn a shade of brown..much like burnt butter......not all the cleaning will help this problem and recurrence will be for sure.
One of the reason why I don't do white, I like white, can't see spending more time on the white walls cleaning then the car. But the bike I own has them, and making them bright white is a priority in my daily misadventures. So after a cascade of chemicals, brushes, pads, and snake oils I tried and as horrific as it may sound...a low cut polishing compound. What I use is from ZEP Aviation #F38001, and I am sure there are other compounds that will work.
Try a small area first using PAPER towels and if works for ya, great......
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