I have found that after a good cleaning with just about any tire cleaner (my favorite being EO A2Z - only when real dirty), is that if you want the browning to at least disappear for a long time is to apply
Meg's endurance gel. After about the third application on my old tires, I greatly noticed a huge reduction in browning and the time lapse in which I would see it again. I'm now going through the same thing again with my new tires, so I will be attempting that plan again and see if it works.
