2021 DODGE DURANGO air condition

BFGOODRICH® TIRES
34
Anytime you see any damage to your tires or wheels, replace with the
spare at once and immediately visit any BFGoodrich® tire retailer.
IMPACT DAMAGE
A tire impacted by a road hazard (curb, pothole, debris) may be
da
maged but not have visible signs of damage on its surface. A tire
damaged by an impact may sustain a sudden failure a day, week, or
even months later. You may not recall hitting an object that damaged
or injured your tires. Air loss, unusual tire wear, localized wear or
vibrations can also be signs of internal tire damage.
If you suspect any damage to your tire or wheel from an impact with
a
curb, pothole, debris on the road or any other road hazard, or if you
feel or hear any unusual vibration, replace with a properly inflated
spare at once and immediately visit any qualified tire technician.
INSPECTION
When inspecting your tires, including the spare, check the air
pr
essures. If the pressure check indicates that one of your tires has lost
pressure of two pounds or more, look for signs of penetration, valve
leakage or wheel damage that may account for the air loss.
Always look for bulges, cracks, cuts, penetrations and abnormal tire
we
ar, particularly on the edges of the tire tread, which may be
caused by misalignment or underinflation. If any such damage is
found, the tire must be inspected by your BFGoodrich® tire retailer
at once. Use of a damaged tire could result in tire failure and an
accident.
All tires will wear out faster when subjected to high speeds as well as
ha
rd cornering, rapid starts, sudden stops, frequent driving on roads
which are in poor condition, and off road use. Roads with holes and
rocks or other objects can damage tires and cause misalignment of
your vehicle. When driving on such roads, drive carefully and slowly,
and before driving again at normal or highway speeds, examine your
tires for any damage, such as cuts, bulges, penetrations, unusual wear
patterns, etc.
WEAR BARS
BFGoodrich® tires contain “Wear-Bars” in the grooves of the tire tread
wh
ich show up when only 2/32 nds of an inch (1.6 mm) of tread is
re

maining. At this stage, your tires must be replaced. Tires worn
beyond this stage are extremely dangerous.

BFGOODRICH® TIRES
40
road. If a tire is mounted by error on the wrong-sized rim, do not
remount it on the proper rim — scrap it. It may have been damaged
internally (which is not externally visible) by having been
dangerously stretched and could fail on the highway.
Old valves may leak. When new tubeless tires are mounted, have
ne
w valves of the correct type installed. Tubeless tires must only be
mounted on wheels designed for tubeless tires i.e., wheels which
have safety humps or ledges.
It is recommended that you have your tires and wheels balanced. Tires
an
d wheels which are not balanced may cause steering difficulties, a
bumpy ride, and irregular tire wear.
Be sure that all your valves have suitable valve caps. The valve cap
is
the primary seal against air loss.
SERVICE LIFE FOR PASSENGER CAR AND LIGHT TRUCK TIRES
IN
CLUDING SPARE TIRES
The following recommendation applies to passenger car and light
tr
uck tires. Tires are composed of various types of material and rubber
compounds, having performance properties essential to the proper
functioning of the tire itself. These component properties evolve over
time. For each tire, this evolution depends upon many factors such as
weather, storage conditions, and conditions of use including load,
speed, inflation pressure, maintenance etc. to which the tire is
subjected throughout its life. This service-related evolution varies
widely so that accurately predicting the serviceable life of any specific
tire in advance is not possible.
In addition to regular inspections and inflation pressure maintenance
by
consumers, it is recommended to have passenger car and light
truck tires, including spare tires, inspected regularly by a qualified tire
specialist, such as a tire dealer, who will assess the tire’s suitability for
continued service. Tires which have been in use for five years or more
should continue to be inspected by a specialist at least annually.
Consumers are strongly encouraged to be aware not only of their tires’
vi
sual condition and inflation pressure but also of any change in
dynamic performance such as increased air loss, noise or vibration,
which could be an indication that the tires need to be removed from
service to prevent tire failure.

BRIDGESTONE® - FIRESTONE®
60
Additional notes about tire repairs:
• Not all punctured or damaged tires can be properly repaired; conse -
q
uently, they must be replaced. NEVER repair a tire with any of the
fo
llowing conditions:
• Wear to the tire’s built-in tread wear indicators or to 2/32 inch
(1

.6 mm) remaining tread depth in any area of the tread.
• With a puncture larger than 1/4
inch (6 mm).
• With a puncture or other damage outside the repairable tread
a
rea (as shown in the graphic).
• With a pre-existing, improper repair.
•

Any tire repair done without removing the tire from the wheel is
i
mproper. The tire must be demounted from the wheel and the inte -
rior inspected for damage that may not be evident on the exterior of
th
e tire.

