Tire Care- Page 237

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As a result of the above dimensional
differences, sport-utility vehicles, vans and
trucks often will have a higher center of
gravity and a greater difference in center
of gravity between the loaded and
unloaded condition.

These differences that make your vehicle
so versatile also make it handle differently
than an ordinary passenger car.

TIRE CARE

Information About Uniform
Tire Quality Grades

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Tire Quality Grades apply to new
pneumatic passenger car tires.
The tire Quality Grades can be
found where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example: 

Treadwear 200

Traction AA Temperature A

.

They do not apply to deep tread,
winter-type snow tires,
space-saver or temporary use
spare tires, light truck or LT type
tires, tires with nominal rim
diameters of 10 to 12 inches or
limited production tires as defined
in Title 49 Code of Federal
Regulations Part 575.104 (C)(2).

Tire Quality Grades are
determined by standards that the
United States Department of
Transportation has set.

United States Department of
Transportation Tire Quality
Grades

The United States of America
Department of Transportation
requires Ford Motor Company to
give you the following information
about tire grades exactly as the
government has written it.

Treadwear

The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test course.
For example, a tire graded 150
would wear 1½ times as well on
the government course as a tire

234

Transit (TTH) Canada/United States of America, enUSA, Edition date: 03/2014, Third Printing

Wheels and Tires