Toyota Sienna Tire care
For proper Toyota Sienna maintenance, safety, and maximum fuel economy, you must always maintain recommended tire
inflation pressures and stay within the load limits and weight distribution
recommended for your Toyota Sienna. Recommended cold tire inflation pressures All Toyota Sienna tire pressures (including the
spare) should be checked every day when the tires are cold. “Cold Tires” means the Toyota Sienna has not been driven
for at least three hours or driven less than 1.6 km (one mile). Recommended pressures must be
maintained for the best Toyota Sienna ride, top Toyota Sienna handling, and minimum tire wear.
All Toyota Sienna specifications (sizes and pressures) can be found on a label attached to the Toyota Sienna.
WARNING - Tire underinflation Severe underinflation (70 kPa (10 psi) or more) can lead to
severe heat build-up, causing blowouts, tread separation and other tire failures that can result
in the loss of Toyota Sienna control leading to severe injury or death. This risk is much higher on hot days and when driving
for protracted periods at high speeds. Underinflation also results in excessive wear, poor Toyota Sienna handling
and reduced fuel economy. Wheel deformation also is possible. Keep your tire pressures at the proper levels. If a tire frequently needs refilling,
have it checked by an Authorized Toyota Dealer Overinflation produces a harsh Toyota Sienna ride, excessive wear at
the center of the tire tread, and a greater possibility of damage from road hazards. Warm tires normally exceed
recommended cold tire pressures by 28 to 41 kPa (4 to 6 psi). Do not release air fromwarm tires to adjust the pressure
or the tires will be underinflated. Be sure to reinstall the tire inflation valve caps. Without the valve cap, dirt or moisture
could get into the valve core and cause air leakage. If a valve cap is missing, install a new one as soon as possible.
WARNING - Tire Inflation Overinflation or underinflation can reduce tire life, adversely affect Toyota Sienna handling, and lead
to sudden tire failure.This could result in loss of Toyota Sienna control and potential injury CAUTION - Tire pressure
Always observe the following: Check Toyota Sienna tire pressure when the tires are cold. (After Toyota Sienna has been parked for at least
three hours or hasn't been driven more than 1.6 km (one mile) since startup.) Check the pressure of your
spare tire each time you check the pressure of other tires. Never overload your Toyota Sienna. Be careful not to overload a
Toyota Sienna luggage rack if your Toyota Sienna is equipped with one. Worn, old tires can cause accidents. If your tread is badly
worn, or if your tires have been damaged, replace them Checking tire inflation pressure Check your Toyota Sienna tires once a month or
more.Also, check the tire pressure of the spare tire. How to check Use a good quality gage to check tire pressure.You can not tell if your Toyota Sienna tires
are properly inflated simply by looking at them. Radial tires may look properly inflated even when they're underinflated. Check the tire's inflation pressure
when the tires are cold. - "Cold" means your Toyota Sienna has been sitting for at least three hours or driven no more than 1.6 km (1 mile).
Remove the valve cap from the tire valve stem. Press the tire gage firmly onto the valve to get a pressure measurement. If the cold tire inflation
pressure matches the recommended pressure on the tire and loading Toyota Sienna information label, no further adjustment is necessary. If the pressure is
low, add air until you reach the recommended amount. If you overfill the tire, release air by pushing on the metal stem in the center of the tire valve. Recheck the tire
pressure with the tire gage. Be
sure to put the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture. Tire rotation
To equalize tread wear, it is recommended that the tires be rotated every 12,000 km (7,500 miles) or sooner if irregular wear develops.
During rotation, check the tires for correct balance. When rotating tires, check for uneven
wear and damage. Abnormal wear is usually caused by incorrect tire pressure,
improper wheel alignment, outof- balance Toyota Sienna wheels, severe braking or
severe cornering. Look for bumps or bulges in the tread or side of tire.
Replace the tire if you find either of these conditions. Replace the tire if
fabric or cord is visible. After rotation, be sure to bring the front and rear tire
pressures to specification and check Toyota Sienna lug nut tightness.
Disc brake pads should be inspected for wear whenever tires are rotated.
Rotate radial tires that have anasymmetric tread pattern only from front to rear and not from right to left.
WARNING Do not use the compact spare tire for tire rotation Do not mix bias ply and radial
ply tires under any circumstances. This may cause unusual handling characteristics
that could result in death, severe injury, or property damage.
