A tire changer (also known as a tyre demounting machine) is core equipment for automotive repair and tire service shops, designed to quickly and safely separate, dismount, and mount tires from wheel rims. It is widely used for tire replacement, patching, and pre-balancing operations on passenger vehicles such as cars, SUVs, and light trucks. Composed of key components like a 4-jaw chuck, demounting head, bead breaker arm, and foot pedal control system, it supports mainstream rim sizes from 10" to 24", and can handle special tires including low-profile and run-flat tires. This machine greatly improves tire service efficiency, avoids damage to tires and rims caused by manual disassembly, and features easy operation, durability, and stable performance. As an essential basic tool for tire shops, auto repair workshops, and 4S stores, it effectively reduces labor costs while ensuring operational safety and work efficiency.