Ford Bronco Sport (2022 year). Manual in english — page 20

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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Wheels and Tires

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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Wheels and Tires

*

Traction:

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:

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.

M.

Maximum Inflation

Pressure:

Indicates the tire

manufacturers' maximum
permissible pressure or the
pressure at which the maximum
load can be carried by the tire. This
pressure is normally higher than
the vehicle manufacturer's
recommended cold inflation
pressure which can be 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 which is
located on the B-Pillar or the edge
of the driver’s door. The cold
inflation pressure should never be
set lower than the recommended
pressure on the vehicle label.

The tire suppliers may have
additional markings, notes or
warnings such as standard load
or radial tubeless.

Additional Information
Contained on the Tire Sidewall
for LT Type Tires

Note:

Tire Quality Grades do not

apply to this type of tire.

A

B

C

B

D

E142544

LT type tires have some additional
information beyond those of P
type tires; these differences are
described below.

A.

LT:

Indicates a tire, designated

by the Tire and Rim Association,
that is intended for service on light
trucks.

B.

Load Range and Load

Inflation Limits:

Indicates the

tire's load-carrying capabilities
and its inflation limits.

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Wheels and Tires

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.

A

B

C

D

E

E142545

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.

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Wheels and Tires

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.

Recommended Tire Pressures
and Inflating Your Tires

Safe operation of your vehicle
requires that your tires are
properly inflated. Remember that
a tire can lose up to half of its air
pressure without appearing flat.
Every day before you drive, check
your tires. If one looks lower than
the others, use a tire gauge to
check the pressure of all tires and
adjust if required.

At least once a month and before
long trips, inspect each tire and
check the tire pressure with a tire
gauge (including spare, if
equipped). Inflate all tires to the
inflation pressure recommended
by the manufacturer.

WARNING:

Under-inflation

is the most common cause of
tire failures and may result in
severe tire cracking, tread
separation or blowout, with
unexpected loss of vehicle

control and increased risk of
injury. Under-inflation increases
sidewall flexing and rolling
resistance, resulting in heat
buildup and internal damage to
the tire. It also may result in
unnecessary tire stress, irregular
wear, loss of vehicle control and
accidents. A tire can lose up to
half of its air pressure and not
appear to be flat!

You are strongly urged to buy a
reliable tire pressure gauge, as
automatic service station gauges
may be inaccurate. We
recommend the use of a digital or
dial-type tire pressure gauge
rather than a stick-type tire
pressure gauge. Use the
recommended cold inflation
pressure for optimum tire
performance and wear.
Under-inflation or over-inflation
may cause uneven treadwear
patterns.

Always inflate your tires to the
recommended inflation pressure
even if it is less than the maximum
inflation pressure information
found on the tire. You will find a
Tire Label containing the
manufactures recommended tire
inflation pressure by the tire size
and other important information
located on the B-Pillar or the edge
of the driver’s door.

317

Wheels and Tires

The recommended tire inflation
pressure is also 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 on the B-pillar, or on
the edge of the driver’s door.

Failure to follow the tire pressure
recommendations can cause
uneven treadwear patterns and
adversely affect the way your
vehicle handles.

Inspecting Your Tires and
Wheel Valve Stems

Periodically inspect the tire treads
for uneven or excessive wear and
remove objects such as stones,
nails or glass that may be wedged
in the tread grooves. Check the tire
and valve stems for holes, cracks,
or cuts that may permit air
leakage and repair or replace the
tire and replace the valve stem.
Inspect the tire sidewalls for
cracking, cuts, bruises and other
signs of damage or excessive
wear. If internal damage to the tire
is suspected, have the tire
demounted and inspected in case
it needs to be repaired or replaced.
For your safety, tires that are
damaged or show signs of
excessive wear should not be used
because they are more likely to
blow out or fail.

