What is the purpose of using a jack during a tire change?

Using a jack during a tire change is essential for lifting the vehicle off the ground. This lifting action is necessary to allow the technician or individual changing the tire to remove the flat or damaged tire and replace it with a spare or a new tire. When the vehicle is raised, it ensures that the wheels are free from contact with the ground, making it possible to safely and effectively replace the tire without any obstruction or risk of injury from the vehicle moving unexpectedly. The jack provides the necessary height and stability during this process, which is vital for the safety and efficiency of changing a tire.