2024 MAZDA CX90 wheel size

Snow Tires
WARNING
Use only the same size and type tires
(snow, radial, or non-radial) on all 4
wheels:
Using tires different in size or type is
dangerous. Your vehicle's handling
could be greatly affected and result in
an accident.
CAUTION
Check local regulations before using
studded tires.
Use snow tires on all 4 wheels
Do not go faster than 120 km/h (75
mph) while driving with snow tires.
When installing winter tires, use tires of
the specified size and adjust the air
pressure of all the tires to the specified
value. (page 10-71).

The vehicle is originally equipped with
all season radials designed to be used
all year around. In some extreme
climates you may find it necessary to
replace them with snow tires during
the winter months to further improve
traction on snow and ice covered
roads.
Tire Chains
Check local regulations before using
tire chains.
CAUTION
 Chains may aff ect handling.
 Do not go faster than 50 km/h (30
mph) or the chain manufacturer's
recommended limit, whichever is
lower.
 Drive carefully and avoid bumps,
holes, and sharp turns.
 Avoid locked-wheel braking.
 Do not use chains on a temporary
spare tire; it may result in damage to
the vehicle and to the tire.
 Do not use chains on roads that are
free of snow or ice. The tires and
chains could be damaged.
 Chains may scratch or chip
aluminum wheels.
NOTE
The tire pressure monitoring system
may not function correctly when using
tire chains.
Install the chains on the rear tires only.
Do not use chains on the front tires.
Please consult an Authorized Mazda
Dealer.
Installing the chains
1. Secure the chains on the rear tires
as tightly as possible. Always follow
the chain manufacturer's
instructions.
2. Retighten the chains after driving 1/2 ―1 km (1/4 ―1/2 mile).
Driving
Winter Driving
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NOTE
When blocking a tire, use rocks or
wood blocks of sufficient size if
possible to hold the tire in place.
Removing a Flat Tire
WARNING
When jacking-up a vehicle, always
shift the selector lever to P position,
apply the parking brake, and place
wheel blocks in the position
diagonally opposed to the jack.
Changing a flat tire without using
wheel blocks is dangerous because the
vehicle may move and fall off the jack
even with the selector lever is in P
position, which could result in an
accident.
1. Loosen the lug nuts by turning them counterclockwise one turn each,
but do not remove any lug nuts
until the tire has been raised off the
ground.
NOTE
If your Mazda is equipped with the
optional antitheft wheel lug nuts, a
special key must be used to unlock
the locking lug nut for each wheel.
For details, refer to “Locking Lug
Nuts” below.
2. Place the jack on the ground.
3. Turn the jack screw in the direction shown in the figure and adjust the
jack head so that it is close to the
jack-up position.
4. Place the jack under the jack-upposition closest to the tire being
changed with the jack head
squarely under the jack-up point.
5. Continue raising the jack headgradually by rotating the screw with
your hand until the jack head is
inserted into the jack-up position.
What to Do in Case of Emergency
Tire is Punctured or Bursts
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AWD Warning Light
The light turns on if the system has a
problem or if the tire sizes do not
match.
Check the contents of the message
displayed and take the necessary
action.
Tire Pressure MonitoringSystem (TPMS) Warning Light (Flashing)
The light flashes if there is a
malfunction in the system.
Contact an Authorized Mazda Dealer.
WARNING
Do not drive the vehicle at high
speeds if the TPMS warning light turns
on or flashes:
Driving the vehicle at high speeds
while the TPMS warning light is turned
on or flashing is dangerous because
the brake performance and the
steering wheel operability will be
reduced. If the vehicle is driven at high
speeds or the brakes are suddenly
applied, it could lead to an accident.
Gradually apply the brakes to lower the
vehicle's speed.
Do not ignore the TPMS warning light
when it is turned on or flashing:
Continuing to driv e the vehicle while
ignoring the illumi nation/flashing of
the TPMS warning light is dangerous
because a tire may burst which could
lead to an accident. Take appropriate
measures as soon as possible.
