2018 DODGE DURANGO SRT tire pressure

•High-speed driving should be left to trained professionals operating
under controlled conditions.
•No tire, regardless of its design or speed rating, has unlimited capacity
for speed, and a sudden tire failure can occur if its limits are exceeded.
See “Tire Speed Ratings,” the next section in this manual.
Refer to your vehicle owner ’s manual for any tire pressure recommen-
dations for high speed driving.
TIRE SPEED RATINGS
A tire bearing a letter “speed rating” designation indicates the tire’s
speed capability according to standardized laboratory tests. This speed
rating system is intended to permit comparison of the speed capabilities
of different tires. When replacing your tires, consult your vehicle owner ’s
manual and tire information placard for recommendations, if any,
concerning the use of speed rated tires.
•To avoid reducing the speed capability of the vehicle, replace a speed
rated tire only with another tire having at least the same speed rating.
It is the “top speed” of the “slowest” tire on the vehicle which limits
the vehicle’s top speed without tire failure.
•The tire’s speed rating is void if the tire is repaired, retreaded,
damaged, abused, or otherwise altered from its original condition.
Thereafter, it should be treated as a non-speed rated tire.
•Non-speed rated tires are usually for ordinary passenger car or light
truck service and not for high speed driving.
•For winter tires used in cold weather conditions, it is generally
acceptable to apply a tire with a lower speed rating than your original
tires; however, speed should be reduced accordingly. All winter tires
should be the same speed rating. Some vehicles have specific recom-
mendations regarding winter tire use; consult your vehicle owner ’s
manual and tire information placard. See “Winter Tires” in this
manual.
These speed ratings are based on standardized laboratory tests under
specific, controlled conditions. While these tests may relate to perfor-
mance on the road, real-world driving is rarely identical to any test
conditions. Your tire’s actual speed capability may be less than its rated
speed since it is affected by factors such as inflation pressure, load, tire
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condition (including damage), wear, vehicle condition (including align-
ment), driving conditions, and duration at which the speed is sustained.
Use the following chart to compare the speed ratings of tires.
Speed
SymbolSpeed Category*
mph km/h
M81130
Q99160
R 106 170
S 112 180
T 118 190
U 124 200
H 130 210
V 149 240
Z** >149 >240
W 168 270
Y 186 300
(Y)** >186
The tire’s speed rating designation appears on the tire sidewall with the
tire size. Examples:
P275/40ZR17 max > 149 mph (240 km/h)****
P275/40R17 93W max = 168 mph (270 km/h)
P275/40ZR17 93W max = 168 mph (270 km/h)
P275/40ZR17 93Y max = 186 mph (300 km/h)
P275/40ZR17 93(Y) max > 186 mph (300 km/h) ****
* In standardized laboratory tests that relate to highway speeds. Actual
tire speed and performance capability depend on factors such as inflation
pressure, load, tire condition, wear, and driving conditions.
** Any tire having a maximum speed capability above 149 mph
(240 km/h) may, at the tire manufacturer ’s discretion, include a “Z” in
the size designation (i.e. P275/40ZR17).
*** For tires having a maximum speed capability above 186 mph
(300 km/h), a “Z” must appear in the size designation and a “Y” marked
in brackets (as shown) in the service description.
**** Consult the tire manufacturer for maximum speed capability.
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TIRE SPINNING
WARNING!
Spinning a tire to remove a vehicle stuck in mud, ice, snow, or wet
grass can be dangerous. A tire spinning at a speedometer reading
above 35 mph (55 km/h) can in a matter of seconds reach a speed
capable of disintegrating a tire with explosive force. Under some
conditions, a tire may be spinning at a speed twice that shown on
the speedometer. This could cause serious personal injury or death
to a bystander or passenger. Never spin a tire above a speedometer
reading of 35 mph (55 km/h).
