wheel size TOYOTA YARIS iA 2018 Owners Manual (in English)

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YARIS iA_OM_OM99Q46z_(U)
1-4. SRS Air Bags
WARNING
■Seat belts must be worn in air bag equipped vehicles
Depending only on the air bags for protection during an accident is danger-
ous. Alone, air bags may not prevent serious injuries. The appropriate air
bags can be expected to inflate only in the first accident, such as frontal,
near frontal or side collisions or roll-over accidents that are at least moder-
ate. Vehicle occupants should always wear seat belts.
■ Children should not ride in the front passenger seat
Placing a child, 12 years or under, in the front seat is dangerous. The child
could be hit by a deploying air bag and be seriously injured or even killed. A
sleeping child is more likely to lean against the door and be hit by the side
air bag in moderate collision to the front-passenger side of the vehicle.
Whenever possible, always secure a child 12 years and under on the rear
seats with an appropriate child-restraint system for the child’s age and size.
■ Never use a rear-facing child-restra int system in the front seat with an
air bag that could deploy
■ Do not sit too close to the dr iver and front passenger air bags
Sitting too close to the driver and fr ont passenger air bag modules or plac-
ing hands or feet on them is extremely dangerous. The driver and front pas-
senger air bags inflate with great force and speed. Serious injuries could
occur if someone is too close. The driver should always hold onto only the
rim of the steering wheel. The front seat passenger should keep both feet
on the floor. Front seat occupants should adjust their seats as far back as
possible and always sit upright against the seatbacks with seat belts worn
properly.
Rear-facing child-restraint systems on
the front seat are particularly dangerous
even though you may feel assured that a
front passenger air bag will not deploy
based on the fact that the front passen-
ger air bag deactivation indicator light
illuminates. The child-restraint system
can be hit by a deploying air bag and
moved violently backward resulting in
serious injury or death to the child.

YARIS iA_OM_OM99Q46z_(U)
1312-8. Driving Tips
2
Before Driving
■Use snow tires on all four wheels
Do not go faster than 75 mph (120 km/h) while driving with snow
tires. Inflate snow tires 30 kPa (0.3 kgf/cm
2, 4.3 psi) more than rec-
ommended on the tire pressure label (driver’s door frame), but
never more than the maximum cold-tire pressure shown on the
tires.
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.
Check local regulations bef ore using tire chains.
Install the chains on the front tires only.
Do not use chains on the rear tires.
Please consult your Toyota dealer.
■Installing the chains If your vehicle is equipped with wheel covers remove them, oth-
erwise the chain bands will scratch them.
Secure the chains on the front tires as tightly as possible.
Always follow the chain manufacturer’s instructions.
Retighten the chains after driv ing 1/4—1/2 mile (1/2—1 km).
If your vehicle is equipped with the tire pressure monitoring system, the
system may not function correctly when using tire chains.
Snow Tires
WARNING
■Use only the same size and type tires (snow, radial, or non-radial)
on all four wheels
Using tires different in size or type is dangerous. Your vehicle’s handling
could be greatly affected and result in an accident.
NOTICE
Check local regulations before using studded tires.
Tire Chains
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3-6. ABS/TCS/DSC
Dynamic Stability Control (DSC)
DSC operation is possible at speeds greater than 12 mph (20 km/h).
The warning light turns on when the system has a malfunction.
Refer to Warning Lights on P. 157.
The Dynamic Stability Control (DSC) automatically controls
braking and engine torque in conjunction with systems such as
ABS and TCS to help control side slip when driving on slippery
surfaces, or during sudden or e vasive maneuvering, enhancing
vehicle safety.
Refer to ABS ( →P. 193) and TCS ( →P. 194).
WARNING
■Do not rely on the Dynamic Stabilit y Control as a substitute for safe
driving
The Dynamic Stability Control (DSC) cannot compensate for unsafe and
reckless driving, excessive speed, tailgating (following another vehicle too
closely), and hydroplaning (reduced tire friction and road contact because
of water on the road surface). You can still have an accident.
NOTICE
● The DSC may not operate correctly unless the following are observed:
• Use tires of the correct size specif ied for your Toyota on all four wheels.
• Use tires of the same manufacturer, brand and tread pattern on all four wheels.
• Do not mix worn tires.
● The DSC may not operate correctly when tire chains are used or a tempo-
rary spare tire is installed because the tire diameter changes.

