tire size TOYOTA PRIUS PRIME 2023 User Guide

4315-6. Driving tips
5
Driving
If the vehicle is parked without
setting the parking brake,
confirm that the shift position
cannot be moved out of P.
 If the vehicle is left parked
with the brakes damp in cold
temperatures, there is a pos-
sibility of the brakes freezing.
Vehicles without 195/50R19
tires
Use the correct tire chain size
when mounting the tire chains.
Chain size is regulated for each
tire size.
Side chain:
0.12 in. (3 mm) in diameter
0.39 in. (10 mm) in width
1.18 in. (30 mm) in length
Cross chain: 0.16 in. (4 mm) in diameter
0.55 in. (14 mm) in width
0.98 in. (25 mm) in length
Vehicles with 195/50R19 tires
Tire chains cannot be mounted.
Snow tires should be used
instead.
Regulations regarding the use
of tire chains vary depending on
location and type of road.
Always check local regulations
before installing chains.
■Tire chain installation
Observe the following precautions
when installing and removing
chains:
●Install and remove tire chains in a
safe location.
●Install tire chains on the front tires
only. Do not install tire chains on
the rear tires.
●Install tire chains on front tires as
tightly as possible. Retighten
chains after driving 1/4 - 1/2 mile
(0.5 - 1.0 km).
●Install tire chains following the
instructions provid ed with the tire
chains.
WARNING
■When parking the vehicle
When parking the vehicle without
applying the parking brake, make
sure to chock the wheels. If you
do not chock the wheels, the vehi-
cle may move unexpectedly, pos-
sibly resulting in an accident.
Selecting tire chains
A
B
C
Regulations on the use of
tire chains (except
195/50R19 tires)
NOTICE
■Fitting tire chains
The tire pressure warning valves
and transmitters may not function
correctly when tire chains are fit-
ted.
D
E
F

5147-3. Do-it-yourself maintenance
indicators are showing on a tire.
■When to replace your vehicle’s
tires
Tires should be replaced if:
●The treadwear indicators are
showing on a tire.
●You have tire damage such as
cuts, splits, cracks deep enough
to expose the fabric, and bulges
indicating internal damage
●A tire goes flat repeatedly or can-
not be properly repaired due to
the size or location of a cut or
other damage
If you are not sure, consult your
Toyota dealer.
■Tire life
Any tire over 6 years old must be
checked by a qualified technician
even if it has seldom or never been
used or damage is not obvious.
■Low profile tires (vehicles with
195/50R19 tires)
Generally, low profile tires will wear
more rapidly and tire grip perfor-
mance will be reduced on snowy
and/or icy roads when compared to
standard tires. Be sure to use snow
tires on snowy and/or icy roads and
drive carefully at a speed appropri-
ate for road and weather conditions.
■Maximum load of tire
Check that the maximum load of the
replacement tire is greater than 1/2
of the Gross Axle Weight Ratings
(GAWR) of either the front axle or
the rear axle, whic hever is greater.
For the GAWR, see the Certification
Label. For the maximum load of the
tire, see the load limit at maximum
cold tire inflation pressure men-
tioned on the sidewall of the tire.
(  P.609)
■Tire types
●Summer tires
Summer tires are high-speed per-
formance tires best suited to high-
way driving under dry conditions.
Since summer tires do not have
the same traction performance as
snow tires, summer tires are inad-
equate for driving on snow-cov-
ered or icy roads. For driving on
snow-covered roads or icy roads,
the use of snow tires is recom-
mended. When installing snow
tires, be sure to replace all four
tires.
●All season tires
All season tires are designed to
provide better traction in snow and
to be adequate for driving in most
winter conditions as well as for
use year-round. All season tires,
however, do not have adequate
traction performance compared
with snow tires in heavy or loose
snow. Also, all season tires fall
short in acceleration and handling
performance compared with sum-
mer tires in highway driving.
●Snow tires
For driving on snow-covered
roads or icy roads, we recom-
mend using snow tires. If you
need snow tires, select tires of the
same size, construction and load
capacity as the originally installed
tires. Since your vehicle has radial
tires as original equipment, make
sure your snow tires also have
radial construction. Do not install
studded tires without first checking
local regulation s for possible
restrictions. Snow tires should be
installed on all wheels. ( P.429)

