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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 (1 ½) 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.
Traction AA A B C
WARNING
The traction grade assigned to this
tire is based on straight-ahead
braking traction tests, and does not
include acceleration, cornering,
hydroplaning or peak traction
characteristics. The traction grades, from highest to
lowest are AA, A, B, and C. The grades
represent the tire
’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete. A tire
marked C may have poor traction
performance. Temperature A B C WARNING
The temperature grade for this tire
is established for a tire that is
properly inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either separately or
in combination, can cause heat buildup
and possible tire failure. The temperature grades are A (the
highest), B and C, representing the tire
’s
resistance to the generation of heat and
its ability to dissipate heat when tested
under controlled conditions on a
specified indoor laboratory test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. The grade C corresponds to a
level of performance which all
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passenger car tires must meet under the
Federal Motor Vehicle Safety Standard
No. 139. Grades B and A represent
higher levels of performance on the
laboratory test wheel than the minimum
required by law.
Glossary of Tire Terminology

Tire label: A label showing the
original equipment tire sizes,
recommended inflation pressure and
the maximum weight the vehicle can
carry.
• Tire Identification Number:
A
number on the sidewall of each tire
providing information about the tire
brand and manufacturing plant, tire
size and date of manufacture. Also
referred to as DOT code.
• Inflation pressure: A measure of the
amount of air in a tire. •
Standard load:
A class of P-metric or
Metric tires designed to carry a
maximum load at 35 psi [37 psi (2.5
bar) for Metric tires]. Increasing the
inflation pressure beyond this
pressure will not increase the tire ’s
load carrying capability.
• Extra load:
A class of P-metric or
Metric tires designed to carry a
heavier maximum load at 41 psi [43
psi (2.9 bar) for Metric tires].
Increasing the inflation pressure
beyond this pressure will not
increase the tire ’s load carrying
capability.
• kPa:
Kilopascal, a metric unit of air
pressure.
• PSI:
Pounds per square inch, a
standard unit of air pressure.
• Cold inflation pressure:
The tire
pressure when the vehicle has been
stationary and out of direct sunlight
for an hour or more and prior to the
vehicle being driven for 1 mile (1.6
km). •
Recommended inflation pressure:
The cold inflation pressure found on
the Safety Compliance Certification
Label (affixed to either the door
hinge pillar, door-latch post, or the
door edge that meets the door-latch
post, next to the driver's seating
position), or Tire Label located on the
B-Pillar or the edge of the driver’ s
door.
• B-pillar:
The structural member at
the side of the vehicle behind the
front door
• Bead area of the tire: Area of the tire
next to the rim.
• Sidewall of the tire:
Area between
the bead area and the tread.
• Tread area of the tire:
Area of the
perimeter of the tire that contacts the
road when mounted on the vehicle.
• Rim:
The metal support (wheel) for a
tire or a tire and tube assembly upon
which the tire beads are seated.
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F. 95: Indicates the tire's load index. It
is an index that relates to how much
weight a tire can carry. You may find this
information in your owner’ s manual. If
not, contact a local tire dealer.
Note: You may not find this information
on all tires because it is not required by
federal law.
G.
H: Indicates the tire's speed rating.
The speed rating denotes the speed at
which a tire is designed to be driven for
extended periods of time under a
standard condition of load and inflation
pressure. The tires on your vehicle may
operate at different conditions for load
and inflation pressure. These speed
ratings may need to be adjusted for the
difference in conditions. The ratings
range from 81 mph (130 km/h) to 186
mph (299 km/h). These ratings are listed
in the following chart.
Note: You may not find this information
on all tires because it is not required by
federal law. Speed rating
Letter rating
81 mph (130 km/h)
M
87 mph (140 km/h)
N
99 mph (159 km/h)
Q
106 mph (171 km/h)
R
112 mph (180 km/h)
S
118 mph (190 km/h)
T
124 mph (200 km/h)
U
130 mph (210 km/h)
H
149 mph (240 km/h)
V Speed rating
Letter rating
168 mph (270 km/h)
W
186 mph (299 km/h)
Y
Note: For tires with a maximum speed
capability over 149 mph (240 km/h), tire
manufacturers sometimes use the letters
ZR. For those with a maximum speed
capability over 186 mph (299 km/h), tire
manufacturers always use the letters
ZR.