YARIS iA_OM_OM99Q46z_(U)
2093-10. Active Safety System
3
When Driving
If the Smart City Brake Support
(SCBS) is operating, the indicator
light (red) flashes.
WARNING
■Do not modify the suspension
If the vehicle height or inclination is changed, the system will not be able to
correctly detect vehicles ahead. This will result in the Smart City Brake Sup-
port (SCBS) system not operating norma lly or mistakenly operating, which
could cause a serious accident.
■ Turn off the Smart City Brake Support (SCBS) when the vehicle is run-
ning on a chassis roller or being towed
Turn off the Smart City Brake Support (SCBS) system to prevent mistaken
operation when the vehicle is running on a chassis roller or being towed.
Refer to Stopping The Smart City Brake Support (SCBS) System Operation
on P. 210.
NOTICE
● When driving off-road in areas where there is grass or forage, it is recom-
mended that the Smart City Brake Support (SCBS) system be turned off.
● Always use tires for all wheels that are of the specified size, and the same
manufacturer, brand, and tread pattern. In addition, do not use tires with
significantly different wear patterns on the same vehicle as the Smart City
Brake Support (SCBS) system may not operate normally.
Smart City Brake Support (SCBS) Indicator Light (Red)

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YARIS iA_OM_OM99Q46z_(U)
3-12. Tire Pressure Monitoring System
NOTICE
●Each tire, including the spare (if provided), should be checked monthly
when cold and inflated to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or tire inflation pressure
label. (If your vehicle has tires of a different size than the size indicated
on the vehicle placard or tire inflation pressure label, you should deter-
mine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS) that illuminates a low tire pres-
sure telltale when one or more of your tires is significantly under-
inflated. Accordingly, when the low tire pressure telltale illuminates,
you should stop and check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to tire failure. Under-infla-
tion also reduces fuel efficiency and tire tread life, and may affect the
vehicle’s handling and stopping ability.
Please note that the TPMS is not a s ubstitute for proper tire mainte-
nance, and it is th e driver’s responsibility to maintain correct tire pres-
sure, even if under-inflation has not reached the level to trigger
illumination of the TPMS lo w tire pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indica-
tor to indicate when the system is not operating properly.
The TPMS malfunction indicator is combined with the low tire pressure
telltale. When the system detects a malfunction, the telltale will flash
for approximately one minute and then remain continuously illumi-
nated. This sequence will contin ue upon subsequent vehicle start-ups
as long as the malfunction exists . When the malfunction indicator is
illuminated, the system ma y not be able to detect or signal low tire
pressure as intended. TPMS malfunctions may occur for a variety of
reasons, including the installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS from functioning properly.
Always check the TPMS malfunction telltale after replacing one or
more tires or wheels on your vehi cle to ensure that the replacement or
alternate tires and wheels allow the TPMS to continue to function prop-
erly.
●To avoid false readings, the system samples for a little while before
indicating a problem. As a result it will not instantaneously register a
rapid tire deflation or blow out.

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YARIS iA_OM_OM99Q46z_(U)
5-3. Owner Maintenance
5
Maintenance and Care
Tires
Inspect all tire pressures monthly (including the spare) when the tires
are cold. Maintain recommended pressures for the best ride, han-
dling, and minimum tire wear.
Refer to the spec ification charts
(→P. 5 6 0).
With tire pressure monitoring system:
After adjusting the tire pressure, init ialization of the tire pressure mon-
itoring system is necessary to make the system operate normally.
Refer to Tire Pressure Monitoring System Initialization on P. 221.
For reasons of proper performance, safety, and better fuel econ-
omy, always maintain recommended tire inflation pressures and
stay within the recommended load limits and weight distribu-
tion.
WARNING
■Using Different Tire Types
Driving your vehicle with different ty pes 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 (→P. 560)
is dangerous. It could seriously affect ride, handling, ground clearance,
tire clearance, and speedometer ca libration. This could cause you to
have an accident. Use only tires that are the correct size specified for
the vehicle.
Tire Inflation Pressure

4445-3. Owner Maintenance
YARIS iA_OM_OM99Q46z_(U)
WARNING
■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.
NOTICE
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 equipped)

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YARIS iA_OM_OM99Q46z_(U)
6-2. Flat Tire
6
If Trouble Arises
Changing a Flat Tire
Park on a level surface off the right-of-way and firmly set the park-
ing brake.
Put a vehicle with an automatic transaxle in Park (P), a manual
transaxle in Reverse (R) or 1, and turn off the engine.
Turn on the hazard warning flasher.
Have everyone get out of the vehicle and away from the vehicle
and traffic.
Remove the jack, tool, and spare tire ( →P. 477).
Block the wheel diagonally
opposite the flat tire. When
blocking a wheel, place a tire
block both in front and behind
the tire.
When blocking a tire, use rocks
or wood blocks of sufficient size if
possible to hold the tire in place.
●If the following occurs wh ile driving, it could indicate a flat tire.
• Steering becomes difficult.
• The vehicle begins to vibrate excessively.
• The vehicle pulls in one direction.
●Make sure the jack is well lubricated before using it.
If you have a flat tire, drive slowly to a level spot that is well off
the road and out of the way of traffic to change the tire.
Stopping in traffic or on the shoulder of a busy road is danger-
ous.
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YARIS iA_OM_OM99Q46z_(U)
5337-7. Tire Information (U.S.A.)
7
Customer Information and Reporting Safety Defects
P215/65R15 95H 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.
● P
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).
If your tire size does not begin with a letter this may mean it is desig-
nated by either ETRTO (European Tire and Rim Technical Organiza-
tion) 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 millimeter s 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 construc tion symbol. R indicates “Radial ply construc-
tion”.
● 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.

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.