2018 MAZDA MODEL 3 HATCHBACK tire pressure

Overinflation can produce a harsh ride,
uneven and accelerated tire wear, and a
greater possibility of damage from road
hazards.
Keep your tire pressure at the correct
levels. If one frequently needs inflating,
have it inspected.
▼Tire Rotation
WA R N I N G
Rotate tires periodically:
Irregular tire wear is dangerous. To equalize
tread wear for maintaining good
performance in handling and braking,
rotate the tires every 12,000 km (7,500
miles). However Mazda recommends to
rotate every 8,000 km (5,000 miles) to help
increase tire life and distribute wear more
evenly.
Refer to Scheduled Maintenance on page
6-4.

During rotation, inspect them for correct
balance.

Do not include (TEMPORARY USE ONLY)
spare tire in rotation.Forward
Also, inspect them for uneven wear and
damage. Abnormal wear is usually caused
by one or a combination of the following:

Incorrect tire pressure
Improper wheel alignment
Out-of-balance wheel
Severe braking

After rotation, inflate all tire pressures to
specification (page 9-10) and inspect the
lug nuts for tightness.
(With tire pressure monitoring system)
After adjusting th e tire pressure,
initialization of the tire pressure
monitoring system is necessary to make
the system operate normally.
Refer to Tire Pressu re Monitoring System
Initialization on page 4-148.
CAUTION
Rotate unidirectional tires and radial tires
that have an asymmetrical tread pattern or
studs only from front to rear, not from side
to side. Tire performance will be reduced if
rotated from side to side.
Maintenance and Care
Owner Maintenance
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▼Replacing a Tire
WA R N I N G
Always use tires that are in good condition:
Driving with worn tires is dangerous.
Reduced braking, steering, and traction
could result in an accident.
Replace all four tires at the same time:
Replacing just one tire is dangerous. It
could cause poor handling and poor
braking resulting in loss of vehicle control.
Mazda strongly recommends that you
replace all four tires at the same time.
If a tire wears evenly, a wear indicator will
appear as a solid band across the tread.
Replace the tire when this happens.
New tread Tread wear indicator
Worn tread
You should replace the tire before the band
crosses the entire tread.
(With tire pressure monitoring system)
After adjusting th e tire pressure,
initialization of the tire pressure
monitoring system is necessary to make
the system operate normally.
Refer to Tire Pressure Monitoring System
Initialization on page 4-148.
NOTE
Tires degrade over time, even when they
are not being used on the road. It is
recommended that tires generally be
replaced when they are 6 years or older.
Heat caused by hot climates or frequent
high loading conditions can accelerate the
aging process. You should replace the
spare tire when you replace the other road
tires due to the aging of the spare tire. The
period in which the tire was manufactured
(both week and year) is indicated by a
4-digit number.
Refer to Tire Labeling on page 8-25.
▼ Temporary Spare Tire
Inspect the temporary spare tire at least
monthly to make su
re it is properly
inflated and stored.
NOTE
The temporary spare tire condition
gradually deteriorates even if it has not
been used.
The temporary spare tire is easier to
handle because of its construction which is
lighter and smaller t han a conventional
tire. This tire should be used only for an
emergency and only for a short distance.

Use the temporary spare tire only until the
conventional tire is repaired, which should
be as soon as possible.
Refer to Tires on page 9-10.

CAUTION
 Do not use your temporary spare tire rim
with a snow tire or a conventional tire.
Neither will properly fit and could
damage both tire and rim.
Maintenance and Care
Owner Maintenance
6-40
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The temporary spare tire has a tread life
of less than 5,000 km (3,000 miles). The
tread life may be shorter depending on
driving conditions.
 The temporary spare tire is for limited
use, however, if the tread wear
solid-band indicator appears, replace the
tire with the same type of temporary
spare (page 6-40).
NOTE
Tires degrade over time, even when they
are not being used on the road. It is
recommended that tires generally be
replaced when they are 6 years or older.
Heat caused by hot climates or frequent
high loading conditions can accelerate the
aging process. You should replace the
spare tire when you replace the other road
tires due to the aging of the spare tire. The
period in which the tire was manufactured
(both week and year) is indicated by a
4-digit number.
Refer to Tire Labeling on page 8-25.
▼ Replacing a Wheel
WA R N I N G
Always use wheels of the correct size on
your vehic le:
Using a wrong-sized wheel is dangerous.
Braking and handling could be affected,
leading to loss of control and an accident.
CAUTION
A wrong-sized wheel may adversely
affect:
 Tire fit
 Wheel and bearing life
 Ground clearance
 Snow-chain clearance
 Speedometer calibration
 Headlight aim
 Bumper height
 Tire Pressure Monitoring System
*
NOTE
When replacing a wheel, make sure the
new one is the same as the original
factory wheel in diameter, rim width,
and offset (inset/outset).
For details, contact an Authorized
Mazda Dealer.

