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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
9-27
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Replace the tire when this happens.
1. New tread
2. Worn tread
3. Tread wear indicator
You should replace the tire before the
band crosses the entire tread.
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 10-30.
Replacing Light Bulbs
All the light bulbs are the LED type.
The LED bulb cannot be replaced as a
single unit because it is an integrated
unit.
The LED bulb has to be replaced with
the unit. If a replacement is necessary,
consult an Authorized Mazda Dealer.
Adjusting the Headlight Aim
If the headlight cannot be adjusted
using procedure below, consult an
Authorized Mazda Dealer.
1. Make sure the vehicle has a fulltank of gasoline and the area
around the headlight is not
deformed.
2. Park the vehicle on level ground.
3. Sit in the driver's seat.
4. Bounce the vehicle several times.
5. Using a Phillips-head screw-driver, turn bolt A in either direction.
Remember the turning direction
and the number of turns.
6. Turn bolt B the same number of turns and in the same direction as
step 5.
1. Adjustment bolt A
2. Adjustment bolt B
Inspection and Servicing/Cleaning
Vehicle Exterior Inspection
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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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Tires
Sample tire mark and its meaning
1. Nominal section width
2. Nominal aspect ratio in %
3. Construction code
4. Nominal rim diameter in inches
5. Load index (not on ZR tires)
6. Speed symbol
7. Mud and snow
Tire mark information
Choose the proper tires for your vehicle using the following tire mark information.
Speed symbol Maximum permissible speed
Q Up to 160 km/h (99 mph)
R Up to 170 km/h (105 mph)
S Up to 180 km/h (111 mph)
T Up to 190 km/h (118 mph)
U Up to 200 km/h (124 mph)
H Up to 210 km/h (130 mph)
V Up to 240 km/h (149 mph)
W Up to 270 km/h (167 mph)
Y Up to 300 km/h (186 mph)
ZR Over 240 km/h (149 mph)
Tire and inflation pressure
NOTE
The tires have been optimally matched with the chassis of your vehicle.
When replacing tires, Mazda recommends that you replace tires of the same type
originally fitted to your vehicle. For details, contact an Authorized Mazda Dealer.
Check the tire pressure label for tire size and inflation pressure.
Refer to Tire Pressure Label on page 10-61.
Specifications/Customer Information and Reporting Safety Defects
Ve h i c l e Specification
10-71
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