Improper or inadequate vehicle
maintenance can cause tires to
wear abnormally. Inspect all your
tires, including the spare,
frequently, and replace them if
one or more of the following
conditions exist:

Tire Wear

E142546

When the tread is worn down to
one sixteenth of an inch (2 mm),
tires must be replaced to help
prevent your vehicle from skidding
and hydroplaning. Built-in
treadwear indicators, or wear bars,
which look like narrow strips of
smooth rubber across the tread
will appear on the tire when the
tread is worn down to one
sixteenth of an inch (2 mm).

When the tire tread wears down
to the same height as these wear
bars, the tire is worn out and must
be replaced.

318

Wheels and Tires

Damage

Periodically inspect the tire treads
and sidewalls for damage (such
as bulges in the tread or sidewalls,
cracks in the tread groove and
separation in the tread or
sidewall). If damage is observed
or suspected, have the tire
inspected by a tire professional.
Tires can be damaged during
off-road use, so inspection after
off-road use is also
recommended.

Age

WARNING:

Tires degrade

over time depending on many
factors such as weather, storage
conditions, and conditions of use
(load, speed, inflation pressure)
the tires experience throughout
their lives.
In general, tires should be
replaced after six years
regardless of tread wear.
However, heat caused by hot
climates or frequent high loading
conditions can accelerate the
aging process and may require
tires to be replaced more
frequently.
You should replace your spare
tire when you replace the road
tires or after six years due to
aging even if it has not been
used.

U.S. DOT Tire Identification
Number

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.

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.

Tire Replacement
Requirements

Your vehicle is equipped with tires
designed to provide a safe ride
and handling capability.

319

Wheels and Tires

WARNING:

Only use

replacement tires and wheels
that are the same size, load
index, speed rating and type
(such as P-metric versus
LT-metric or all-season versus
all-terrain) as those originally
provided by Ford. The
recommended tire and wheel
size may be found on either 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 the
Tire Label which is located on
the B-Pillar or edge of the
driver's door. If this information
is not found on these labels, then
you should contact your
authorized dealer as soon as
possible. Use of any tire or wheel
not recommended by Ford can
affect the safety and
performance of your vehicle,
which could result in an
increased risk of loss of vehicle
control, vehicle rollover, personal
injury and death.

WARNING:

To reduce the

risk of serious injury, when
mounting replacement tires and
wheels, you should not exceed
the maximum pressure indicated
on the sidewall of the tire to set
the beads without additional
precautions listed below. If the
beads do not seat at the
maximum pressure indicated,
re-lubricate and try again.

WARNING:

For a mounting

pressure more than 20 psi
(1.38 bar) greater than the
maximum pressure, a Ford
dealer or other tire service
professional should do the
mounting.

WARNING:

Always inflate

steel carcass tires with a remote
air fill with the person inflating
standing at a minimum of 12 ft
(3.66 m) away from the wheel
and tire assembly.

WARNING:

When inflating

the tire for mounting pressures
up to 20 psi (1.38 bar) greater
than the maximum pressure on
the tire sidewall, the following
precautions must be taken to
protect the person mounting the
tire:

•

Make sure that you have the
correct tire and wheel size.

•

Lubricate the tire bead and
wheel bead seat area again.

320

Wheels and Tires

•

Stand at a minimum of 12 ft
(3.66 m) away from the wheel
and tire assembly.

•

Use both eye and ear
protection.

Important:

Remember to replace

the wheel valve stems when the
road tires are replaced on your
vehicle.

It is recommended that the two
front tires or two rear tires
generally be replaced as a pair.

The tire pressure sensors mounted
in the wheels (originally installed
on your vehicle) are not designed
to be used in aftermarket wheels.

The use of wheels or tires not
recommended may affect the
operation of your tire pressure
monitoring system.

If the tire pressure monitoring
system indicator is flashing, your
system is malfunctioning. Your
replacement tire might be
incompatible with your tire
pressure monitoring system, or
some component of the system
may be damaged.

Safety Practices

WARNING:

If your vehicle

is stuck in snow, mud or sand, do
not rapidly spin the tires;
spinning the tires can tear the
tire and cause an explosion. A
tire can explode in as little as
three to five seconds.

WARNING:

Do not spin the

wheels at over 34 mph
(55 km/h). The tires may fail and
injure a passenger or bystander.