What to Do in Case of Emergency
Warning/Indicator Light Turns On
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Inspecting the Tires
About Tires
For reasons of proper performance,
safety, and better energy efficiency,
always maintain recommended tire
inflation pressures and stay within the
recommended load limits and weight
distribution.
WARNING
Using Different Tire Types.
Driving your vehicle with different
types of tires is dangerous. It could
cause poor handling and poor braking;
leading to loss of control.
Except for the limited use of the
temporary spare tire, use only the
same type tires (radial, bias-belted,
bias-type) on all four wheels.
Using Wrong-Sized Tires.
Using any other tire size than what is
specified for the vehicle (page
10-71)is dangerous. It could seriously
affect ride, handling, ground
clearance, tire clearance, and
speedometer calibration. This could
cause you to have an accident. Use
only tires that are the correct size
specified for the vehicle.

Inspecting tire inflation pressure
WARNING
Always inflate the tires to the correct
pressure.
Overinflation or underinflation of tires
is dangerous. Adverse handling or
unexpected tire failure could result in a
serious accident.
Refer to Tires on page 10-71.
Use only a Mazda-genuine tire valve
cap.
Use of a non-genuine part is
dangerous as the correct tire air
pressure cannot be maintained if the
tire valve becomes damaged. If the
vehicle is driven under this condition,
the tire air pressure will decrease
which could result in a serious
accident. Do not use any part for the
tire valve cap that is not a
Mazda-genuine part.
Inspect all tire pressures monthly
(including the spare) when the tires are
cold. Maintain recommended
pressures for the best ride, handling ,
and minimum tire wear.
Refer to the specification charts (page
10-71).
NOTE
Cold inflation pressure
The cold inflation pressure is the
pressure measured under ambient
temperatures before the vehicle is
driven.
Maximum inflation pressure
The maximum inflation pressure is
the upper limit of the cold inflation
pressure designated by the tire
manufacturer.
Recommended inflation pressure
The recommended inflation pressure
is the cold inflation pressure
necessary for maintaining the
performance of your Mazda.
Underinflation or overinflation can
cause a harsh ride, reduced fuel
economy, a greater possibility of
damage from road hazards, uneven
and accelerated tire wear, and poor
sealing of the tire bead, which will
deform the wheel and cause
separation of tire from rim.
Inspection and Servicing/Cleaning
Vehicle Exterior Inspection
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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.
Replacing a Tire or aWheel
WARNING
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.
Always use wheels of the correct size
on your vehicle.
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
If a tire wears evenly, a wear indicator
will appear as a solid band across the
tread.
Inspection and Servicing/Cleaning
Vehicle Exterior Inspection
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P
Indicates a tire that may be installed on
cars, SUVs, minivans and light trucks as
designated by the Tire and Rim
Association (T&RA).
NOTE
If your tire size does not begin with a
letter this may mean it is designated by
either ETRTO (European Tire and Rim
Technical Organization) or JATMA
(Japan Tire Manufacturing
Association).
215
“215” is the nominal width of the tire
in millimeters. This three-digit number
gives the width in millimeters of the
tire from sidewall edge to sidewall
edge. In general, the larger the
number, the wider the tire.
65
“65” is the aspect ratio. This two-digit
number indicates the tire's ratio of
height to width.
R
“R” is the tire construction symbol. R
indicates “Radial ply construction”.
15
“15” is the wheel rim diameter in
inches.
95
“95” is the Load Index. This two-or
three-digit number indicates how
much weight each tire can support.
H
“H” is the speed rating. The speed
rating denotes the maximum speed for
which the use of the tire is rated.
Letter Rating Speed Rating
Q 99 mph
R 106 mph
S 112 mph
T 118 mph
U 124 mph
H 130 mph
V 149 mph
W 168
* mph
Y 186
* mph
* For tires with a maximum speed capability over
149 mph, tire manufacturers sometimes use the
letters ZR. For tires with a maximum speed
capability over 186 mph, tire manufacturers
always use the letters ZR.