Toyota Sienna Tire replacement
If the tire is worn evenly, a tread wear indicator will appear as a solid band across the tread. This shows there is
less than 1.6 mm (1/16 inch) of tread left on the tire. Replace the tire when
this happens. Do not wait for the band to appear across the entire tread before replacing the Toyota Sienna tire
WARNING
The Toyota Sienna ABS works by comparing the speed of the wheels.Tire size can affect wheel speed. When
replacing tires, all 4 tires must use the same size originally supplied with the Toyota Sienna. Using tires
of a different size can cause the Toyota Sienna ABS (Anti-lock Brake System) and ESC (Electronic Stability
Control) to work irregularly. Compact spare tire replacement A compact spare tire has a shorter
tread life than a regular size tire. Replace it when you can see the tread wear indicator bars on the tire.
The replacement compact spare tire should be the same size and design tire as the one provided with your
new Toyota and should be mounted on the same compact spare tire wheel. The compact spare tire is not
designed to be mounted on a regular size wheel, and the Toyota Sienna compact spare tire wheel is not designed for mounting
a regular size tire. Toyota Sienna Wheel replacement When replacing the Toyota Sienna metal wheels for
any reason, make sure the new wheels are equivalent to the original Toyota Sienna factory units in diameter, rim width and offset.
WARNING
A wheel that is not the correct size may adversely affect Toyota Sienna wheel and bearing life, braking and
stopping abilities, handling characteristics, ground clearance, body-to-tire clearance, snow
chain clearance, speedometer calibration, headlight aim and bumper height. Wheel alignment and tire
balance The wheels on your Toyota Sienna were aligned and balanced carefully at the
factory to give you the longest tire life and best overall performance. In most cases, you will not need to
have your Toyota Sienna wheels aligned again. However, if you notice unusual tire wear or your Toyota Sienna pulling one way
or the other, the alignment may need to be reset. If you notice your Toyota Sienna vibrating when driving on a smooth road, your
wheels may need to be rebalanced.
CAUTION
Improper wheel weights can damage your Toyota Sienna's aluminum wheels. Use only approved wheel weights.
WARNING - Replacing tires Driving on worn-out tires is very hazardous and will reduce
braking effectiveness, steering accuracy, and traction. Your Toyota Sienna is equipped with
tires designed to provide for safe ride and handling capability. tire and wheel that is different from the one that is originally
installed on your Toyota Sienna. It can affect the safety and performance of your Toyota Sienna, which could lead to handling failure
or rollover and serious injury. When replacing the tires, be sure to equip all four tires with the tire and wheel of the same
size, type, tread, brand and load-carrying capacity. The use of any other tire size or type may seriously affect
ride, handling, ground clearance, stopping distance, body to tire clearance, snow tire clearance, and speedometer
reliability. It is best to replace all four Toyota Sienna tires at the same time. If that is not possible, or necessary, then
replace the two front or two rear tires as a pair. Replacing just one tire can seriously affect your Toyota Sienna’s handling.
Toyota Sienna Tire traction Tire traction can be reduced if you drive on worn tires, tires that are
improperly inflated or on slippery road surfaces. Tires should be replaced when tread wear indicators
appear. To reduce the possibility of losing control, slow down whenever
there is rain, snow or ice on the road. Toyota Sienna Tire maintenance
In addition to proper inflation, correct wheel alignment helps to decrease
tire wear. If you find a tire is worn unevenly, have your dealer check the
wheel alignement. When you have new tires installed,
make sure they are balanced. This will increase Toyota Sienna ride comfort and
tire life. Additionally, a tire should
always be rebalanced if it is removed
from the wheel.
Tire sidewall labeling
Federal law requires tire manufacturers
to place standardized information
on the sidewall of all tires. This information
identifies and describes the
fundamental characteristics of the
tire and also provides the tire identification
number (TIN) for safety standard
certification. The TIN can be
used to identify the tire in case of a
recall.
1. Manufacturer or brand name
Manufacturer or Brand name is
shown.
A tire’s sidewall is marked with a tire
size designation. You will need this
information when selecting replacement
tires for your car. The following
explains what the letters and numbers
in the tire size designation
mean.
Example tire size designation:
(These numbers are provided as an
example only; your tire size designator
could vary depending on your
Toyota Sienna.)
P185/65R14 86H
P - Applicable Toyota Sienna type (tires
marked with the prefix “P’’ are
intended for use on passenger
cars or light trucks; however, not
all tires have this marking).
185 - Tire width in millimeters.
65 - Aspect ratio. The tire’s section
height as a percentage of its
width.
R - Tire construction code (Radial).
14 - Rim diameter in inches.
86 - Load Index, a numerical code
associated with the maximum
load the tire can carry.
H - Speed Rating Symbol. See the
speed rating chart in this section
for additional information.
Wheel size designation
Wheels are also marked with important
information that you need if you
ever have to replace one. The following
explains what the letters and
numbers in the wheel size designation
mean.