H. U.S. DOT Tire Identification Number:
This begins with the letters DOT and
indicates that the tire meets all federal
standards. The next two numbers or
letters are the plant code designating
where it was manufactured, the next two
are the tire size code and the last four
numbers represent the week and year
the tire was built. For example, the
numbers 317 mean the 31st week of
1997. After 2000 the numbers go to four
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M. Maximum Permissible Inflation
Pressure: Indicates the tire
manufacturers' maximum permissible
pressure or the pressure at which the
maximum load can be carried by the tire.
This pressure is normally higher than the
vehicle manufacturer's recommended
cold inflation pressure which can be
found on the Safety Compliance
Certification Label (affixed to either the
door hinge pillar, door-latch post, or the
door edge that meets the door-latch
post, next to the driver's seating
position), or Tire Label which is located
on the B-Pillar or the edge of the driver’ s
door. The cold inflation pressure should
never be set lower than the
recommended pressure on the vehicle
label.
The tire suppliers may have additional
markings, notes or warnings such as
standard load, radial tubeless, etc.
Additional Information Contained on
the Tire Sidewall for LT Type Tires
Note: Tire Quality Grades do not apply
to this type of tire. LT type tires have some additional
information beyond those of P type tires;
these differences are described below.
A. LT: Indicates a tire, designated by the
Tire and Rim Association, that is
intended for service on light trucks.
B.
Load Range and Load Inflation
Limits: Indicates the tire's load-carrying
capabilities and its inflation limits. C.
Maximum Load Dual lb (kg) at psi
(kPa) cold: Indicates the maximum load
and tire pressure when the tire is used
as a dual; defined as four tires on the
rear axle (a total of six or more tires on
the vehicle).
D.
Maximum Load Single lb (kg) at psi
(kPa) cold: Indicates the maximum load
and tire pressure when the tire is used
as a single; defined as two tires (total)
on the rear axle.
Information on T Type Tires
T145/80D16 is an example of a tire size.
Note: The temporary tire size for your
vehicle may be different from this
example. Tire Quality Grades do not
apply to this type of tire.
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T type tires have some additional
information beyond those of P type tires;
these differences are described below: A. T: Indicates a type of tire, designated
by the Tire and Rim Association, that is
intended for temporary service on cars,
sport utility vehicles, minivans and light
trucks.
B.
145: Indicates the nominal width of
the tire in millimeters from sidewall edge
to sidewall edge. In general, the larger
the number, the wider the tire.
C.
80: Indicates the aspect ratio which
gives the tire's ratio of height to width.
Numbers of 70 or lower indicate a short
sidewall.
D.
D: Indicates a diagonal type tire.
R:
Indicates a radial type tire.
E.
16: Indicates the wheel or rim
diameter in inches. If you change your
wheel size, you will have to purchase
new tires to match the new wheel
diameter. Location of the Tire Label
You will find a Tire Label containing tire
inflation pressure by tire size and other
important information located on the
B-Pillar or the edge of the driver’
s door.
Inflating Your Tires
Safe operation of your vehicle requires
that your tires are properly inflated.
Remember that a tire can lose up to half
of its air pressure without appearing flat.
Every day before you drive, check your
tires. If one looks lower than the others,
use a tire gauge to check pressure of all
tires and adjust if required.
At least once a month and before long
trips, inspect each tire and check the tire
pressure with a tire gauge (including
spare, if equipped). Inflate all tires to the
inflation pressure recommended by Ford
Motor Company.
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You are strongly urged to buy a reliable
tire pressure gauge, as automatic
service station gauges may be
inaccurate. Ford recommends the use
of a digital or dial-type tire pressure
gauge rather than a stick-type tire
pressure gauge.
