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:
Cabin air filter
Your vehicle is equipped with a cabin air filter, located behind the glove
box. The particulate air filtration system is designed to reduce the
concentration of airborne particles such as dust, sp ...
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality. ...
Trailer brakes
Be sure your trailer conforms to all applicable local and Federal
regulations regarding trailer braking. If your trailer is equipped with
electronically-controlled brakes you will need to have an ...
