
When your tire goes flat, pull off to a place that is out of traffic. A parking lot is the best. Put on your emergency brake to keep your car from rolling. You will then need your lug nut tool, jack and spare tire. The next thing you will do is lightly loosen the lug nuts. After this, jack up the car, and finish removing the lug nuts.
After the lug nuts are off, remove the tire. Put the spare tire on, and lightly tighten the lug nuts. Lower the car with the jack, and then finish tightening the lug nuts. Replace your tire tools, and be on your way.