tires TOYOTA YARIS iA 2018 (in English) Owner's Guide

YARIS iA_OM_OM99Q46z_(U)
4896-2. Flat Tire
6
If Trouble Arises
Pass the buckle through the wheel as shown in the figure and
secure it so that the buckle does not contact the wheel.
Pass the belt through the
buckle, then pull the belt end to
secure the flat tire.
Return the rear seatback on the right side of the rear seatback to its
original position.
Remove the tire blocks and store the tools and jack.
Check the inflation pressure.
Refer to Tires on P. 560.
Have the flat tire repaired or replaced as soon as possible.
●Do not press the tire pressure monito ring system set switch after install-
ing the spare tire. The switch is only to be pressed after installing the
repaired flat tire or inst alling a replacement tire ( →P. 148).
●To prevent the jack and tool from rattling, store them properly.
12
Aluminum wheelSteel wheel
13
●Pass the belt underneath the seat-
belts.
114
15
16
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Seat beltBelt

4906-2. Flat Tire
YARIS iA_OM_OM99Q46z_(U)
WARNING
■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 a nd cause the tire to come off, result-
ing in an accident.
■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.
■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 Toyota have metric
threads, using a non-metric nut is dan gerous. 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.
■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.

YARIS iA_OM_OM99Q46z_(U)
5096-7. Warning/Indicator Lights and Warning Sounds
6
If Trouble Arises
(Illuminate)
(if equipped)
Tire Pressure Monitoring
System Warning Light
When the warning light illu-
minates, and the warning
beep sound is heard (about
3 seconds), tire pressure is
too low in one or more tires.
Inspect the tires and
adjust to the specified
inflation pressure
(→ P. 439).
(Amber)
(if equipped)
Smart City Brake Support
(SCBS) Warning Light
The light turns on if the wind-
shield is dirty or there is a
malfunction in the system.
Vehicles with type B
audio
Verify the reason why the
warning light is illuminated
on the center display
( →P. 501).
If the reason why the
warning light is illuminated
is due to a dirty wind-
shield, clean the wind-
shield.
For any other reasons,
have the vehicle
inspected at your Toyota
dealer.
Vehicles without type B
audio
If the reason why the
warning light is illuminated
is due to a dirty wind-
shield, clean the wind-
shield. For any other
reasons, have the vehicle
inspected at your Toyota
dealer.
SignalWarningAction to be taken

YARIS iA_OM_OM99Q46z_(U)
5116-7. Warning/Indicator Lights and Warning Sounds
6
If Trouble Arises
■Tire Pressure Monitoring System Warning Light
●
Perform tire pressure adjustment wh en the tires are cold. Tire pressure
will vary according to the tire temperature, therefore let the vehicle stand
for 1 hour or only drive it 1 mile (1.6 km) 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 ligh t, resulting from the tire air pres-
sure dropping due to cold ambient temperature will remain illuminated
even if the ambient temper ature rises. In this case, it will also be neces-
sary to adjust the tire air pressures. If the TPMS warning light illuminates
due to a drop in tire air pressure, 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 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 address ed by more than simply reinflating
the tire as leaks are dangerous - take it to your Toyota dealer.
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 illuminates or
flashes, or the tire pressure warning beep sound is heard, it is danger-
ous to drive the vehicle at high speeds, or perform sudden maneuvering
or braking. Vehicle driv ability could worsen and re sult 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 your Toyota 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 th e 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.

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YARIS iA_OM_OM99Q46z_(U)
7-6. Uniform Tire Quality Grading System (UTQGS)
7
Customer Information and Reporting Safety Defects
Uniform Tire Qualit y 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.
The tread wear grade is a comparative rating based on the wear rate
of the tire when tested under controlled conditions on a specified gov-
ernment test course.
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 conditions
of their use, however, and may d epart significantly from the norm
because of variations in driving habits, service practices and differ-
ences in road characteristics and climate.
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 controlled conditio ns on specified government test
surfaces of asphalt and concrete . A tire marked C may have poor
traction performance.
Tread Wear
Traction-AA, A, B, C
WARNING
The traction grade assigned to this tire is based on braking (straight
ahead) traction tests and does not include acceleration cornering (turn-
ing), hydroplaning, or peak traction characteristics.