BRIDGESTONE® - FIRESTONE®
61
• Using only a plug/stem, or using only a patch, is not a safe or proper
repair. A patch must be applied to the interior of the tire and the
puncture hole must be filled with a suitable plug/stem filler to
prevent inflation pressure loss and contamination of the steel belts
and other plies.
• NEVER substitute a tube for a proper repair or to remedy an
i
mproper repair.
• Tubes, like tires, should only be repaired by a qualified tire service
p
rofessional.
• Some vehicle manufacturers do not recommend using repaired
t
ires. Consult your vehicle Owner’s Manual or contact the vehicle
manufacturer before operating a repaired tire on your vehicle.
ASK how your tire will be repaired. ALWAYS insist on a proper tire
re
pair.
Emergency/Temporary Sealant or Filler Repairs: A
n emergency/
temporary sealant or filler injected into the tire, such as by aerosol can
or injection/squeeze-tube, is not a proper repair and voids the tire
Limited Warranty. A tire injected with such sealant/filler must be
replaced by a qualified tire service professional as soon as possible.
Speed Rating: T
he 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.
See “Tire Speed Ratings” in this manual.
Improper repair voids the tire Limited Warranty. S
ee “Limited
Warranty” in this manual.
RFT (Run-Flat Technology) Tires: I
n addition to the above, there are
recommendations specific to the repair of RFT tires; see “RFT Tires
with Run-Flat Technology” in this manual.
WARNING!
Tell the tire service professional if you have used an aerosol fixer
to
inflate/seal the tire. Aerosol fixers could contain a highly
volatile gas. Always remove the valve core outdoors, away from
sources of excessive heat, flame, or sparks and completely deflate
the tire before removing it from the wheel.

BRIDGESTONE® - FIRESTONE®
65
• High-speed driving should be left to trained professionals operating
under controlled conditions.
• No tire, regardless of its design or speed rating, has unlimited
c
apacity 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
re
commendations for high speed driving.
TIRE SPEED RATINGS
A tire bearing a letter “speed rating” designation indicates the tire’s
sp
eed 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
s
peed 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,
d
amaged, 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
t
ruck service and not for high speed driving.
• For winter tires used in cold weather conditions, it is generally
a
cceptable to apply a tire with a lower speed rating than your orig -
inal tires; however, speed should be reduced accordingly. All winter
ti
res should be the same speed rating. Some vehicles have specific
recommendations 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
sp
ecific, controlled conditions. While these tests may relate to
performance 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 condition (including damage), wear, vehicle condition

BRIDGESTONE® - FIRESTONE®
71
RFT TIRES WITH RUN-FLAT TECHNOLOGY
If your vehicle is equipped with
Bridgestone® or Firestone® brand
RF
T tires, this chapter presents
specific maintenance and safety issues
associated 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
ut
ilize 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
ap
ply, 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: B
ridgestone® 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
fo
r 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
wi
th your Run Flat tires. 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.

BRIDGESTONE® - FIRESTONE®
74
SPECIAL SERVICE AND REPAIR ISSUES
Run-Flat Certified Retailers
Because of the advanced technology and design of Run-Flat tires and
th
e required Tire Pressure Monitoring Systems (TPMS), Bridgestone®
Firestone® Run-Flat Certified Retailers are specially trained to sell and
service RFT tires.
Run-Flat Certified Retailers have the necessary equipment and are
sp
ecially trained to properly mount and demount RFT tires and to
handle TPMS devices. Conventional mounting equipment may
irreparably damage RFT tires and an improper repair is unsafe and
will void the Limited Warranty. Accordingly, it is important to go to
a Bridgestone® Firestone® Run-Flat Certified Retailer for tire
maintenance and replacement.
Call toll-free 1-877-BFS-4RFT or, 87
7-237-4738 or visit

www.bridgestonetire.com
to locate the nearest Bridgestone®
Firestone® Run-Flat Certified Retailer.
Inspection after Run-Flat or Low Pressure Operation
Following run-flat or low tire pressure operation, or in the event of
an
y other tire damage or unusual condition, it is very important to
obtain a proper and complete tire evaluation as soon as possible.
Rotation
Follow the vehicle manufacturer’s recommendations, or rotate every
5,
000 miles per the recommendations in this manual (see “Radial Tire
Ro

tation”). In some cases, TPMS devices require reprogramming with
each tire rotation.
RFT Tire Replacement
Do not replace or mix RFT tires with conventional tires, unless on an
em
ergency/temporary basis. Conventional tires do not have run-flat
capability and the handling characteristics of the vehicle with these
tires may be different. If a conventional tire is used on an emergency/
temporary basis, verify that its size, load capacity, inflation pressure,
and speed rating specifications meet the requirements of the vehicle.
Replace any conventional tire with the proper RFT tire as soon as
possible.

BRIDGESTONE® - FIRESTONE®
75
RFT Tire Damage and Repair
No tire, regardless of its design or quality is indestructible. RFT tires
ca
n be ultimately rendered unusable due to a puncture or other road
hazard as well as from improper run-flat or low tire pressure
operation. Some punctures may be repaired under certain restrictions
and prescribed procedures.
When driven flat or with low pressure, factors affecting reparability
in
clude vehicle speed, load, and maneuvering; the amount of inflation
pressure loss; and ambient temperature. In any situation, the extent
and location of direct damage from a puncturing object or other road
hazard are also critical factors.
RFT tires are not repairable in any of the following situations:

• If the tire was operated with inflation pressure less than 15 psi (100 kPa).

•

Abrasion or other damage is present on the exterior tread, sidewall
o
r bead areas.
• Abrasion, wrinkling, or separation is present on the tire interior.
•
Any condition or damage is present that disqualifies repair of a
c
onventional tire.
Run-Flat Certified Retailers will fully inspect your tire, inside and out,
to
determine if the tire can be repaired. Tire damage is not always
visible from the outside and the tire must be removed from the wheel
for a complete inspection. For more information, see the section “Tire
Repairs” in this manual.

NOTE:

Some vehicle manufacturers do not recommend using repaired tires.
Co
nsult your vehicle Owner’s Manual or contact the vehicle manufac -
turer before operating a repaired tire on your vehicle.