Proper tire balancing provides the best
riding comfort and helps reduce tread
wear. Out-of-balance tires can cause
vibration and uneven wear, such as
cupping and flat spots.
Maintenance and Care
Owner Maintenance
*Some models.6-41
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3. Place the lug wrench on top of the keyand apply pressure. Turn the wrench
counterclockwise.
To install the antitheft lug nut
1. Place the special key on top of the nut, and be sure to hold the key square to it.
If you hold the key at an angle, you
may damage both key and nut. Do not
use a power impact wrench.
2. Place the lug wrench on top of the
special key, apply pressure, and turn it
clockwise.
Nut tightening torque
N·m (kgf·m, ft·lbf) 108―147 (12―14,
80―108)
▼Mounting the Spare Tire
1. Remove dirt and grime from the
mounting surfaces of the wheel and
hub, including the hub bolts, with a
cloth.

WA R N I N G
Make sure the mounting surfaces of the
wheel, hub and lug nuts are clean
before changing or replacing tires:
When changing or replacing a tire, not
removing dirt and grime from the
mounting surfaces of the wheel, hub
and hub bolts is dangerous. The lug
nuts could loosen while driving and
cause the tire to come off, resulting in
an accident.
2. Mount the spare tire.
If Trouble Arises
Flat Tire
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NOTE
Pass the belt underneath the seatbelts.

BeltSeat belt
12. Pass the buckle through the wheel as
shown in the figure and secure it so
that the buckle does not contact the
wheel.
(Aluminum wheel)

(Steel wheel)

