text: Spinning the tire will spread the fluid along the outside perimeter of the tire.  The tire pressure will not affect nor disperse the liquid because of the density of the fluid is greater than the density of the air and gravity will keep the denser material on the bottom.  However, the centrifugial force of spinning when greater than the forced of gravity placed on the material will allow the material to spread in the direction of the greater force.  i.e. , as the tire spins the heavier material will spread along the outside preimeter of the tire in the direction of the force both away from the nucleus and in the direction of rotation.