RADIAL TIRE ROTATION
The purpose of tire rotation is to minimize irregular or uneven wear
caused by maintaining a tire in one rotation direction and one position
over an extended period. Rotate tires as recommended by the vehicle
manufacturer or every 5,000 miles. Individual tire pressures must be
checked after rotation and adjusted to the vehicle manufacturer ’s recom-
mendation for the tire’s new location on the vehicle. Vehicle alignment
should be checked if irregular wear is evident.
For vehicles with a “temporary use” spare tire, follow the vehicle
manufacturer ’s recommended pattern for rotation, or, if not provided, the
following may be used:
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If your spare is the same size, load rating, and type of tire as your road
tires, it should be included in the tire rotation process. For vehicles with
a “full-size” spare, the following rotation patterns may be used:
NOTE:
•Never include a “temporary use” spare tire in the rotation.
•Tires with directional tread patterns must be rotated so the direction of
revolution does not change; this may require demounting/mounting
the tires.
•Special attention should be given if your vehicle is equipped with a
Tire Pressure Monitoring System (TPMS). Rotation of your tires may
affect the system; consult your vehicle owner ’s manual or a qualified
tire service professional.
•Some vehicles may have different size tires/wheels on front and rear
which would restrict rotation. Always check and follow the vehicle
manufacturer ’s rotation recommendation.
•To use a full-size spare in the rotation pattern on vehicles with dual
rear wheels, consult your vehicle owner ’s manual for the recom-
mended procedures or consult the vehicle manufacturer.
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YOUR SPARE TIRE
Consult your vehicle owner ’s manual for proper application of your
spare tire. Your car may be equipped with a “temporary use” spare tire;
this spare may differ in size and construction from the other tires on your
vehicle.
WARNING!
Check inflation pressure before use. Failure to have proper inflation
pressure when using your spare tire can result in serious personal
injury or death. See Tire Inflation Pressure in this manual.
WARNING!
Mounting a “temporary use” tire on a wheel which is not
specifically designed for it, or placing another type tire on a wheel
designated for temporary use can be dangerous. Your vehicle’s
handling characteristics can be seriously affected. You could have an
accident resulting in serious personal injury or death. Consult your
vehicle owner ’s manual for proper application of your “temporary
use” spare tire.
The spare tire in your vehicle is intended to be used as a spare when
needed. The spare tire carrier is not intended to be used for long term
storage, except for “temporary use” tires. If your spare is the same size,
load rating, and type of tire as your road tires, it should be included in the
tire rotation process; see “Radial Tire Rotation” in this manual for more
information.
The spare should be included in regular tire inspections and inflation
pressure checks. In addition, it should be replaced 10 years after date of
manufacture, regardless of condition or tread depth. For more informa-
tion, see the “Tire Damage, Inspection and Service Life” in this manual.
TIRE STORAGE
Tires should be stored indoors in a cool, dry place where water cannot
collect inside them. Tires should be placed away from electric
generators/motors and sources of heat such as hot pipes. Storage
surfaces should be clean and free of grease, gasoline or other substances
which can deteriorate the rubber.
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RFT TIRES WITH RUN-FLAT TECHNOLOGY
If your vehicle is equipped with
Bridgestone or Firestone brand RFT
tires, this chapter presents specific
maintenance and safety issues asso-
ciated with these tires that are in addition to those covered elsewhere in
this manual.
What is RFT? Run-Flat Technology tires are extraordinary tires that
utilize specially designed components to temporarily support your
vehicle in the event of inflation pressure loss, such as from a puncture.
This gives you the ability to drive to a convenient and safe location to
change your tire (if equipped with a spare) or have it inspected for
possible repair or replacement.
Naturally, certain run-flat and low pressure operating limitations apply,
which varies according to the specific self-supporting tire design. Like all
tires, during normal operation, they must be properly inflated and
maintained. Regardless of the design or quality, no tire is indestructible.
RFT—How to Identify:Bridgestone and Firestone brand tires are
marked on the sidewalls, near the wheel, with the RFT logo (shown
above).
RFT INFLATION PRESSURE
Like other tires, RFT tires need proper inflation pressure maintenance for
safe operation and to achieve the maximum tire life and performance.
