Damage

Damage  - Tire care - Tires, Wheels and Loading - Lincoln MKX Owners Manual - Lincoln MKX

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:

    Changing rear window wiper blade
    The rear wiper arm is designed without a service position. This reduces the risk of damage to the blade in an automatic car wash. To replace the wiper blade: 1. Grab the wiper arm with one h ...

    Outboard head restraints
    The outboard adjustable head restraints consist of: Х a trimmed energy absorbing foam and structure (1), Х two steel stems (2), Х a guide sleeve adjust/release button (3), Х and a guide sleeve ...

    Conditions
    Х Heavily loading a vehicle may reduce fuel economy at any speed. Х Carrying unnecessary weight may reduce fuel economy (approximately 1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight c ...