- 1). Break the lug nuts loose on the wheel with the flat run-flat tire with a tire wrench. Turn the lugs 45 degrees counterclockwise to loosen the nuts, but do not unseat the wheel from the wheel hub. If you loosen the lug nuts too much, the wheel can collapse, damaging the wheel studs. You only need to unseat the lug nuts from the wheel studs and wheel face.
- 2). Place the floor jack under the appropriate side of the vehicle. If your flat tire is in the front, you'll need to jack up the front of the vehicle. If it's in the rear, you'll need to jack up the rear of the vehicle.
- 3). Place a jack stand under each pinch weld on either side of the vehicle according to where the flat tire is. Use the front pinch welds under the driver and passenger side door when jacking up the front, and the rear pinch welds under the rear driver and passenger side doors for the rear.
- 4). Lower the vehicle onto the jack stands.
- 5). Finish removing the wheel lug nuts and pull the wheel off the wheel hub.
- 6). Take the run flat tire to a tire shop to buy your new run flat tires and have them mounted on the wheel. Tire shops have a special tire mounting device that will properly mount and balance the tire for you. You'll want to have a tire shop do this for you as this requires special tools, knowledge, and experience to properly mount and balance a tire. You should always replace the tire with the same size tire that is currently on your wheel. The tire size is located on the sidewall of your old tire. It follows this format: "xx/xxx/Rxx". For example, your tire size may be 55/195/R15. The tire shop can also assist you in how to purchase your new run-flat tire.
- 7). Align the mounting holes on the wheel with the wheel studs on the wheel hub assembly. Slide the wheel onto the hub.
- 8). Tighten the lug nuts down on your run flat wheel and tire by turning them clockwise so that the wheel is secure on the wheel hub.
- 9). Set the dial on a torque wrench to 100 lb-ft. Turn the lug nuts clockwise until you hear the wrench click. The click indicates that the proper torque value has been reached.
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