tires MAZDA MODEL MX-5 MIATA RF 2020 Owner's Guide

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 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 tire.
3. Install the lug nuts with the beveled edge inward; tighten them by hand.

WA R N I N G
Do not apply oil or grease to lug nuts
and bolts and do not tighten the lug
nuts beyond the recommended
tightening torque:
Applying oil or grease to lug nuts and
bolts is dangerous. The lug nuts could
loosen while driving and cause the tire
to come off, resulting in an accident. In
addition, lug nuts and bolts could be
damaged if tightened more than
necessary.
If Trouble Arises
Flat Tire
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4. Turn the lug wrench counterclockwiseand lower the vehicle.
5. Use the lug wrench to tighten the nuts
in the order shown.

If you are unsure of how tight the nuts
should be, have them inspected at an
Authorized Mazda Dealer.
Nut tightening torque
N·m (kgf·m, ft·lbf) 108―147 (12―14,
80―108)
WARNING
Always securely and correctly tighten
the lug nuts:
Improperly or loosely tightened lug
nuts are dangerous. The wheel could
wobble or come off. This could result in
loss of vehicle control and cause a
serious accident.
Be sure to reinstall the same nuts you
removed or replace them with metric
nuts of the same configuration:
Because the wheel studs and lug nuts
on your Mazda have metric threads,
using a non-metric nut is dangerous.
On a metric stud, it would not secure
the wheel and would damage the stud,
which could cause the wheel to slip off
and cause an accident.
6. Remove the tire blocks and store the tools and jack.
7. Check the inflation pressure. Refer to Tires on page 9-8.
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
(Red)
(Turns on)
KEY Warning
Light
*
If any malfunction occurs in the keyless entry system, it illuminates continuously.
CAUTION
If the key warning indicator light illuminates or the push button start indicator light (amber)
flashes, the engine may not start. If the engine cannot be started, try starting it using the
emergency operation for starting the engine, and have the vehicle inspected at an Author‐
ized Mazda Dealer as soon as possible.
Refer to Emergency Operation for Starting the Engine on page 4- 10.
(Turns on)
Lane Departure
Wa r n i n g S y s t e m
(LDWS) Warning
Indication/Warning
Light
*
The warning indication/warning light illuminates if there is a problem with the system.
Have your vehicle inspected at an Authorized Mazda Dealer.
The LDWS does not operate when the warning indication/warning l ight illuminates.
CAUTION
A problem in the system may be indicated under the following conditions. Have your ve‐
hicle inspected at an Authorized Mazda Dealer.
When the warning indication/warning light illuminates while driving the vehicle.
When the system is canceled automatically, the warning indication/warning light illu‐
minates. Normally, the system restores automatically and the warning indication/
warning light turns off, however, if the wa rning indication/warning light illuminates,
there may be a problem with the system.
 The warning indication/warning light does no t illuminate when the ignition is switch‐
ed ON.
 Always use tires for all wheels that are of the specified size, and the same manufacture,
brand, and tread pattern. In addition, do not use tires with significantly different wear
patterns on the same vehicle. If such improper tires are used, the LDWS may not operate
normally.
 When an emergency spare tire is used, the system may not operate normally.
NOTE
If the windshield area in front of the Fo rward 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.
(Amber)
High Beam Control System (HBC)
Warning Indication/
Warning Light
*
The warning indication/warning light illuminates if there is a problem with the system.
Have your vehicle inspected a t an Authorized Mazda Dealer.
NOTE
If the windshield area in front of the Fo rward Sensing Camera (FSC) is fogged or ob ‐
structed, the warning in dication/warning light illuminates temporarily. If the warning in ‐
dication/warning light illuminates, ther e may be a problem with the system.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.7-39
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SignalWarning Action to be taken
Low Washer Fluid
Level Warning Indica‐
tion/Warning Light
*
This warning light indicates that little wash‐
er fluid remains. Add washer fluid (page 6-27).

Tire Pressure Monitoring Sys
tem Warning Light (Turns on)
Take the appropriate action and verify that the warning light t urns off.
Wa r n i n g
When the warning light illuminate s, and the warning beep sound is heard when tire pressu re is too low in one or
more tires.
WARNING
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 maneuvering and braking:
If the tire pressure monitoring system warning light illumin ates or flashes, or the tire pressure warning beep sound
is heard, it is dangerous to drive the vehicle at high speeds, or perform sudden 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 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 da ngerous, 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 accident.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Action to be taken
Inspect the tires and adjust to the specified inflation pressur e (page 6-38).
CAUTION
When replacing/repairing the tires or wheels or both, have the work done by an Authorized Mazda Dealer, or the
tire pressure sens ors may be damaged.
NOTE
Perform tire pressure adjustment when the tires are cold . Tire pressure will vary according to the tire temper‐
ature, therefore let the vehicle stand for 1 hour or only drive it 1.6 km (1 mile) or less before adjusting the
tire pressures. When pressure is adjusted on hot tires to the cold inflation pressure, the TPMS warning light/
beep may turn on after the tires cool and pressure drops below specification.
Also, an illuminated TPMS warning light, resulting from the tire air pressure dropping due to cold ambient
temperature, may turn off if the ambient temperature rises. In this case, it will also be necessary to adjust the
tire air pressures. If the TPMS warnin g light illuminates due to a drop in tire air pressure, make sure to check
and adjust the tire air pressures.
After adjusting the tire air pressures, it may require some time for the TPMS warning light to turn off. If the
TPMS warning light remains illuminate d, drive the vehicle at a speed of at least 25 km/h (16 mph) for 10
minutes, and then verify that it turns off.
Tires lose air naturally over time and the TPMS cannot tell if the tires are getting too soft over time or you
have a flat. However, when you find one low tire 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 sidewall. Put a few drops of water in the valve stem to see if it bubbles indicating a
bad valve. Leaks need to be addr essed by more than simply refilling the trouble tire as leaks are dangerous
― take it to an Authorized Mazda Dealer which has all the equipment to fix tires, TPMS systems and order
the best replacement tire for your vehicle.
If the warning light illuminates again even after the tire pressures are adjusted, there may be a tire puncture.

