Ford Super Duty Owner's Manual page 358

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WARNING: Stay out of the trajectory (1) as indicated in the

illustration.

Inspecting Your Tires and Wheel Valve Stems

Periodically inspect the tire treads for uneven or excessive wear and

remove objects such as stones, nails or glass that may be wedged in the

tread grooves. Check the tire and valve stems for holes, cracks, or cuts

that may permit air leakage and repair or replace the tire and replace

the valve stem. Inspect the tire sidewalls for cracking, cuts, bruises and

other signs of damage or excessive wear. If internal damage to the tire is

suspected, have the tire demounted and inspected in case it needs to be

repaired or replaced. For your safety, tires that are damaged or show

signs of excessive wear should not be used because they are more likely

to blow out or fail.

2013 F-250/350/450/550 (f23)

Owners Guide gf, 3rd Printing, December 2012

Wheels and Tires