Use the recommended cold inflation
pressure for optimum tire performance
and wear. Under-inflation or
over-inflation may cause uneven
treadwear patterns
WARNING
Under-inflation is the most common
cause of tire failures and may result
in severe tire cracking, tread separation
or blowout, with unexpected loss of
vehicle control and increased risk of
injury. Under-inflation increases sidewall
flexing and rolling resistance, resulting
in heat buildup and internal damage to
the tire. It also may result in unnecessary
tire stress, irregular wear, loss of vehicle
control and accidents. A tire can lose up
to half of its air pressure and not appear
to be flat! Always inflate your tires to the Ford
recommended inflation pressure even
if it is less than the maximum inflation
pressure information found on the tire.
The Ford recommended tire inflation
pressure is found on the Safety
Compliance Certification Label (affixed
to either the door hinge pillar, door-latch
post, or the door edge that meets the
door-latch post, next to the driver's
seating position), or Tire Label which is
located on the B-Pillar or the edge of the
driver’
s door. Failure to follow the tire
pressure recommendations can cause
uneven treadwear patterns and
adversely affect the way your vehicle
handles
Maximum Permissible Inflation
Pressure is the tire manufacturer's
maximum permissible pressure and the
pressure at which the maximum load
can be carried by the tire. This pressure
is normally higher than the
manufacturer’ s recommended cold
inflation pressure which can be found
on the Safety Compliance Certification
Label (affixed to either the door hinge pillar, door-latch post, or the door edge
that meets the door-latch post, next to
the driver's seating position), or Tire
Label which is located on the B-Pillar or
the edge of the driver’
s door. The cold
inflation pressure should never be set
lower than the recommended pressure
on the Safety Compliance Certification
Label or Tire Label.
When weather temperature changes
occur, tire inflation pressures also
change. A 10°F (6°C) temperature drop
can cause a corresponding drop of 1 psi
(7 kPa) in inflation pressure. Check your
tire pressures frequently and adjust
them to the proper pressure which can
be found on the Safety Compliance
Certification Label or Tire Label.
To check the pressure in your tire(s):
1. Make sure the tires are cool, meaning they are not hot from
driving even a mile.
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Note:
If you are checking tire pressure
when the tire is hot, (for example driven
more than 1 mile [1.6 kilometers]), never
bleed or reduce air pressure. The tires
are hot from driving and it is normal for
pressures to increase above
recommended cold pressures. A hot tire
at or below recommended cold inflation
pressure could be significantly
under-inflated.
Note: If you have to drive a distance to
get air for your tire(s), check and record
the tire pressure first and add the
appropriate air pressure when you get
to the pump. It is normal for tires to heat
up and the air pressure inside to go up
as you drive.
2. Remove the cap from the valve on
one tire, then firmly press the tire
gauge onto the valve and measure
the pressure.
3. Add enough air to reach the recommended air pressure. Note:
If you overfill the tire, release air
by pressing on the metal stem in the
center of the valve. Then recheck the
pressure with your tire gauge.
4. Replace the valve cap.
5. Repeat this procedure for each tire,
including the spare.
Note: Some spare tires operate at a
higher inflation pressure than the other
tires. For T type mini-spare tires (refer
to the Dissimilar spare wheel and tire
assembly information for a description):
Store and maintain at 60 psi (4.15 bar).
For full-size and dissimilar spare tires
(refer to the Dissimilar spare wheel and
tire assembly information for a
description): Store and maintain at the
higher of the front and rear inflation
pressure as shown on the Tire Label.
6. Visually inspect the tires to make
sure there are no nails or other
objects embedded that could poke
a hole in the tire and cause an air
leak. 7. Check the sidewalls to make sure
there are no gouges, cuts or bulges.
Inspecting Your Tires and Wheel Valve
Stems
Periodically inspect the tire treads for
uneven or excessive wear and remove
objects such as stones, nails or glass
that may be wedged in the tread
grooves. Check the tire and valve stems
for holes, cracks, or cuts that may permit
air leakage and repair or replace the tire
and replace the valve stem. Inspect the
tire sidewalls for cracking, cuts, bruises
and other signs of damage or excessive
wear. If internal damage to the tire is
suspected, have the tire demounted and
inspected in case it needs to be repaired
or replaced. For your safety, tires that
are damaged or show signs of excessive
wear should not be used because they
are more likely to blow out or fail.