13. Pass the belt through the buckle, thenpull the belt end to secure the flat tire.

14.(Split-folding type seat)
Return the rear seatback on the right
side of the rear seatback to its original
position.
15. Remove the tire blocks and store the tools and jack.
16. Check the inflation pressure. Refer to Tires on page 9-10.
17. Have the flat tire repaired or replaced
as soon as possible.
NOTE
Do not press the tire pressure monitoring
system set switch after installing the spare
tire. The switch is only to be pressed after
installing the repaired flat tire or installing
a replacement tire (page 4-23).
If Trouble Arises
Flat Tire
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WA R N I N G
Do not drive with any tires that have
incorrect air pressure:
Driving on tires with incorrect air pressure
is dangerous. Tires with incorrect pressure
could affect handling and result in an
accident. When you check the regular tires'
air pressure, check the spare tire, too.
NOTE
To prevent the jack and tool from rattling,
store them properly.
If Trouble Arises
Flat Tire
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SignalWarning
(Flashing)
Tire Pressure Moni-
toring System Warn-
ing Light
*
If the tire pressure m onitoring system has a malfunction, the t ire pressure warning light
flashes for about 1 minute when the ignition is switched ON and then continues illuminat-
ing. Have your vehicle checked by an Authorized Mazda Dealer as soon as possible.
WARNING
If the tire pressure monitoring system warning light illuminates or flashes, or the tire pres‐
sure warning beep sound is heard, decrease vehicle speed immediately and avoid sudden
maneuvering and braking:
If the tire pressure monitoring system warning light illuminates or flashes, or the tire pres‐
sure warning beep sound is heard, it is dangerous to drive the vehicle at high speeds, or
perform sudden maneuvering or braking. Vehicl e drivability could worsen and result in an
accident.
To determine if you have a slow leak or a flat, pull over to a safe position where you can
check the visual condition of the tire and determine if you have enough air to proceed to a
place where air may be added and the system monitored again by an Authorized Mazda
Dealer or a tire repair station.
Do not ignore the TPMS Warning Light:
Ignoring the TPMS warning light is dangerous, even if you know why it is illuminated. Have
the problem taken care of as soon as possible before it develops into a more serious situa‐
tion that could lead to tire failure and a dangerous accident.
(Red)
(Turns on)
KEY Warning Light If any malfunction occurs in the keyless entry system, it illum
inates continuously.
CAUTION
If the key warning indicator light illuminates or the push button start indicator light (am‐
ber) flashes, the engine may not start. If the en gine cannot be started, try starting it using
the emergency operation for starting the engine , and have the vehicle inspected at an Au‐
thorized Mazda Dealer as soon as possible.
Refer to Emergency Operation for Starting the Engine on page 4- 10.
Security Indicator
Light If the engine does not start with the correct key, and the secu
rity indicator light remains
illuminated or flashing, try the following:
Make sure the key is within the operational range for signal transmission. Switch the igni-
tion off, and then restart the e ngine. If the engine does not s tart after 3 or more tries, con-
tact an Authorized Mazda Dealer.
(Amber)
High Beam Control System (HBC)
Wa r n i n g L i g h t
*
The light remains turned on if th ere is a problem with the system. Have your vehicle in-
spected at an Authorized Mazda Dealer.
NOTE
If the windshield area in fr ont of the Forward Sensing Camera (FSC) is fogged or ob-
structed, the light turns on temporarily. If the light remains turned on, there may be a
problem with the system.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-30*Some models.
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▼Taking Action
Take the appropriate action and verify that the warning light t
urns off.
SignalWarning Action to be taken
(Turns on)
Tire Pressure Monitoring
System
Wa r n i n g
Light
*
When the warning light illuminates, and the
warning beep sound is heard (about 3 seconds),
tire pressure is too low in one or more tires.
WA R N I N G
If the tire pressure monitoring system warning
light illuminates or flashes, or the tire pressure
warning beep sound is heard, decrease vehicle
speed immediately and avoid sudden maneuver‐
ing and braking:
If the tire pressure monitoring system warning
light illuminates or
flashes, or the tire pressure
warning beep sound is heard, it is dangerous to
drive the vehicle at high speeds, or perform sud‐
den maneuvering or braking. Vehicle drivability
could worsen and result in an accident.
To determine if you have a slow leak or a flat, pull
over to a safe position where you can check the
visual condition of the tire and determine if you
have enough air to proceed to a place where air
may be added and the sy stem monitored again
by an Authorized Mazda Dealer or a tire repair
station.
Do not ignore the TPMS Warning Light:
Ignoring the TPMS warn ing light is dangerous,
even if you know why it is illuminated. Have the
problem taken care of as soon as possible before
it develops into a more serious situation that
could lead to tire failure and a dangerous acci‐
dent. Inspect the tires and adjust to the specified in-
flation pressure (page 6-38).
NOTE
Perform tire pressure adjustment when the
tires are cold. Tire pressure will vary accord-
ing to the tire temperature, therefore let the ve-
hicle stand for 1 hour or only drive it 1.6 km (1
mile) or less before ad
justing the tire pres-
sures. When pressure is adjusted on hot tires to
the cold inflation pressure, the TPMS warning
light/beep may turn on af ter the tires cool and
pressure drops below specification.
Also, an illuminated TPMS warning light, re-
sulting from the tire air pressure dropping due
to cold ambient temper ature will remain illu-
minated even if the ambient temperature rises.
In this case, it will also be necessary to adjust
the tire air pressures. If the TPMS warning
light illuminates due to a drop in tire air pres-
sure, make sure to check and adjust the tire air
pressures.
Tires lose air naturally over time and the
TPMS cannot tell if the tires are getting too
soft over time or yo u have a flat. However,
when you find one low tir e in a set of four-that
is an indication of trouble; you should have
someone drive the vehicle slowly forward so
you can inspect any low tire for cuts and any
metal objects sticking through tread or side-
wall. Put a few drops of water in the valve
stem to see if it bubble s indicating a bad valve.
Leaks need to be addressed by more than sim-
ply reinflating the tire as leaks are dangerous
― take it to an Authorized Mazda Dealer.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-32*Some models.
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