WARNING: Do not become
overconfident in the ability of four-wheel
drive vehicles. Although a four-wheel drive
vehicle may accelerate better than a
two-wheel drive vehicle in low traction
situations, it won't stop any faster than
two-wheel drive vehicles. Always drive at
a safe speed.
Truck and utility vehicles can differ from
some other vehicles. Your vehicle could be
higher to allow it to travel over rough terrain
without getting stuck or damaging
underbody components. The differences that
make your vehicle so versatile also make it
handle differently than an ordinary passenger
car. Always maintain steering wheel control,
especially in rough terrain. Since sudden
changes in terrain can result in abrupt
steering wheel motion, make sure you grip
the steering wheel from the outside. Do not
grip the spokes. Drive cautiously to avoid
vehicle damage from concealed objects such as rocks and stumps. Drive slower in strong
crosswinds which can affect the normal
steering characteristics of your vehicle. Be
extremely careful when driving on pavement
made slippery by loose sand, water, gravel,
snow or ice.
Note:
Do not use four-wheel drive high or
four-wheel drive low mode on dry, hard
surfaced roads. Doing so can produce
excessive noise, increase tire wear and can
damage drive components.
FOUR-WHEEL DRIVE LIMITATIONS
Operating Four-Wheel Drive with a
Spare or Mismatched Tires
(If Equipped)
On four-wheel drive vehicles, the size of the
spare tire can affect the four-wheel drive
system. If there is a significant difference
between the size of the spare tire and the
remaining tires, you could have limited
four-wheel drive functionality. When driving
with the full-size dissimilar spare wheel and
tire assembly, we recommend that you do
not: •
Exceed
50 mph (80 km/h) with a
four-wheel drive mode turned on.
• Use a four-wheel drive mode on dry
pavement.
Driving with the full-size dissimilar spare
wheel and tire assembly can limit four-wheel
drive functionality. You can experience the
following:
• Additional noise from the transfer case
or other drive components.
Use of a dissimilar spare wheel and tire
assembly can lead to impairment of the
following:
• Comfort and noise.
• Winter weather driving capability.
• Wet driving capability.
• Four-wheel drive capability.
Note: Your vehicle could have a front air
dam that can become damaged, due to
reduced ground clearance, when taking your
vehicle off-road. You can remove this air
dam by removing the eight bolts that secure
it.
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(If Equipped)
HOW DOES STABILITY CONTROL
WORK
WARNING: Vehicle modifications
involving braking system, aftermarket roof
racks, suspension, steering system, tire
construction and wheel and tire size may
change the handling characteristics of your
vehicle and may adversely affect the
performance of the electronic stability
control system. In addition, installing any
stereo speakers may interfere with and
adversely affect the electronic stability
control system. Reducing the effectiveness
of the electronic stability control system
could lead to an increased risk of loss of
vehicle control, vehicle rollover, personal
injury and death. WARNING:
Remember that even
advanced technology cannot defy the laws
of physics. It's always possible to lose
control of a vehicle due to inappropriate
driver input for the conditions. Aggressive
driving on any road condition can cause
you to lose control of your vehicle increasing the risk of personal injury or
property damage. Activation of the
electronic stability control system is an
indication that at least some of the tires
have exceeded their ability to grip the
road; this could reduce the operator's
ability to control the vehicle potentially
resulting in a loss of vehicle control, vehicle
rollover, personal injury and death.
WARNING:
You are responsible for
controlling your vehicle at all times. The
system is designed to be an aid and does
not relieve you of your responsibility to
drive with due care and attention. Failure
to follow this instruction could result in the
loss of control of your vehicle, personal
injury or death.
If a driving condition activates either the
stability control or traction control you may
experience the following conditions:
• The stability and traction control light
flashes.
• Your vehicle slows down.
• Reduced engine power. The stability control system has several
features built into it to help you maintain
control of your vehicle:
Electronic Stability Control
Electronic stability control enhances your
vehicle
’s ability to prevent skids or lateral
slides by applying brakes to one or more of
the wheels individually and, if necessary,
reducing engine power.
Roll Stability Control
Roll stability control enhances your vehicle ’s
ability to prevent rollovers by detecting your
vehicle ’s roll motion and the rate at which it
changes by applying the brakes to one or
more wheels individually.
Curve Control
Curve control enhances your vehicle ’s ability
to follow the road when cornering severely
or avoiding objects in the roadway. Curve
control operates by reducing engine power
and, if necessary, applying brakes to one or
more of the wheels individually.
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LOCATING 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.
See Locating the Safety Compliance
Certification Labels (page 336).
DEPARTMENT OF
TRANSPORTATION UNIFORM TIRE
QUALITY GRADES 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 us 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 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.
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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
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.
INFORMATION ON THE TIRE
SIDEWALL
Both United States 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.
Information on P Type Tires
P215/65R15 95H is an example of a tire
size, load index and speed rating. The
definitions of these items are listed
below. (Note that the tire size, load index
and speed rating for your vehicle may
be different from this example.)
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A. P: Indicates a tire, designated by the
Tire and Rim Association, that may be
used for service on cars, sport utility
vehicles, minivans and light trucks.
Note:
If your tire size does not begin with a
letter this may mean it is designated by
either the European Tire and Rim
Technical Organization or the Japan Tire
Manufacturing Association.
B.
215: 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.
65: Indicates the aspect ratio which
gives the tire's ratio of height to width.
D.
R: Indicates a radial type tire.
E.
15: 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. 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
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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
(TIN): 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.
I.
M+S or M/S: Mud and Snow, or
AT:
All Terrain, or
AS:
All Season.
J.
Tire Ply Composition and Material
Used: Indicates the number of plies or
the number of layers of rubber-coated
fabric in the tire tread and sidewall. Tire
manufacturers also must indicate the ply
materials in the tire and the sidewall,
which include steel, nylon, polyester,
and others. K.
Maximum Load: Indicates the
maximum load in kilograms and pounds
that can be carried by the tire. See 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), for the correct
tire pressure for your vehicle.
L.
Treadwear, Traction and
Temperature Grades:
*
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 times as well on the
government course as a tire graded 100.
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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. 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.
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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 (TIN): 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 set pressure. For
example: For P-metric tires
35 psi
(2.4 bar) and for Metric tires 36 psi
(2.5 bar). 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
42 psi (2.9 bar).
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 tire 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 mi (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 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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