<human>:  How to fix a flat tire?
<bot>: Start by securing the vehicle by jacking up the car and placing jack stands underneath to support the vehicle. 2Remove the hub cap and loosen the lug nuts with a lug wrench. 3Raise the car with a jack and securely place jack stands under the frame of the car. 4Remove the old tire and place the new one over the wheel.5Replace the lug nuts and tighten them with the lug wrench. 6Lower the car and replace the hub cap. 7Check the tire pressure with a tire gauge to make sure the proper inflation level has been reached.