Dynabeads - Wheel balancing

[Piggy]

Im no physics buff by any means but in my mad soup of a brain if a wheel/tyre has a heavy area and a light area, the forces of the wheel spinning will cause the heavy area to become a greater pulling force (if you stood spinning two objects on a piece of rope, one heavier than the other, you feel a greater pull from the heavy object) and thus pull all the beads into the heavy area rather than the lighter part which needs the weight.

Or am I talking rubbish as usual?!