Car Tire Changer Machine Semi Automatic Tire Changer Machine Powerful built-in Bead Blaster to seat the beads on the most stubborn tires. Compressed air is stored in the external tank until that air is needed for the bead blaster. The delivery of the air is controlled by a foot pedal on the machine. Tire Changer For Car Powerful Jetblast bead seating system works through clamps. The "blast" of compressed air applies pressure to the top sidewall, temporarily seating the top bead of the tire to the rim. The large volume of compressed air is then directed toward the bottom sidewall and seat the lower bead of the rim. This process takes less than one second in most car and light truck cars. When the pedal is fully depressed, a large volume of compressed air is "blasted" into the cavity of the tire through holes located on the turntable slide mechanism. (Just behind the clamping jaws). We als…