2018 TOYOTA YARIS iA Owners Manual (in English)

YARIS iA_OM_OM99Q46z_(U)
5377-7. Tire Information (U.S.A.)
7
Customer Information and Reporting Safety Defects
●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 sp eed rating denotes the maximum
speed for which the use of the tire is rated.
Letter RatingSpeed Rating
M81 mph

538
YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
Location of the Tire Label (Placard)
You will find the tire label containing tire inflation pressure by tire size
and other important inform ation on the driver’s side B-pillar or on the
edge of the driver’s door frame.
SAMPLE
On the tire label you will find th e recommended tire inflation pressure
in both kPa and psi for the tires installed as original equipment on the
vehicle. It is very important that the inflation pressure of the tires on
your vehicle is maintained at the recommended pressure. You should
check the tire pressure regularly to insure that the proper inflation
pressure is maintained. Refer to Tires on P. 560.
Tire pressures listed on the vehicle placard or tire information label indi-
cate the recommended cold tire inflation pressure, measured when the
tires are cold, after the vehicle has been parked for at least 3 hours. As
you drive, the temperature in the tire warms up, increasing the tire pres-
sure.
Recommended Tire Inflation Pressure

YARIS iA_OM_OM99Q46z_(U)
5397-7. Tire Information (U.S.A.)
7
Customer Information and Reporting Safety Defects
When you check the air pressure, make sure the tires are cold -
meaning they are not hot from driving even a mile.
Remove the cap from the valve on one tire.
Firmly press a tire gauge onto the valve.
Add air to achieve recommended air pressure.
If you overfill the tire, release ai r by pushing on the metal stem in
the center of the valve. Then recheck the pressure with your tire
gauge.
Replace the valve cap.
Repeat with each tire, including the spare.
Visually inspect the tires to make sure there are no nails or other
objects embedded that could poke a hole in the tire and cause an
air leak.
Check the sidewalls to make sure there are no gouges, cuts,
bulges, cracks or other irregularities.
Some spare tires require higher inflation pressure.
WARNING
■Always check the tire inflation pressures on a regular basis accord-
ing to the recommended tire inflation pressure on the tire label and
in conjunction with the information in this owner’s manual
Driving your vehicle with under-inflated tires is dangerous.
Under-inflation is the most common c ause of failures in any kind of tire
and may result in severe cracking, tread separation or “blowout”, with
unexpected loss of vehicle control and increased risk of injury. Under-
inflation increases side wall flexing and rolling resistance, resulting in
heat buildup and internal damage to the tire. It results in unnecessary
tire stress, irregular wear , loss of control and accidents. A tire can lose
up to half of its air pressure and not appear to be flat!
It is impossible to de termine whether or not tires are properly inflated
just by looking at them.
Checking Tire Pressure
1
2
3
4
5
6
7
8
9

540
YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
●Tire Placard: A label indicating the OE tire sizes, recommended
inflation pressure, and the maximu m weight the vehicle can carry.
● Tire Identification Number (TIN): A number on the sidewall of each
tire providing information about the tire brand and manufacturing
plant, tire size, and date of manufacture.
● Inflation Pressure: A measure of the amount of air in a tire.
● kPa: Kilopascal, the metric unit for air pressure.
● psi: Pounds per square inch, the English unit for air pressure.
● B-pillar: The structural member at the side of the vehicle behind the
front door.
● Original Equipment (OE): De scribes components originally
equipped on the vehicle.
● Vehicle Load Limit: The maximum value of the combination weight
of occupants and cargo.
● Bead Area of the Tire: Area of the tire next to the rim.
● Sidewall Area of the Tire: Area between the bead area and the
tread.
● Tread Area of the Tire: Area on the perimeter of the tire that con-
tacts the road when it’s mounted on the vehicle.
● Seating capacity means the total a llowable number of vehicle occu-
pants. Seating capacity is described on the tire label.
● Production options weight is the combination weight of installed
regular production options weighing over 2.3 kilograms in excess of
the standard items which they replace, and not previously consid-
ered in the curb weight or accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty battery, and special trim.
● Rim is the metal support (wheel) for a tire or a tire and tube assem-
bly upon which the tire beads are seated.
Glossary of Terms