Driving habits have a great deal
to do with your tire mileage and
safety.

*Observe posted speed limits

*Avoid fast starts, stops and turns
*Avoid potholes and objects on
the road

*Do not run over curbs or hit the
tire against a curb when parking

Highway Hazards

No matter how carefully you drive,

there is always the possibility that
you may eventually have a flat tire
on the highway. Drive slowly to the
closest safe area out of traffic.
This may further damage the flat
tire, but your safety is more
important.

If you feel a sudden vibration or
ride disturbance while driving, or
you suspect your tire or vehicle
has been damaged, immediately
reduce your speed. Drive with
caution until you can safely pull
off the road. Stop and inspect the
tires for damage. If a tire is
under-inflated or damaged,
deflate it, remove wheel and

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Wheels and Tires

replace it with your spare tire and
wheel. If you cannot detect a
cause, have the vehicle towed to
the nearest repair facility or tire
dealer to have the vehicle
inspected.

Tire and Wheel Alignment

A bad jolt from hitting a curb or
pothole can cause the front end
of your vehicle to become
misaligned or cause damage to
your tires. If your vehicle seems to
pull to one side when you are
driving, the wheels may be out of
alignment. Have an authorized
dealer check the wheel alignment
periodically.

Wheel misalignment in the front
or the rear can cause uneven and
rapid treadwear of your tires and
should be corrected by an
authorized dealer. Front-wheel
drive vehicles and those with an
independent rear suspension (if
equipped) may require alignment
of all four wheels.

The tires should also be balanced
periodically. An unbalanced tire
and wheel assembly may result in
irregular tire wear.

Tire Rotation

Note:

If your tires show uneven

wear, ask an authorized dealer to
check for and correct any wheel
misalignment, tire imbalance or
mechanical problem involved
before tire rotation.

Note:

Your vehicle may be

equipped with a dissimilar spare
wheel and tire assembly. A
dissimilar spare wheel and tire
assembly is defined as a spare
wheel and tire assembly that is
different in brand, size or
appearance from the road tires and
wheels. If you have a dissimilar
spare wheel and tire assembly, it is
intended for temporary use only
and should not be used in a tire
rotation.

Note:

After having your tires

rotated, inflation pressure must be
checked and adjusted to the
vehicle requirements.

Rotating your tires at the
recommended interval will help
your tires wear more evenly,
providing better tire performance
and longer tire life. Sometimes
irregular tire wear can be
corrected by rotating the tires.

Tire Rotation Diagram

E142547

322

Wheels and Tires

USING SNOW CHAINS

WARNING:

Do not exceed 30 mph

(50 km/h). Failure to follow this
instruction could result in the loss of
control of your vehicle, personal injury or
death.

WARNING:

Do not use snow chains

on snow-free roads.

WARNING:

Only fit snow chains to

specified tires.

WARNING:

If your vehicle is fitted

with wheel trims, remove them before
fitting snow chains.

WARNING:

If you choose to install

snow tires on your vehicle, they must be
the same size, construction, and load
range as the original tires listed on the
tire placard, and they must be installed
on all four wheels. Mixing tires of
different size or construction on your
vehicle can adversely affect your
vehicle's handling and braking, and may
lead to loss of vehicle control.

The tires on your vehicle have all-weather
treads to provide traction in rain and snow.
However, in some climates, you may need
to use snow tires and cables. If you need
to use cables, it is recommended that steel
wheels (of the same size and
specifications) be used, as cables may chip
aluminum wheels.

Follow these guidelines when using snow
tires and traction devices.

•

If possible, avoid fully loading your
vehicle.

•

Purchase chains or cables from a
manufacturer that clearly labels body
to tire dimension restrictions.

•

Use 10 mm cables or chains only on
front axle with 225/65R17 and
225/60R18 tires.

•

Not all S-class snow chains or cables
meet these restrictions. Chains of this
size restriction will include a tensioning
device.

•

The snow chains or cables must be
mounted in pairs on the front axle.

•

Do not use chains or cables on
235/65R17 tires.

