I seem to remember reading something about how the Demon wheels were factory balanced and the significance of the green stickers. I think it related to the heaviest or lightest point of the wheel and then the opposite point of the tire was aligned with this? The super stock wheels have the same stickers and I assume the same care in balancing. On my wheels, two have absolutely no visible stick on wheel weights (haven't looked at the back side to see if they have hammer on weights) and I don't notice and issue with drivability...have to assume they are balanced. I don't think I've ever seen a wheel from the factory before with no balancing weights.