I have been running Falken Wildpeak A/T3W tires on my 2016 Tacoma for the past 6 months. I like the tire, but the sidewalls have turned brown and I can't get it off.
At first I noticed it after I washed the tires and applied Meguiar's Hot Shine, then went for a ride down a dirt road. The product seemed to attract a lot of dirt but after washing the tires many times (this was several months ago now) the brown persists.
Then I read about tire blooming. I suppose it could be this, but the sidewalls are very brown and it won't come off like blooming is supposed to. I've tried washing the sidewalls with dishsoap and water, citrus degreaser and car wash liquid. When I use the citrus degreaser, it turns very discoloured so I think it's getting the brown off, but then when the tire dries it turns brown again.
I've tried attaching a picture of my tire, after washing it thoroughly today with citrus degreaser and a brush.
Any suggestions?