•

Install cables securely, verifying that
the cables do not touch any wiring,
brake lines or fuel lines.

•

When driving with tire cables do not
exceed 30 mph (48 km/h) or the
maximum speed recommended by the
chain manufacturer, whichever is less.

•

Drive cautiously. If you hear the cables
rub or bang against the vehicle, stop
and retighten them. If this does not
work, remove the cables to prevent
vehicle damage.

•

Remove the cables when they are no
longer needed. Do not use cables on
dry roads.

If you have any questions regarding snow
chains or cables, please contact your
authorized dealer.

323

Wheels and Tires

TIRE PRESSURE MONITORING
SYSTEM

WARNING:

The tire

pressure monitoring system is
not a substitute for manually
checking tire pressures. You
should periodically check tire
pressures using a pressure
gauge. Failure to correctly
maintain tire pressures could
increase the risk of tire failure,
loss of control, vehicle rollover
and personal injury.

Note:

You should only use tire

sealants in roadside emergencies
as they may cause damage to the
tire pressure monitoring system
sensor.

Note:

If the tire pressure

monitoring system sensor becomes
damaged, it may not function.

Each tire, including the
spare (if provided), should
be checked monthly when

cold and inflated to the inflation
pressure recommended by the
vehicle manufacturer on the
vehicle placard or tire inflation
pressure label. (If your vehicle has
tires of a different size than the
size indicated on the vehicle
placard or tire inflation pressure
label, you should determine the
proper tire inflation pressure for
those tires).

As an added safety feature, your
vehicle has been equipped with a
Tire Pressure Monitoring System
(TPMS) that illuminates a low tire
pressure telltale when one or
more of your tires is significantly
under-inflated. Accordingly, when
the low tire pressure telltale
illuminates, you should stop and
check your tires as soon as
possible, and inflate them to the
proper pressure. Driving on a
significantly under-inflated tire
causes the tire to overheat and
can lead to tire failure.
Under-inflation also reduces fuel
efficiency and tire tread life, and
may affect the vehicle’s handling
and stopping ability.

Please note that the TPMS is not
a substitute for proper tire
maintenance, and it is the driver’s
responsibility to maintain correct
tire pressure, even if
under-inflation has not reached
the level to trigger illumination of
the TPMS low tire pressure
telltale.

Your vehicle has also been
equipped with a TPMS
malfunction indicator to indicate
when the system is not operating
properly. The TPMS malfunction
indicator is combined with the low
tire pressure telltale. When the
system detects a malfunction, the
telltale will flash for

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Wheels and Tires

approximately one minute and
then remain continuously
illuminated. This sequence will
continue upon subsequent vehicle
start-ups as long as the
malfunction exists.

When the malfunction indicator
is illuminated, the system may not
be able to detect or signal low tire
pressure as intended. TPMS
malfunctions may occur for a
variety of reasons, including the
installation of replacement or
alternate tires or wheels on the
vehicle that prevent the TPMS
from functioning properly. Always
check the TPMS malfunction
telltale after replacing one or
more tires or wheels on your
vehicle to ensure that the
replacement or alternate tires and
wheels allow the TPMS to
continue to function properly.

This device complies with Part 15
of the FCC Rules and with License
exempt RSS Standards of Industry
Canada. Operation is subject to
the following two conditions:

1. This device may not cause

harmful interference, and

2. This device must accept any

interference received, including
interference that may cause
undesired operation.

WARNING:

Changes or

modifications not expressively
approved by the party
responsible for compliance
could void the user's authority
to operate the equipment. The
term "IC:" before the radio
certification number only
signifies that Industry Canada
technical specifications were
met.

Changing Tires With a Tire
Pressure Monitoring System

E142549

Note:

Each road tire is equipped

with a tire pressure sensor located
inside the wheel and tire assembly
cavity. The pressure sensor is
attached to the valve stem. The
pressure sensor is covered by the
tire and is not visible unless the tire
is removed. Take care when
changing the tire to avoid
damaging the sensor.

You should always have your tires
serviced by an authorized dealer.

