A flat tire due to a nail or screw can be a frustrating experience---especially on a tire with only a few miles on it. Instead of replacing the tire, purchase a tire repair kit and fix the tire yourself for a fraction of the cost. A properly installed plug patches the hole and seals the puncture sufficiently enough to re-establish an airtight seal and get you on your way.
Jack up your vehicle using your car jack. Loosen the lug nuts with the tire iron, and remove the tire. Keep the vehicle stable during this process.
Inspect the tire to locate the object causing the tire to go flat. If the object is a screw and the head remains undamaged, remove it with a screwdriver. If the object is not a screw or the head has sustained damage, pull it out with pliers.
Open the repair kit and locate the rasp tool, which resembles a round file. Insert the rasp into the puncture, turning it clockwise until you have fully inserted it. Leave the tool in the hole.
Locate the plugs in the repair kit, and remove one. Locate the remaining tool in the kit, which resembles a large needle with an eye. Pinch one end of the plug, and thread it halfway through the eye of the needle.
Pull the rasp tool out of the tire, turning it clockwise. Immediately insert the eye of the needle tool, and thus the plug, into the hole.
Push the tool into the tire, turning it clockwise, which will require some force. When 1/4 to 1/2 inch of the plug remains outside the tire, pull the tool out. The plug will remain in the tire with two ends protruding out.
Clip the ends of the plug with your clipper so they lie flush with the tire's tread.
Inflate the tire to the recommended specifications. Mount the tire onto the car, properly tightening the lugs nuts with your tire iron.
