Wheel Cleaner?

[Perfectlap]

There are two standouts I have used. I mean VERY potent.

Meguiar's Wheel Brightener from their Pro Line. Has to be ordered from the website they don't trust it to be sold over the counter.

The other is Poorboysworld.com Wheel Cleaner which I use to clean the barrel of the wheel.
I dilute it with water spray the inside of the barrel let it sit while I scrub the tires.
Go back after five minutes with a spoke brush and its stripped bare to the paint in minutes. Tar needs a proper tar remover, that stuff dries like cement.

P21s Gel spray is good too and idiot proof.

p.s.
I washed my tires with some over the counter car wash soap Turtle Wax Ice Car Wash Soap(?) which was on sale at Target. When the tires dried they had a nice dark look. Think they put in some additive. Target has some nice Vroom line of wash mits,brushes and a handy bucket that has a flat side to make dumping water easier.