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Improper or inadequate vehicle
maintenance can cause tires to wear
abnormally. Inspect all your tires,
including the spare, frequently, and
replace them if one or more of the
following conditions exist:
Tire Wear When the tread is worn down to one
sixteenth 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
one sixteenth 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.
Damage
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.
Age WARNING
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
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U.S. DOT Tire Identification Number
Both U.S. and Canada Federal
regulations require tire manufacturers
to place standardized information on the
sidewall of all tires. This information
identifies and describes the fundamental
characteristics of the tire and also
provides a U.S. DOT Tire Identification
Number for safety standard certification
and in case of a recall.
This begins with the letters DOT and
indicates that the tire meets all federal
standards. The next two numbers or
letters are the plant code designating
where it was manufactured, the next two
are the tire size code and the last four
numbers represent the week and year
the tire was built. For example, the
numbers 317 mean the 31st week of
1997. After 2000 the numbers go to four
digits. For example, 2501 means the
25th week of 2001. The numbers in
between are identification codes used
for traceability. This information is used
to contact customers if a tire defect
requires a recall.
Tire Replacement Requirements
Your vehicle is equipped with tires
designed to provide a safe ride and
handling capability.
WARNINGS
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
provided by Ford. The recommended
tire and wheel size may be found on
either the Safety Compliance
Certification Label (affixed to either the
door hinge pillar, door-latch post, or the
door edge that meets the door-latch
post, next to the driver's seating
position), or the Tire Label which is
located on the B-Pillar or edge of the
driver’ s door. If this information is not
found on these labels then you should
contact your authorized dealer as soon
as possible. Use of any tire or wheel not
recommended by Ford can affect the
safety and performance of your vehicle,
which could result in an increased risk WARNINGS
of loss of vehicle control, vehicle
rollover, personal injury and death.
Additionally the use of
non-recommended tires and wheels
could cause steering, suspension, axle,
transfer case or power transfer unit
failure. If you have questions regarding
tire replacement, contact your
authorized dealer as soon as possible. To reduce the risk of injury, when
mounting replacement tires and
wheels, you should not exceed the
maximum pressure indicated on the
sidewall of the tire to set the beads
without additional precautions listed
below. If the beads do not seat at the
maximum pressure indicated,
re-lubricate and try again
When inflating the tire for mounting
pressures up to 20 psi (1.38 bar) greater
than the maximum pressure on the tire
sidewall, the following precautions must
be taken to protect the person mounting
the tire:
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WARNINGS
1. Make sure that you have the correct
tire and wheel size.
2. Lubricate the tire bead and wheel
bead seat area again.
3. Stand at a minimum of 12 feet (3.66
meters) away from the wheel and tire
assembly.
4. Use both eye and ear protection.
For a mounting pressure more than 20
psi (1.38 bar) greater than the maximum
pressure, a Ford dealer or other tire
service professional should do the
mounting.
Always inflate steel carcass tires with a
remote air fill with the person inflating
standing at a minimum of 12 feet (3.66
meters) away from the wheel and tire
assembly Important: Remember to replace the
wheel valve stems when the road tires
are replaced on your vehicle
It is recommended that the two front
tires or two rear tires generally be
replaced as a pair.
The tire pressure sensors mounted in
the wheels (originally installed on your
vehicle) are not designed to be used in
aftermarket wheels.
The use of wheels or tires not
recommended by Ford Motor Company
may affect the operation of your tire
pressure monitoring system.
If the TPMS indicator is flashing, your
TPMS is malfunctioning. Your
replacement tire might be incompatible
with your TPMS, or some component of
the TPMS may be damaged. Safety Practices WARNINGS
If your vehicle is stuck in snow,
mud or sand, do not rapidly spin
the tires; spinning the tires can tear the
tire and cause an explosion. A tire can
explode in as little as three to five
seconds. Do not spin the wheels at over 35
mph (56 km/h). The tires may fail
and injure a passenger or bystander. Driving habits have a great deal to do
with your tire mileage and safety.

Observe posted speed limits.
• Avoid fast starts, stops and turns.
• Avoid potholes and objects on the
road.
• Do not run over curbs or hit the tire
against a curb when parking.
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