Example Toyota Sienna wheel size designation:
5.5JX14
5.5 - Rim width in inches.
J - Rim contour designation.
14 - Rim diameter in inches
Tire speed ratings
The chart below lists many of the different
speed ratings currently being
used for passenger cars. The speed
rating is part of the tire size designation
on the sidewall of the tire. This
symbol corresponds to that tire's
designed maximum safe operating
speed.S 180 km/h (112 mph)
T 190 km/h (118 mph)
H 210 km/h (130 mph)
V 240 km/h (149 mph)
Z Above 240 km/h (149 mph)
3. Checking tire life (TIN : Tire
Identification Number)
Any tires that are over 6 years, based
on the manufacturing date, tire
strength and performance, decline
with age naturally (even unused
spare tires). Therefore, the tires
(including the spare tire) should be
replaced by new ones. You can find
the manufacturing date on the tire
sidewall (possibly on the inside of the
wheel), displaying the DOT Code.
The DOT Code is a series of numbers
on a tire consisting of numbers
and English letters. The manufacturing
date is designated by the last four
digits (characters) of the DOT code.
DOT : XXXX XXXX OOOO
The front part of the DOT means a
plant code number, tire size and
tread pattern and the last four numbers
indicate week and year manufactured.
For example:
DOT XXXX XXXX 1611 represents
that the tire was produced in the 16th
week of 2011.
WARNING - Tire age
Tires degrade over time, even
when they are not being used.
Regardless of the remaining
tread, it is recommended that
tires generally be replaced after
six (6) years of normal service.
Heat caused by hot climates or
frequent high loading conditions
can accelerate the aging
process. Failure to follow this
warning can result in sudden tire
failure, which could lead to a
loss of control and an accident
involving serious injury or death.
4. Tire ply composition and material
The number of layers or plies of rubber-
coated fabric in the tire. Tire
manufacturers also must indicate the
materials in the tire, which include
steel, nylon, polyester, and others.
The letter "R" means radial ply construction;
the letter "D" means diagonal
or bias ply construction; and the
letter "B" means belted-bias ply construction.
5. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tire. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tire and Loading Information
label for recommended inflation
pressure.
6. Toyota Sienna Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tire. When
replacing the tires on the Toyota Sienna,
always use a tire that has the same
load rating as the factory installed
tire.
7. Uniform tire quality grading
Quality grades can be found where
applicable on the tire sidewall
between tread shoulder and maximum
section width.
For example:
TREADWEAR 200
TRACTION AA
TEMPERATURE A
Tread wear
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-ahalf
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, performance
may differ from the norm because of
variations in driving habits, service
practices and differences in road
characteristics and climate.
These grades are molded on the
side-walls of passenger Toyota Sienna tires.
The tires available as standard or
optional equipment on Toyota Toyota Siennas
may vary with respect to grade.
Traction - AA, A, B & C
The traction grades, from highest to
lowest, are AA, A, B and C. The
grades represent the tires 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 -A, B & C
The temperature grades are A (the
highest), B and C. The grades 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 laboratory test wheel.
Sustained high temperature can
cause the material of the tires to
degenerate and reduce tires life, and
excessive temperature can lead to
sudden tires failure. Grades A and B
represent higher levels of performance
on the laboratory test wheel than
the minimum required by the law.Tire
temperature
The temperature grade for this
tire is established for a tire that
is properly inflated and not
overloaded. Excessive speed,
underinflation, or excessive
loading, either separately or in
combination, can cause heat
build-up and possible sudden
tire failure. This can cause loss
of Toyota Sienna control and serious
injury or death.
Tire terminology and definitions
Air Pressure: The amount of air
inside the tire pressing outward on
the tire. Air pressure is expressed in
kilopascal (kPa) or pounds per
square inch (psi).
Accessory Weight: This means the
combined weight of optional accessories.
Some examples of optional
accessories are, automatic transmission,
power seats, and air conditioning.
Aspect Ratio: The relationship of a
tire's height to its width.
Belt: A rubber coated layer of cords
that is located between the plies and
the tread. Cords may be made from
steel or other reinforcing materials.
Bead: The tire bead contains steel
wires wrapped by steel cords that
hold the tire onto the rim.
Bias Ply Tire: A pneumatic tire in
which the plies are laid at alternate
angles less than 90 degrees to the
centerline of the tread.
Cold Tire Pressure: The amount of
air pressure in a tire, measured in
kilopascals (kPa) or pounds per
square inch (psi) before a tire has
built up heat from driving.
