Tire repairers and changers fix and replace tires on motor vehicles.
Tire repairers locate holes and tears in tires and make repairs. Tire changers rotate tires and replace worn-out tires with new ones. Many tire workers both replace and repair tires.
Tire repairers and changers drive cars onto lifts so that they can work with tires more easily. They loosen the lug nuts that hold the tires onto vehicles. Workers remove the wheels and take off the tires.
If the tires are being replaced, tire changers carry or roll the tires to where the other used tires are stored.
If the tires are being repaired, workers examine them for damage. They may put tires in water and watch for air bubbles that indicate where holes may be. They seal punctures by inserting rubber plugs and gluing them into place. They may fix larger holes by gluing on patches.
Repairers put the tires back on the wheels. They place wheels on balancing machines to determine whether wheels need counterweights to balance them. They may attach the counterweights to the wheel rims. They remount wheels onto vehicles.