Damage

Periodically inspect the tire treads and sidewalls for damage (such as bulges in the tread or sidewalls, cracks in the tread groove and separation in the tread or sidewall). If damage is observed or suspected have the tire inspected by a tire professional. Tires can be damaged during off-road use, so inspection after off-road use is also recommended.
WARNING: Age
Tires degrade over time depending on many factors such as
weather, storage conditions, and conditions of use (load, speed,
inflation pressure, etc.) the tires experience throughout their lives.
In general, tires should be replaced after six years regardless of tread wear. However, heat caused by hot climates or frequent high loading conditions can accelerate the aging process and may require tires to be replaced more frequently.
You should replace your spare tire when you replace the road tires or after six years due to aging even if it has not been used.
See also:
Emission control system
Your vehicle is equipped with various emission control components and a
catalytic converter which will enable your vehicle to comply with
applicable exhaust emission standards. To make sure that t ...
Utilizing the mediation/arbitration program (Canada only)
For vehicles delivered to authorized Canadian dealers. In those cases
where you continue to feel that the efforts by Ford of Canada and the
authorized dealer to resolve a factory-related vehicle s ...
Illuminated entry
The interior lamps, parking lamps and puddle lamps (if equipped)
illuminate when the IA key or the keyless entry keypad is used to unlock
the door(s).
The illuminated entry system will turn off ...