If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Uniform Tire Quality Grading System (UTQGS)
This information relates to the tire grading system developed by the U.S. National Highway
Traffic Safety Administration for grading tires by tread wear, traction, and temperature
performance.
▼ Tr e a d We a 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 cour
se.
For example, a tire graded 150 would wear one-and-a-half times as well on the government
course as a tire graded 100.

The relative performance of tires depends upon the actual condi tions of their use, however,
and may depart significantly from the norm because of variation s in driving habits, service
practices and differences in ro ad characteristics and climate.
▼Traction-AA, A, B, C
The traction grades, from highest
to lowest, are AA, A, B, and C. These grades represent the
tire's ability to stop on wet pavement as measured under contro lled conditions on specified
government test surfaces of asphalt and concrete. A tire marked C may have poor traction
performance.
WA R N I N G
The traction grade assigned to this tire is based on braking (straight ahead) traction tests and
does not include acceleration cornering (turning), hydroplaning, or peak traction
characteristics.
▼ Temperature-A, B, C
The temperature grades A (the hi
ghest), B, and C, represent the tire's resistance to the
generation of heat and its ability to dissipate heat when teste d 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 temperatures can lead to sudden tire failure.

Grade C corresponds to a level of performance which all passeng er vehicle tires must meet
under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher
levels of performance on the labo ratory test wheel than the minimum required by law.
Customer Information and Reporting Safety Defects
Uniform Tire Quality G rading System (UTQGS)
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WA R N I N G
Keep your vehicle's tires properly inflated and not overloaded:
Driving with improperly inflated or overl oaded tires is dangerous. Excessive speed,
underinflation, or excessive loading, either separately or in combination, can cause heat
buildup and possible tire failure. The temperatur e grade for this tire is established for a tire
that is properly inflated and not overloaded.

These grades will be added to the sidewalls of passenger vehicl e tires over the next several
years according to a schedule established by the NHTSA and the tire manufacturers.

The grade of tires available as standard or optional equipment on Mazda vehicles may vary
with respect to grade.

ALL PASSENGER VEHICLE TIRES MUST CONFORM TO THESE GRADES AND TO
ALL OTHER FEDERAL TIRE-SAFETY REQUIREMENTS.
▼ UNIFORM TIRE QUALITY GRADING
Quality grades can be found where applicable on the tire sidewa
ll between tread shoulder
and maximum section width.
For example:
TREADWEAR 200 TRACTION AA TEMPERATURE A
UTQGS MARK (example)
Customer Information and Reporting Safety Defects
Uniform Tire Quality G rading System (UTQGS)
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Tire Labeling
Federal law requires tire manufacturers to place standardized information on the sidewall of
all tires. This inform ation identifies and describes the fundam ental characteristics of the tire
and also provides a tire identification number for safety standard certification and in case of
a recall.
▼ Information on Passenger Vehicle Tires
Please refer to the sample below.
1. TIN: U.S. DOT tire identification number
2. Passenger car tire
3. Nominal width of tire in millimeters
4. Ratio of height to width (aspect ratio)
5. Radial
6. Run-flat tire
7. Rim diameter code
8. Load index & speed symbol
9. Severe snow conditions
10. Tire ply composition and materials used
11. Max. load rating
12. Tread wear, traction and temperature grades
13. Max. permissible inflation pressure
14. SAFETY WARNING
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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Letter RatingSpeed Rating
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 cap ability over 186 mph, tire manufa cturers always use the letters ZR.
MS 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 Identifi cation Number (TIN)
This begins with the letters “DOT” which indicates the tire mee ts all federal standards. The
next two numbers or letters are the plant code where it was man ufactured, 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 f our 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.
Tire Ply Composition and Materials Used
The number of plies indicates the number of layers of rubber-co ated fabric in the tire. In
general, the greater the number of plies, the more weight a tir e can support. Tire
manufacturers also must indicate the tire materials, which incl ude 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 amoun t of air pressure that should ever be put in the tire under
normal driving conditions.
Tread Wear, Traction and Temperature Grades
Tr e a d w e a r : The tread wear grade is a comparative rating based on the wear rate of the tire
when tested under controlled con ditions 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.
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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Traction: The traction grades, from highe st to lowest are AA, A, B, and C. The grades
represent the tire's ability to stop on wet pavement as measure d under controlled conditions
on specified government test surfaces of asphalt and concrete. A tire marked C may have
poor traction performance.
Te m p e r a t u r e : The temperature grades are A (the highest), B and C, represent ing the tire's
resistance to the generation of heat and its ability to dissipa te heat when tested under
controlled conditions on a spec ified indoor laboratory test whe el.
Snow Tires
In some heavy snow areas, local governments may require true sn ow tires, those with very
deeply cut tread. These tires should only be used in pairs or p laced 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 a ppears on the tire's sidewall.
SERIOUS INJURY MAY RESULT FROM:
EXPLOSION OF TIRE/RIM ASSEMBLY DUE TO IMPROPER MOUNTING-MATCH
TIRE DIAMETER TO RIM D IAMETER; 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.
▼ Information on Temporary Tires
Please refer to the sample below.
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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