[ERASER5]

All the factory plastic wheels do that. As you drive, you naturally wipe it down. If you leave one sit for awhile, the stuff accumulates and gets sticky. No, it won't really stop, it just out gasses less and less. Dash pads do the same thing. A lot of the stuff you wipe off the windshield is from the dash pad. Its just part of the joy of having older trucks.