BRIDGESTONE® - FIRESTONE®
63
HIGH PERFORMANCE, LOW ASPECT RATIO TIRES
Many new vehicles come equipped from the factory with high
pe
rformance and/or low aspect ratio tires. Generally, these tires
provide increased vehicle handling capability, but may also have
numerous engineering performance trade-offs associated with their
designs.
• Low aspect ratio tires, with reduced sidewall height, may be more
s
usceptible to damage from potholes, road hazards, and other
objects such as curbs. This is true for the wheels as well. Therefore,
as with all other tires, it is important to drive with care and maintain
proper inflation pressure and load conditions. See “Tire Inflation
Pressure” and “Tire Damage, Inspection and Service Life” in this
manual.
• Some sports cars and other handling performance enhanced vehi -
c
les, including sedans and light trucks/SUVs, may be originally
eq
uipped with high performance tires that are more optimized for
warmer weather use. Colder, winter weather traction may be
reduced for these types of tires. Winter tires may be recommended
by the vehicle manufacturer for colder weather application. See
“Winter Tires,” the next section in this manual.
• High performance tires may also wear more quickly, ride more
f
irmly, and produce more noise during operation.
Consult your vehicle Owner’s Manual and tire information placard, or
a
qualified tire service professional, for more information and
specifics regarding these types of tires.
WINTER TIRES
In Winter driving conditions, vehicle control and safe operation under
b r
aking and cornering is especially dependent upon the rear tires. For
this reason, Winter tires are best applied to all wheel positions. Some
WARNING!
Winter driving presents special challenges for vehicle mobility.
Th
e use of winter tires (including studs and chains)—while
improving traction performance in snow and ice—requires special
care with regard to acceleration, braking, cornering, and speed. It
is important to drive with care, not only on snow and ice, but on
dry and wet roads as well.
BRIDGESTONE® - FIRESTONE®
64
vehicles have specific recommendations regarding Winter tire use;
consult your vehicle Owner’s Manual and tire information placard.
• If Winter tires are to be applied to the front axle of any vehicle, they
m
ust also be applied to the rear axle for safe operation. This applies
to all passenger cars and light trucks, including Front Wheel Drive
(FWD), Four Wheel Drive (4WD) and All Wheel Drive (AWD) vehi -
cles.
• If Winter tires are to be applied to the rear axle of any vehicle, it is
r
ecommended that they also be installed on the front axle.
• It is generally acceptable to apply a tire with a lower speed rating
t
han your original tires for use in Winter weather conditions;
however, speed should be reduced accordingly. All Winter tires
should be the same speed rating. See “Tire Speed Ratings” in this
manual.
• Winter tires used in warmer, Summer weather conditions may wear
m
ore rapidly.
• Studded Winter tires follow the same recommendations as above;
c
onsult a qualified tire service professional for information
regarding any seasonal restrictions.
TIRE MIXING
HIGH SPEED DRIVING
• R egardless of the speed and handling capabilities of your car and its
t
ires, a loss of vehicle control can result from exceeding the
maximum speed allowed by law or warranted by traffic, weather,
vehicle, or road conditions.
WARNING!
Driving your vehicle with an improper mix of tires is dangerous.
Yo
ur 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 and a qualified tire
service professional for proper tire replacement.
WARNING!
Driving at high speed is dangerous and can cause a vehicle
ac
cident, including serious personal injury or death.
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67
TIRE SPINNING
RADIAL TIRE ROTATION
The purpose of tire rotation is to minimize irregular or uneven wear
c a
used 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
ch
ecked after rotation and adjusted to the vehicle manufacturer’s
recommendation 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
ma
nufacturer’s recommended pattern for rotation, or, if not provided,
the following may be used:
WARNING!
Spinning a tire to remove a vehicle stuck in mud, ice, snow, or wet
gr
ass 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
ca
pable 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).
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69
YOUR SPARE TIRE
Consult your vehicle Owner’s Manual for proper application of your
sp
are 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.
The spare tire in your vehicle is intended to be used as a spare when
n e
eded. 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
pr
essure checks. In addition, it should be replaced 10 years after date
of manufacture, regardless of condition or tread depth. For more
information, 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
co
llect 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.