541
YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
7
Customer Information and Reporting Safety Defects
Tire Maintenance
Improper or inadequate vehicle maintenance can cause tires to wear
abnormally. Here are some important maintenance points:
Inspect all tire pressure monthly (including the spare) when the tires
are cold. Maintain recommended pressures for the best ride, top han-
dling, and minimum tire wear. Use the pressures specified on the
vehicle tire information placard or tire label for optimum service.
To equalize tire wear and extend
tire life, Toyota recommends that
tire rotation is carried out at the
same interval as tire inspection.
Inspect the tires for uneven wear and damage. Abnormal wear is usu-
ally caused by one or a co mbination of the following:
• Incorrect tire pressure
• Improper wheel alignment
• Out-of-balance wheel
• Severe braking
After rotation, inflate all tire pressures to specification ( →P. 560) and
inspect the lug nu ts for tightness.
Tire Inflation Pressure
Tire Rotation
Do not include
(TEMPORARY USE ONLY)
spare tire in rotation.
Forward
NOTICE
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 weakened if ro tated from side to side.

542
YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
If a tire wears evenly, a wear indicator will appear as a solid band
across the tread. Replace the tire when this happens.
You should replace the tire before the band crosses the entire tread.
New tread
Worn tread
Tread wear indicator
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 indi-
cated by a 4-digit number.
Refer to Tire Labeling on P. 532.
The way you drive has a great deal to do with your tire mileage and
safety. So cultivate good driving habits for your own benefit. • Observe posted speed limits and drive at speeds that are safe for the existing weather conditions
• Avoid fast starts, stops and turns
• Avoid potholes and objects on the road
• Do not run over curbs or hit the tire against the curb when parking
Replacing a Tire
1
2
3
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.
Safety Practices

YARIS iA_OM_OM99Q46z_(U)
5437-7. Tire Information (U.S.A.)
7
Customer Information and Reporting Safety Defects
NOTICE
If you feel a sudden vibration or ride disturbance while driving or you
suspect your tire or vehicle has been damaged, immediately reduce
your speed. Drive with caution until you can safely pull off the road. Stop
and inspect the tire for damage. If the tire is under-inflated or damaged,
deflate it, remove the tire and rim a nd replace it with your spare tire. If
you cannot detect a cause, have th e vehicle towed to the nearest vehi-
cle or tire dealer to have the vehicle inspected.

544
YARIS iA_OM_OM99Q46z_(U)
7-7. Tire Information (U.S.A.)
Vehicle Loading
This section will guide you in the proper loading of your vehicle, to
keep your loaded vehicle weight with in its design rating capability.
Properly loading your vehicle will provide maximum return of vehicle
design performance. Before loading your vehicle, familiarize yourself
with the following terms for determining your vehicle’s weight ratings,
from the vehicle’s Safety Certific ation Label and Tire and Load Infor-
mation Label:
Base Curb Weight is the weight of the vehicle including a full tank of
fuel and all standard equipment. It does not include passengers,
cargo, or optional equipment.
Vehicle Curb Weight is the weight of your new vehicle when you
picked it up from your dealer plus any aftermarket equipment.
Payload is the combination weight of cargo and passengers that the
vehicle is designed to carry. The maximum payload for your vehicle
can be found on the Tire and Load Information label on the driver’s
door frame or door pillar. Look for “THE COMBINATION WEIGHT OF
OCCUPANTS AND CARGO SHOULD NEVER EXCEED XXX kg or
XXX lb.” for your maximum payload. The payload listed on the tire
label is the maximum payload for t he vehicle as built by the assembly
plant. If any aftermarket or de aler installed equipment has been
installed on the vehicle, the weig ht of the equipment must be sub-
tracted from the payload listed on the tire label in order to be accurate.
PAY L O A D