I washed my tires 6 times. 3 times with A to Z using a stiff tire brush, tires were still brown so I got some Westley's Blech-White and washed each tire 3 more times using a soft brass wire brush. Not much differance. When the tires dried, I got some Mr. Clean magic earaser and tried it on a smooth area of the tire and it removed the brown. Too many groves on the tire to use it on the tire. I had Ultima Tire & Trim on the tires befor washing it off with the A to Z. Any suggestions on getting the brown stuff off would be appreciated.Feed back please