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Wheels and Tires

Check the tire pressure
periodically (at least monthly)
using an accurate tire gauge. See

When Inflating Your Tires

in this

chapter.

Understanding Your Tire
Pressure Monitoring System

E250820

The tire pressure monitoring
system measures pressure in your
road tires and sends the tire
pressure readings to your vehicle.
You can view the tire pressure
readings through the information
display. See

General

Information

(page 102). The low

tire pressure warning light will turn
on if the tire pressure is
significantly low. Once the light is
illuminated, your tires are

under-inflated and need to be
inflated to the manufacturer’s
recommended tire pressure. Even
if the light turns on and a short
time later turns off, your tire
pressure still needs to be checked.

When Your Temporary Spare
Tire is Installed

When one of your road tires needs
to be replaced with the temporary
spare, the system will continue to

identify an issue to remind you
that the damaged road wheel and
tire assembly needs to be repaired
and put back on your vehicle.

To restore the full function of the
tire pressure monitoring system,
have the damaged road wheel
and tire assembly repaired and
remounted on your vehicle.

When You Believe Your System
is Not Operating Properly

The main function of the tire
pressure monitoring system is to

warn you when your tires need air.
It can also warn you in the event
the system is no longer capable
of functioning as intended. See
the following chart for information
concerning your tire pressure
monitoring system:

326

Wheels and Tires

Customer action required

Possible cause

Low tire pres-

sure warning

light

Make sure tires are at the proper
pressure. See Inflating your tires
in this chapter. After inflating
your tires to the manufacturer’s
recommended pressure as
shown on the Tire Label (located
on the edge of driver’s door or
the B-Pillar), the vehicle must be
driven for at least two minutes
over 20 mph (32 km/h) before
the light turns off.

Tire(s) under-

inflated

Solid warning

light

Repair the damaged road wheel
and tire assembly and reinstall
it on the vehicle to restore
system function. For a descrip-
tion on how the system func-
tions, see

When Your

Temporary Spare Tire is
Installed

in this section.

Spare tire in use

If the tires are properly inflated
and the spare tire is not in use
but the light remains on, contact
your authorized dealer as soon
as possible.

TPMS malfunction

Repair the damaged road wheel
and tire assembly and reinstall
it on the vehicle to restore
system function. For a descrip-
tion on how the system func-
tions, see

When Your

Temporary Spare Tire is
Installed

in this section.

Spare tire in use

Flashing

warning light

If the tires are properly inflated
and the spare tire is not in use

TPMS malfunction

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Wheels and Tires

Customer action required

Possible cause

Low tire pres-

sure warning

light

but the light remains on, contact
your authorized dealer as soon
as possible.

When Inflating Your Tires

WARNING:

Do not use the

tire pressure displayed in the
information display as a tire
pressure gauge. Failure to follow
this instruction could result in
personal injury or death.

When putting air into your tires
(such as at a gas station or in your
garage), the tire pressure
monitoring system may not
respond immediately to the air
added to your tires.

It may take up to two minutes of
driving over 20 mph (32 km/h) for
the light to turn off after you have
filled your tires to the
recommended inflation pressure.

How Temperature Affects Your
Tire Pressure

The tire pressure monitoring
system monitors tire pressure in
each pneumatic tire. While driving
in a normal manner, a typical
passenger tire inflation pressure
may increase about 2–4 psi
(14–28 kPa) from a cold start
situation. If the vehicle is

stationary overnight with the
outside temperature significantly
lower than the daytime
temperature, the tire pressure may
decrease about 3 psi (21 kPa) for
a drop of 30°F (17°C) in ambient
temperature. This lower pressure
value may be detected by the tire
pressure monitoring system as
being significantly lower than the
recommended inflation pressure
and activate the system warning
light for low tire pressure. If the
low tire pressure warning light is
on, visually check each tire to
verify that no tire is flat. If one or
more tires are flat, repair as
necessary. Check the air pressure
in the road tires. If any tire is
under-inflated, carefully drive the
vehicle to the nearest location
where air can be added to the
tires. Inflate all the tires to the
recommended inflation pressure.

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Wheels and Tires