Curb Weight: This means the weight
of a Toyota Sienna with standard and
optional equipment including the
maximum capacity of fuel, oil and
coolant, but without passengers and
cargo.
DOT Markings: The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric designator
which can also identify the
tire manufacturer, production plant,
brand and date of production.
GVWR: Gross Toyota Sienna Weight Rating
GAWR FRT: Gross Axle Weight
Rating for the front Axle.
GAWR RR: Gross Axle Weight
Rating for the rear axle.
Intended Outboard Sidewall: The
side of an asymmetrical tire, that
must always face outward when
mounted on a Toyota Sienna.
Kilopascal (kPa): The metric unit for
air pressure.
Load Index: An assigned number
ranging from 1 to 279 that corresponds
to the load carrying capacity
of a tire.
Maximum Inflation Pressure: The
maximum air pressure to which a
cold tire may be inflated. The maximum
air pressure is molded onto the
sidewall.
Maximum Load Rating: The load
rating for a tire at the maximum permissible
inflation pressure for that
tire.
Maximum Loaded Toyota Sienna Weight:
The sum of curb weight; accessory
weight; Toyota Sienna capacity weight; and
production options weight.
Normal Occupant Weight: The
number of occupants a Toyota Sienna is
designed to seat multiplied by 68 kg
(150 pounds).
Occupant Distribution: Designated
seating positions.
Outward Facing Sidewall: The side
of a asymmetrical tire that has a particular
side that faces outward when
mounted on a Toyota Sienna. The outward
facing sidewall bears white lettering
or bears manufacturer, brand, and/or
model name molding that is higher or
deeper than the same moldings on
the inner facing sidewall.
Passenger (P-Metric) Tire: A tire
used on passenger cars and some
light duty trucks and multipurpose
Toyota Siennas.
Recommended Inflation Pressure:
Toyota Sienna manufacturer's recommended
tire inflation pressure and shown
on the tire placard.
Radial Ply tire: A pneumatic tire in
which the ply cords that extend to the
beads are laid at 90 degrees to the
centerline of the tread.
Rim: A metal support for a tire and
upon which the tire beads are seated.
Sidewall: The portion of a tire
between the tread and the bead.
Speed Rating: An alphanumeric
code assigned to a tire indicating the
maximum speed at which a tire can
operate.
Traction: The friction between the
tire and the road surface. The
amount of grip provided.
Tread: The portion of a tire that
comes into contact with the road.
Treadwear Indicators: Narrow
bands, sometimes called "wear
bars," that show across the tread of a
tire when only 2/32 inch of tread
remains.
UTQGS: Uniform Tire Quality
Grading Standards, a tire information
system that provides consumers with
ratings for a tire's traction, temperature
and treadwear. Ratings are
determined by tire manufacturers
using government testing procedures.
The ratings are molded into
the sidewall of the tire.
Toyota Sienna Capacity Weight: The number
of designated seating positions
multiplied by 68 kg (150 lbs.) plus the
rated cargo and luggage load.
Toyota Sienna Maximum Load on the
Tire: Load on an individual tire due to
curb and accessory weight plus
maximum occupant and cargo
weight.
Toyota Sienna Normal Load on the Tire:
That load on an individual tire that is
determined by distributing to each
axle its share of the curb weight,
accessory weight, and normal occupant
weight and driving by 2.
Toyota Sienna Placard: A label permanently
attached to a Toyota Sienna showing the
original equipment tire size and recommended
inflation pressure.
All season tires
Toyota specifies all season tires on
some models to provide good performance
for use all year round,
including snowy and icy road conditions.
All season tires are identified
by ALL SEASON and/or M+S (Mud
and Snow) on the tire sidewall. Snow
tires have better snow traction than
all season tires and may be more
appropriate in some areas.
Summer tires
Toyota specifies summer tires on some
models to provide superior performance
on dry roads. Summer tire performance
is substantially reduced in
snow and ice. Summer tires do not
have the tire traction rating M+S
(Mud and Snow) on the tire side wall.
if you plan to operate your Toyota Sienna in
snowy or icy conditions. Toyota recommends
the use of Toyota Sienna snow tires or all
season tires on all four wheels.
Snow tires
If you equip your Toyota Sienna with snow tires,
they should be the same size and
have the same load capacity as the
original tires. Snow tires should be
installed on all four Toyota Sienna wheels; otherwise,
poor handling may result.
Snow tires should carry 28 kPa (4
psi) more air pressure than the pressure
recommended for the standard tires on the tire label on the driver's side of the center pillar, or up to the maximum pressure shown on the tire sidewall, whichever is less.
Do not drive faster than 120 km/h (75 mph) when your Toyota Sienna is equipped with snow tires.
