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:
All-wheel drive (AWD) system (if equipped)
Your vehicle may be equipped with a full-time all-wheel drive (AWD)
system. The AWD system is an active system, meaning it not only
responds to wheel slip between the front and rear axles but also ...
Bounce-back
When an obstacle has been detected in the window opening as the
window is moving upward, the window will automatically reverse
direction and move down. This is known as “bounce-back”. If the ignit ...
MKZ Engines, Transmissions and Drive Systems
The 2013 Lincoln MKZ offers three distinct powertrains. The standard
2.0-liter four-cylinder EcoBoost® delivers the performance of a traditional V6
along with expected segment-leading fuel economy ...