M+S or M/S: Mud and Snow
AT: All Terrain.
AS: All Season. The “M+S” or “M/S”
indicates that the tire has some
functional use in mud and snow.
U.S. DOT Tire Identification Number
(TIN)
This begins with the letters “DOT”
which indicates the tire meets all
federal standards. The next two
numbers or letters are the plant code
where it was manufactured, and the
last four numbers represent the week
and year the tire was manufactured.
For example, the numbers 457 means
the 45st week of 1997. After 2000 the
numbers go to four digits. For
example, the number 2102 means the
21th week of 2002. The other
numbers are marketing codes used at
the manufacturer's discretion. This
information is used to contact
consumers if a tire defect requires a
recall.
Specifications/Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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Tire Ply Composition and Materials
Used
The number of plies indicates the
number of layers of rubber-coated
fabric in the tire. In general, the greater
the number of plies, the more weight a
tire can support. Tire manufacturers
also must indicate the tire materials,
which include steel, nylon, polyester,
and other.
Maximum Load Rating
This number indicates the maximum
load in kilograms and pounds that can
be carried by the tire.
Maximum Permissible Inflation
Pressure
This number is the greatest amount of
air pressure that should ever be put in
the tire under normal driving
conditions.
Tread Wear, Traction and Temperature
Grades
Trea d wea r : The tread wear 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 (1 1/2) times as well on the
government course as a tire graded
100.
Tra c t i o n : 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.
Snow Tires
In some heavy snow areas, local
governments may require true snow
tires, those with very deeply cut tread.
These tires should only be used in pairs
or placed on all four wheels. Make
sure you purchase snow tires that are
the same size and construction type as
the other tires on your vehicle.
SAFETY WARNING
The following safety warning appears
on the tire's sidewall.
SERIOUS INJURY MAY RESULT FROM:
EXPLOSION OF TIRE/RIM ASSEMBLY
DUE TO IMPROPER
MOUNTING-MATCH TIRE
DIAMETER TO RIM DIAMETER;
NEVER EXCEED 40 psi (275 kPa) TO
SEAT BEADS-ONLY SPECIALLY
TRAINED PERSONS SHOULD
MOUNT TIRES.
TIRE FAILURE DUE TO UNDER-INFLATION/
OVERLOADING/DAMAGE-FOLLOW
OWNER'S MANUAL AND PLACARD
IN VEHICLE-FREQUENTLY CHECK
INFLATION PRESSURE AND INSPECT
FOR DAMAGE.
Specifications/Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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Information on
Te m p o ra r y Ti r e s
Please refer to the sample below.
1. Temporary tires
2. Nominal width of tire in millimeters
3. Ratio of height to width (aspect rat io)
4. Diagonal
5. Rim diameter code
6. Load index & speed symbol

T115/70D16 90M is an example of a
tire size and load index rating. Here is
an explanation of the various
components of that tire size and load
index rating. Note that the tire size and
load index rating may be different from
the example.
T
Indicates a tire that may be installed on
cars, SUVs, minivans and light trucks as
designated by the Tire and Rim
Association (T&RA).
115
“115” is the nomina l width of the tire
in millimeters. This three-digit number
gives the width in millimeters of the
tire from sidewall edge to sidewall
edge. In general, the larger the
number, the wider the tire.
70
“70” is the aspect ratio. This two-digit
number indicates the tire's ratio of
height to width.
D
“D” is the tire construction symbol. D
indicates “diagonal ply construction”.
16
“16” is the wheel rim diameter in
inches.
90
“90” is the Load Index. This two-or
three-digit number indicates how
much weight each tire can support.
M
“M” is the speed rating. The speed
rating denotes the maximum speed for
which the use of the tire is rated.
Letter Rating Speed Rating
M 81 mph
Specifications/Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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