Tire Care; Inspecting Your Tires And Wheel Valve Stems - Ford 2011 F-250 Owner's Manual

Tires, Wheels and Loading
WARNING: Stay out of the trajectory (1) as indicated in the
illustration.

TIRE CARE

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.
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2011 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)