Automatic tire changer for trucks, agriculture, earthmoving. Suitable for tubeless and tubeless tires. Self-centering 4-arm hydraulic chuck. 2-speed engine. Clockwise and anticlockwise rotation of the spindle. Universal tool. Spindle on fixed arm. Hydraulic lifting of the spindle arm (up and down). Hydraulic translation of tool holder arm (left - right). Tool changer with automatic lifting and manual rotation. Mobile remote control. Mobile roller ramp for easy wheel positioning.