I ordered two new tires for my latest project. All though its exciting (except for writing the check) I am always disgusted when these new tires turn brown! Does anyone know what I'm talking about? Especially when they are exposed to the sun for even a short time. It doesn't seem to matter what brand either they all do it. For those that have no clue what I'm talking about it's almost like the tire sheds it's skin so to speak. Rub your finger over the brown and it looks like dirt rolling off and the tire will be black as can be under your finger. You can write your name on them. Now all my tractors that have new tires are strictly show tractors so I don't know if going out and using them would actually prevent this from happening. I remember hearing a while back that it could possibly be all the synthetic materials they are using these days that are actually causing this. Really nothing you can do other then completely scrub them and add tire shine (the kind that isn't greasy)and wait until it looks crappy again which isn't very long and do it over. I pulled a tractor out the other day from the garage and sitting inside the tires looked great,but the moment the tires started moving and flexing they were instant BROWN!! Grrrrrrr!!!!!