FORD 2013 Fusion Hybrid v.1 - Manual (Page 283)

How Temperature Affects your Tire
Pressure
The tire pressure monitoring system
monitors tire pressure in each pneumatic
tire. While driving in a normal manner, a
typical passenger tire inflation pressure
may increase approximately 2 to 4 psi (14
to 28 kPa) from a cold start situation. If
the vehicle is stationary overnight with the
outside temperature significantly lower
than the daytime temperature, the tire
pressure may decrease approximately 3
psi (21 kPa) for a drop of 30°F (17°C) in
ambient temperature. This lower pressure
value may be detected by the TPMS as
being significantly lower than the
recommended inflation pressure and
activate the TPMS warning light for low
tire pressure. If the low tire pressure
warning light is on, visually check each tire
to verify that no tire is flat. (If one or more
tires are flat, repair as necessary.) Check
air pressure in the road tires. If any tire is
under-inflated, carefully drive the vehicle
to the nearest location where air can be
added to the tires. Inflate all the tires to
the recommended inflation pressure.
TIRE CARE
Information About Uniform Tire
Quality Grading
E142542
Tire Quality Grades apply to new
pneumatic passenger car tires. The 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.
These Tire Quality Grades are determined
by standards that the United States
Department of Transportation has set.
Tire Quality Grades apply to new
pneumatic passenger car tires. 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).
U.S. Department of Transportation Tire
quality grades: The U.S. 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 one
and one-half (11⁄2) times as well on the
government course as a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly from
the norm due to variations in driving habits,
service practices, and differences in road
characteristics and climate.
281
Wheels and Tires