<human>:  How to change a flat tire?
<bot>: 
1. Start by loosening the nuts on the wheel. Use a lug wrench to pinch the lugs and turn counter-clockwise to loosen.
2. Jack up your car until the tire is off the ground.
3. Remove the nuts and the flat tire.
4. Place the spare tire on the hub of the wheel.
5. Secure the nuts with your lug wrench, turning clockwise until tightened.
6. Carefully lower your car.
7. Fully tighten the nuts with your lug wrench to ensure the tire is secure.
8. Check the tire pressure of the new tire and adjust as needed.