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:
Intelligent Oil Life Monitor™
Your vehicle is equipped with an Intelligent Oil Life Monitor™ that
determines when the engine oil should be changed based on how your
vehicles is used. By using several important factors in its c ...
Interior features
The integration of MyLincoln Touch to the new Lincoln MKS complements
Lincoln's most advanced instrumentation and controls to date.
The main instruments feature a central speedometer flanked by two ...
Fog lamp control
The fog lamps can be turned on
when the headlamp control is in
the positions
and the high beams are not turned
on. ...