Check inflation pressures monthly and before long trips or carrying extra
weight. Use an accurate tire gauge and check pressures when the tires are
cold. Follow the vehicle manufacturer ’s recommendation for inflation
pressure settings as indicated on the vehicle tire information placard
and/or in the vehicle owner ’s manual. Do not forget the spare, if
applicable. See “Tire Inflation Pressure” in this manual.
TIRE PRESSURE MONITORING SYSTEM (TPMS)
A functioning tire pressure monitoring system (TPMS) must be used with
your RFT tires. Because these tires ride so well even without inflation
pressure, the TPMS may be necessary to alert you of an inflation pressure
loss condition. When alerted, follow the instructions in your vehicle
owner ’s manual and see “Run-Flat or Low Tire Pressure Operation,” the
following section in this manual.
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The vehicle or TPMS manufacturer may advise checking the TPMS
regularly to confirm it is in working order. In addition, a new pressure
sensor, certain components, or reprogramming may be necessary when a
tire is serviced. Consult your vehicle owner ’s manual, vehicle manufac-
turer, or a Bridgestone Firestone Run-Flat Certified Retailer for questions
regarding TPMS operation and service.
RUN-FLAT OR LOW TIRE PRESSURE OPERATION
WARNING!
Serious personal injury or death may result from a tire failure or
accident due to improper run-flat or low tire pressure operation.
Read and follow the instructions below, and the other maintenance
and safety recommendations elsewhere in this manual.
General Instructions
The Tire Pressure Monitoring System (TPMS) required in your vehicle
may have different methods of alerting you when your tire has lost
inflation pressure. The international standard for the definition of run-flat
operation is pressure at or below 10 psi (70 kPa); however, some vehicle
manufacturers may have established a different pressure limit. Consult
your vehicle owner ’s manual for the details of your TPMS. Once the
TPMS has indicated that a tire has reduced inflation pressure, the run-flat
mode of operation has commenced. During this phase of operation,
please follow these instructions:
•Reduce speed as much as safely and reasonably possible; do not
exceed 50 mph (80 km/h).The greater the speed, the less distance the
tire can travel.
•Avoid abrupt or aggressive acceleration, braking, or cornering ma-
neuvers as much as safely and reasonably possible.Pot holes and
other road hazards should be avoided. Careful driving limits potential
damage to the tire, wheel, and vehicle.
•Proceed to a safe and convenient location for tire service as soon as
possible.Take note of your mileage; your operation distance is limited.
SeeDistance—How Far You Can Drive,” the next section in this
manual.
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•If an unusual vibration or vehicle handling difficulty arises, stop
driving as soon as safely and reasonably possible.The tire may be
about to suddenly fail. Release the accelerator and gradually reduce
speed. The tire will need to be replaced before proceeding.
•If towing a trailer, stop driving as soon as safely and reasonably
possible. In this condition, it is potentially dangerous to operate a
vehicle/trailer combination.If possible, disconnect the trailer and
proceed as noted above. Do not continue to tow any trailer until proper
tire service or replacement has been performed.
•Do not touch a tire recently run-low or run-flat (it may be very hot).
Allow the tire to cool before handling.
DISTANCE—HOW FAR YOU CAN DRIVE
Factors affecting run-flat or low tire pressure operating distance include
vehicle speed, load, and maneuvering; the amount of inflation pressure
loss; the extent of any tire damage; and ambient temperature.
The tire may be marked on the sidewall with run-flat or low tire pressure
operating speed and/or distance limitations, which vary by tire design
and vehicle application (consult your vehicle owner ’s manual). By
international standard, RFT tires have a baseline limitation in run-flat
mode of the following:
Maximum Speed: 50 mph (80 km/h)
Maximum Distance: 50 miles (80 km)
NOTE:
•Maximum distance values are determined under controlled condi-
tions, which may vary in actual use.
•Your mileage capability may be less, or more, depending on your
specific operating conditions.
•If in doubt, do not exceed the 50 mile (80 km) limitation.
•Seek tire service as soon as possible to minimize tire damage.
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