WARNING!
Check inflation pressure before use. Failure to have proper
in
flation 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
sp
ecifically 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.
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70
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. For more information, see
“Your Spare Tire” and “Radial Tire Rotation” in this manual.
TIRE SERVICE CUSTOMER SATISFACTION
Normal tire maintenance and Limited Warranty services are available
at
locations across the US and Canada. For more information, visit us
on the internet at
www.bridgestonetire.com
, or please call the
Technical Service Department:
US: 800-356-4644 or Canada: 800-267-1318
A
dditional information on the care and service of automobile and
li
ght truck tires is available from the following organizations:
U.S. Tire Manufacturers Association 1400 K Street, N.W. Washington,
DC
20005-2403
https://www.ustires.org
Rubber Association of Canada 2000 Argentia Road, Plaza 4, Suite 250
Mi
ssissauga, Ontario L5N 1W1
https://www.tracanada.ca
TIRE REGISTRATION
Registration of your tires is an important safety precaution since it
en
ables the manufacturer to notify you in the event of a recall. When
you purchase replacement tires, the retailer will provide a registration
card on which the tire identification numbers have been recorded; fill
in your name and address on the card and mail it promptly. Some
retailers may submit the registration for you. You do not need to
register tires which come as original equipment on new vehicles—the
vehicle and tire manufacturers handle that for you.
WARNING!
Improper storage can damage your tires in ways that may not be
vi
sible and can lead to a failure resulting in serious personal
injury or death.
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72
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
manufacturer, or a Bridgestone® Firestone® Run-Flat Certified
Retailer for questions regarding TPMS operation and service.
RUN-FLAT OR LOW TIRE PRESSURE OPERATION
General Instructions
The Tire Pressure Monitoring System (TPMS) required in your vehicle
m a
y 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
e
xceed 50 mph (80 km/h).The greater the speed, the less distance
t
he tire can travel.
• Avoid abrupt or aggressive acceleration, braking, or cornering
m
aneuvers 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
a
s possible. Take note of your mileage; your operation distance is
limited. See "Distance — How Far You Can Drive,” the next section
in this manual.
WARNING!
Serious personal injury or death may result from a tire failure or
ac
cident 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.
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79
Temperature
The temperature grades are A (the highest), B, and C, representing the
ti
re’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.109. 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
in
flated and not overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination, can cause
heat buildup and a possible tire failure.
BRIDGESTONE® - FIRESTONE®
81
•Improper use or operation, including, without limitation:
Improper inflation pressure, overloading, tire/wheel spinning,
use of an improper wheel, tire chain damage, misuse, misappli -
cation, negligence, tire alteration, or for racing or competition
pu
rposes.
• Insufficient or improper maintenance,
including, without
limitation: Failure to rotate tires as recommended in this manual,
wheel misalignment, worn suspension components, improper
tire mounting or demounting, tire/wheel assembly imbalance,
or other vehicle conditions, defects, or characteristics.
• Contamination or degradation
by petroleum products or other
chemicals, fire or other externally generated heat, or water or
other material trapped inside the tire during mounting or infla -
tion.
• Improper repair.
Improper repair voids this Limited Warranty
• For RFT tires only, improper run-flat or low tire pressure oper -
a
tion, including, without limitation: Exceeding speed, distance,
o
r other run-flat/lowpressure operation limitations.
2. Rapid tread wear or wear-out. Original equipment tires have no
m
ileage warranty.
3. Weather/ozone cracking after 4 years from date of tire manufac -
t
ure.
4. Ride disturbance or vibration after 1/32 inch (0.8mm) of tread
we
ar use.
5. Tires with sealant, balance, or other filler material that was not
o
riginally applied or inserted by the tire manufacturer.
6. Tires used in commercial service.
7
. Tires purchased and normally used outside the United States and
C
anada.
8. The cost of applicable federal, state, and local taxes.
9
. Failure to follow any of the safety and maintenance recommenda -
t
ions or warnings contained in this manual.
This Limited Warranty is in addition to and/or may be limited by any
ot
her applicable written warranty you may have received concerning
special tires or situations.