traction control DODGE DURANGO 2020 Vehicle Warranty

of the replacement tire. Vehicle handling could also be affected.
Consult the vehicle Owner ’s Manual or tire manufacturer for
recommendations.
• If tires with different speed ratings are used, it is recommended that
the lowerspeed- rated tires always be placed on the front axle. This is
to prevent a potential oversteer condition.
FOUR-WHEEL DRIVE (4WD) AND ALL-WHEEL DRIVE (AWD)
VEHICLES
If no instructions for tire mixing appear in the vehicle Owner ’s Manual,
follow these guidelines:
•Do

not
mix
tire
sizes.
All
four
tires
must
be
marked
with
the
same
tire

size,
unless
otherwise
specified
by
the
vehicle
manufacturer.
This
also

applies
to
/snow
tires.
• Do not mix tread pattern types such as all-terrain and all- season.
STUDLESS WINTER/SNOW TIRES
•It

is
always
preferable
to
apply
/snow
tires
to
all
wheel

positions,
including
dual
tires,
to
maintain
vehicle
mobility
and

control.
• If

/snow
tires
are
applied
to
the
front
axle
of
any
vehicle,

/snow
tires
must
also
be
installed
on
the
rear
axle.
DO
NOT

apply
/snow
tires
only
to
the
front
axle.
This
applies
to
all

passenger
and
light
truck
vehicles,
including
front-wheel-
drive,
4WD,

and
AW
D
vehicles.
• If

/snow
tires
are
installed
on
the
rear
axle
of
any
vehicle,
it
is

recommended
(but
not
required)
that
they
also
be
installed
on
the
front

axle.
WARNING!
Unless
/snow
tires
on
the
rear
axle
have
comparable
traction

qualities
to
the
tires
on
the
front
axle,
the
vehicle
may
experience

adverse
handling
characteristics.
This
may
result
in
loss
of
vehicle

control,
which
can
lead
to
serious
personal
injury
or
death.
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237

STUDDED WINTER/SNOW TIRES
•Studded
/snow
tires
have
higher
traction
qualities
under
most


weather
conditions.
• If
studded
/snow
tires
are
installed
on
the
front
axle
of
any

vehicle,
studded
/snow
tires
must
also
be
installed
on
the
rear

axle.
DO
NOT
apply
studded
/snow
tires
only
to
the
front
axle.
•If
studded
/snow
tires
are
installed
on
the
rear
axle
of
any

vehicle,
it
is
strongly
recommended
that
they
should
also
be
installed

on
the
front
axle.
Only
if
studded
/snow
tires
are
installed
on
all

wheel
positions
of
a
vehicle
will
optimum
handling
characteristics
be

achieved.
WARNING!
Installing
only
two
studded
/snow
tires
on
the
front
axle
of

any
vehicle
(including
front-wheel-drive
vehicles)
without
studded

/snow
tires
on
the
rear
axle
can
cause
adverse
vehicle

handling
characteristics.
This
can
result
in
a
loss
of
vehicle
control,

which
could
cause
serious
personal
injury
or
death.
mNOTICE!
In some cases, the vehicle manufacturer may specifically advise against
replacing fewer than all four tires. Always check and follow the
recommendations in the vehicle Owner’s Manual. For 4WD and AWD
vehicles, even small differences in outside diameter may cause drivetrain
damage or mechanical malfunction.
REPLACING TWO TIRES
•When a pair of replacement tires is selected in the same size and
construction as those on the vehicle, the two newer tires must be
installed on the rear axle and must be of equal or higher speed rating
than the front tires. Generally, new tires with deeper tread will provide
better grip and evacuate water more effectively, which is important as
a driver approaches hydroplaning situations. Placing greater traction
on the rear axle on wet surfaces is necessary to prevent a possible
oversteer condition and loss of vehicle stability.
TOYO TIRES – LIMITED WARRANTY
238

•Follow

recommendations
in
the
vehicle
Owner ’s
Manual
for


tires,
studs,
and
chains.
• Consult your tire dealer, the Rubber Manufacturers Association web-
site
www.rma.org, or your state’s Department of Transportation
(DOT) for information regarding regulatory and seasonal restrictions
for stud usage.
• Also see the “Tire Mixing” section in this manual for more details.
• Toyo Tires recommends that snow tires be installed in matched sets of
four.
ADVERSE WEATHER DRIVING
Take special care when driving in adverse weather conditions.
•Rain and snow – Driving in rain or snow considerably reduces the
traction between your tires and the road surface. You must always
reduce your speed to allow additional stopping distance between you
and the vehicles ahead of you.
• Hydroplaning and wet weather driving – Hydroplaning occurs on wet
roads and refers to the loss of tire contact with the road due to the
build-up of water between the tire contact patch and the road surface.
Three main factors affect hydroplaning and, consequently, your tire
traction on wet roads:
1. Vehicle Speed – As speed increases, wet traction is considerably reduced.
2. Water Depth – The deeper the water, the sooner your tires will lose traction. Even thin water layers can create sufficient lubrication to
cause traction loss at low speeds, depending on road conditions.
3. Tire Tread Depth – As your tires wear down, their decreased ability to resist hydroplaning can result in a complete loss of traction and
vehicle control. You should always reduce your speed with consider-
ation for the traffic around you.
• Driving on ice and snow – Your all-season tires were designed to
provide higher levels of snow traction compared to non-all- season
tires. You have all-season tires if you find the letters “M&S” are molded
into the sidewall near the bead. These letters mean “Mud and Snow.”
Tires designed for use in severe snow conditions generally have tread
patterns, structure, and materials for giving superior performance.
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248

TYPICAL LIGHT TRUCK TIRE
UNIFORM TIRE QUALITY GRADING (UTQG)
The Uniform Tire Quality Grading (“UTQG”) standards are intended to
assist you in making an informed choice in your purchase of passenger
car tires by providing information indicating relative performance in the
areas of treadwear, wet stopping traction, and temperature resistance. All
passenger car tires must conform to federal safety requirements in
addition to these grades.
•Treadwear - The treadwear grade is a comparative rating based on the
wear rate of the tire tested under controlled conditions on a specified
government test track. For example, a tire graded 200 would wear
twice as long on the government course as a tire graded 100. It is
wrong to link treadwear grades with your projected tire mileage. The
relative performance of the tires depends upon the actual conditions of
TOYO TIRES – LIMITED WARRANTY
256

their use and may vary due to driving habits, service practices,
differences in road characteristics, and climate.
• Traction - The traction grades from highest to lowest are AA, A, B, and
C, and they represent the tire’s ability to stop on wet pavement as
measured under controlled conditions on specified government test
surfaces of asphalt and concrete.
m NOTICE!
The traction grade assigned to tires is based on locked braking (straight
ahead) traction tests and does not include cornering (turning) traction.
• Temperature - 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 temperatures
can cause the materials 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 that 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.
WARNING!
The temperature grade 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. This can cause an accident, which
could lead to serious personal injury or death.
• DOT Quality Grades - All passenger car tires must conform to federal
requirements in addition to these grades.
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257