Tire wear

When the tread is worn down to 1/16th of an inch (2 mm), tires must be replaced to help prevent your vehicle from skidding and hydroplaning. Built-in treadwear indicators, or “wear bars”, which look like narrow strips of smooth rubber across the tread will appear on the tire when the tread is worn down to 1/16th of an inch (2 mm).
When the tire tread wears down to the same height as these “wear bars”, the tire is worn out and must be replaced.

See also:
Safety
The Lincoln MKT is a Top Safety Pick from the Insurance Institute for Highway
Safety, which means it scores the top grade of Good in front, side and rear
crash tests, as well as a new roof-strengt ...
Illuminated exit
• When all vehicle doors are closed and the key is removed from the
ignition, the interior lamps and the puddle lamps (if equipped) will
illuminate.
The lamps will turn off if all the doors remai ...
Tire Replacement Requirements
WARNING: Only use replacement tires and wheels that are the
same size, load index, speed rating and type (such as P-metric
versus LT-metric or all-season versus all-terrain) as those originally
...
