text: i put 5oz of fluid into a car tire and inflate it to 40 psi, do i have to spin the tirewill the psi disperseit i put 5oz of tire softener (liquid chemical)  inside my car tire.  do i have to sit there and spin the tire to get the chemical to cover the whole insider area or will the 40 psi i put in disperse the liquid and no spinning required.  it seems the only way to know is have a clear tire and see what happens.  ballons dont hold 40 psi so that dosent work for a test lol, thanks 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.