Tires: Service Precautions

WARNING:
- Never run the engine with one wheel off the ground, for example, when changing a tire. The wheel resting on the ground could cause the vehicle to move.
- The tire and wheel must always be correctly matched. It is very important to determine the size of each component before any assembly operations commence. Do not mount a 16-inch tire on a 16.5-inch wheel. Failure to adhere to these instructions can result in an explosive separation and cause serious bodily injury or death. Do not mount a 16.5-inch tire on a 16-inch wheel. The tire can come off without warning.
- Aftermarket aerosol tire sealants are extremely flammable. Always question the customer to make sure these products have not been used.
- Use only wheels and wheel nuts that have been designed for current model year ford trucks. Aftermarket wheels or wheel nuts may not fit or function correctly, and can cause personal injury or damage the vehicle.
- Always wear safety goggles or a face shield when performing any work with tire and wheel assemblies.
- Retighten the wheel nuts at 800 km (500 miles) after any wheel change or any time the wheel nuts are loosened.
- Failure to retighten wheel nuts at the mileage specified can allow wheels to come off while the vehicle is in motion, possibly causing loss of vehicle control and collision.

CAUTION:
- Do not clean aluminum wheels with steel wool, abrasive-type cleaners or strong detergents. Use Custom Bright Metal Cleaner .8A-19522-A or equivalent meeting Ford specification ESR-M5B194-B.
- Reduce the air pressure as much as possible by pushing the valve core plunger in prior to removing the valve core.