530
YARIS iA_OM_OM99Q46z_(U)
7-6. Uniform Tire Quality Grading System (UTQGS)
The temperature grades A (the highes t), B, and C, represent the tire’s
resistance to the generation of heat and its ability to dissipate heat
when tested under controlled conditions on a specified indoor labora-
tory 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 passenger
vehicle tires must meet under the Federal Motor Vehicle Safety Stan-
dard No. 109. Grades B and A represent higher levels of performance
on the laboratory test wheel than the minimum required by law.
These grades will be added to the sidew alls of passenger vehicle tires
over the next several years according to a schedule established by
the NHTSA and the tire manufacturers.
The grade of tires available as st andard or optional equipment on Toy-
ota vehicles may vary with respect to grade.
ALL PASSENGER VEHICLE TIRES MUST CONFORM TO THESE
GRADES AND TO ALL OTHER FE DERAL TIRE-SAFETY REQUIRE-
MENTS.
Temperature-A, B, C
WARNING
■Keep your vehicle’s tires properly inflated and not overloaded
Driving with improperly inflated or overloaded tires is dangerous. Exces-
sive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure. The tem-
perature grade for this tire is established for a tire that is properly
inflated and not overloaded.

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YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
Tire Labeling
Please refer to the sample below.
Federal law requires tire manufacturers to place standardized
information on the sidewall of all tires. This information identi-
fies and describes the fundamental characteristics of the tire
and also provides a tire identification number for safety stan-
dard certification and in case of a recall.
Information on Passenger Vehicle Tires
TIN: U.S. DOT tire identification
number
Passenger car tire
Nominal width of tire in millime-
ters
Ratio of height to width (aspect
ratio)
Radial
Run-flat tire
Rim diameter code Load index & speed symbol
Severe snow conditions
Tire ply composition and
materials used
Max. load rating
Tread wear, traction and tem-
perature grades
Max. permissible inflation
pressure
SAFETY WARNING1
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10
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12
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14

534
YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
*: For tires with a maximum speed capability over 149 mph, tire manufac-
turers 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 nu mbers or letters are the plant
code where it was manufactured, and the last four numbers repre-
sent 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 ot her numbers are marketing codes
used at the manufacturer’s discre tion. 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-
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 materi-
als, which include steel, nylon, polyester, and other.
Letter RatingSpeed Rating
Q99 mph
R106 mph
S112 mph
T118 mph
U124 mph
H130 mph
V149 mph
W168* mph
Y186* mph

YARIS iA_OM_OM99Q46z_(U)
5357-7. Tire Information (U.S.A.)
7
Customer Information and Reporting Safety Defects
■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
● Tread wear: The tread wear grade is a comparative rating based
on the wear rate of the tire wh en tested under controlled condi-
tions on a specified government te st 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.
● 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 as phalt 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 resist ance to the generation of heat and
its ability to dissipate heat w hen tested under controlled condi-
tions 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 pur-
chase 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. SERI-
OUS 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 UNDE R-INFLATION/OVERLOADING/
DAMAGE-FOLLOW OWNER’S MANUAL AND PLACARD IN
VEHICLE-FREQUENTLY CHECK INFLATION PRESSURE AND
INSPECT FOR DAMAGE.

536
YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
Please refer to the sample below.Temporary tires
Nominal width of tire in millime-
ters
Ratio of height to width (aspect
ratio)
Diagonal
Rim diameter code
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 inst alled on cars, SUVs, minivans and
light trucks as designated by the Tire and Rim Association (T&RA).
● 11 5
“115” is the nominal width of the ti re in millimeters. This three-digit
number gives the width in millimeter s 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 con-
struction”.
● 16
“16” is the wheel rim diameter in inches.
Information on Temporary Tires
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