5157-3. Do-it-yourself maintenance
7
Maintenance and care
■If the tread on snow tires wears
down below 0.16 in. (4 mm)
The effectiveness of the tires as
snow tires is lost.
Rotate the tires in the order
shown.
To equalize tire wear and extend
tire life, Toyota recommends that
tire rotation is carried out at the
same interval as tire inspection.
Do not fail to initia lize the tire pres-
sure warning system after tire rota-
WARNING
■When inspecting or replacing
tires
Observe the following precautions
to prevent accidents.
Failure to do so may cause dam-
age to parts of the drivetrain as
well as dangerous handling char-
acteristics, which may lead to an
accident resulting in death or seri-
ous injury.
●Do not mix tires of different
makes, models or tread pat-
terns.
Also, do not mix tires of remark-
ably different treadwear.
●Do not use tire sizes other than
those recommended by Toyota.
●Do not mix differently con-
structed tires (radial, bias-belted
or bias-ply tires).
●Do not mix summer, all season
and snow tires.
●Do not use tires that have been
used on another vehicle.
Do not use tires if you do not
know how they were used previ-
ously.
NOTICE
■Driving on rough roads
Take particular care when driving
on roads with loose surfaces or
potholes.
These conditions may cause
losses in tire in flation pressure,
reducing the cushioning ability of
the tires. In addition, driving on
rough roads may cause damage
to the tires themselves, as well as
the vehicle’s wheels and body.
■Low profile tires (vehicles
with 195/50R19 tires)
Low profile tires may cause
greater damage than usual to the
tire wheel when sustaining impact
from the road surface. Therefore,
pay attention to the following:
●Be sure to use proper tire infla-
tion pressure. If tires are under-
inflated, they may be damaged
more severely.
●Avoid potholes, uneven pave-
ment, curbs and other road haz-
ards. Failure to do so may lead
to severe tire and wheel dam-
age.
■If tire inflation pressure of
each tire becomes low while
driving
Do not continue driving, or your
tires and/or wheels may be
ruined.
Tire rotation

5177-3. Do-it-yourself maintenance
7
Maintenance and care
3Use the meter control
switches ( P.162) to select
(  P.166).
4 Use the meter control
switches to select , then
press and hold .
5 Use the meter control
switches to select “TPWS
setting”, then press .
6 Use the meter control
switches to select “Pressure
unit setting”, then press .
7 Use the meter control
switches to select the desired
unit and then press .
■Routine tire inflation pressure
checks
The tire pressure warning system
does not replace routine tire inflation
pressure checks. Make sure to
check tire inflation pressure as part
of your routine of daily vehicle
checks.
■Tire inflation pressure
●It may take a few minutes to dis-
play the tire inflation pressure
after the power switch is turned to
ON.
It may also take a few minutes to
display the tire in flation pressure
after inflation pressure has been
adjusted.
●Tire inflation pressure changes
with temperature. The displayed
values may also be different from
the values measured using a tire
pressure gauge.
■Situations in which the tire
pressure warning system may
not operate properly
●In the following cases, the tire pressure warning system may not
operate properly.
• If non-genuine Toyota wheels are
used.
• A tire has been replaced with a tire that is not an OE (Original
Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the
wheels or wheel housings.
• If the tire inflation pressure is extremely higher than the speci-
fied level.
• If wheel without tire pressure
warning valves and transmitters
are used.
• If the ID code on the tire pressure warning valves and transmitters is
not registered in the tire pressure
warning computer.
●Performance may be affected in
the following situations.
• Near a TV tower, electric power plant, gas station, radio station,
large display, airport or other facil-
ity that generates strong radio
waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or
other wireless communication
device
If tire position in formation is not cor-
rectly displayed due to the radio
wave conditions, the display may be
corrected by changing the location
of the vehicle as the radio wave
conditions may change.
●When the vehicle is parked, the
time taken for the warning to start
or go off could be extended.
●When tire inflation pressure
declines rapidly for example when
a tire has burst, the warning may
not function.

5207-3. Do-it-yourself maintenance
■If the wheel position cannot be
registered easily
●In the following situations, wheel
position registration may take lon-
ger than usual to be completed or
may not be possible.
• Vehicle is not driven at approxi- mately 25 mph (40 km/h) or more
• Vehicle is driven on unpaved roads
• If wheel position registration does
not complete afte r driving for 1
hour or more, park the vehicle in a
safe place for approximately 15
minutes and then drive the vehicle
again.
●If the vehicle is reversed during
wheel position registration, all
data collected until then will be
cleared. Perform driving again.
In the following situations, it will
be necessary to perform the tire
inflation pressure setting proce-
dure of the tire pressure warning
system.
 When the specified tire infla-
tion pressure has changed,
such as due to carried load,
etc.
 When the tire inflation pres-
sure is changed such as
when the tire size is changed.
If the tire inflation pressure has
been adjusted to the specified
level, perform the tire inflation set-
ting procedure by selecting speci-
fied inflation pressure on the multi-
information display.
When the tire inflation pressure is
to be other than specified, such as
when tires other than the specified
size are used, etc., set the tire infla- tion pressure using the current
pressure. Make sure
to adjust the
tire inflation pressure of each tire to
the appropriate level before per-
forming tire pressure setting. The
tire pressure wa rning system oper-
ates based on this tire inflation
pressure.
■Setting by selecting a spec-
ified tire inflation pressure
1 Start the hybrid system.
The tire inflation pressure cannot
be set while the vehicle is moving.
2Use the meter control
switches ( P.162) to select
. (  P.166)
3 Use the meter control
switches to select , then
press and hold .
4 Use the meter control
switches to select “TPWS
setting”, then press .
5 Use the meter control
switches to select “Tire Pres-
sure Setting”, then press .
6 Use the meter control
switches to select “Setting by
Specified Pressure”, then
press .
7 Use the meter control
switches to select the desired
tire pressures, then press .
The tire pressure warning light will
slowly blink 3 times.
After setting the tire inflation pres-
sure, a message indicating that set-
ting has been co mpleted will be
displayed on the multi-information
Setting the tire pressure

5327-3. Do-it-yourself maintenance
The recommended cold tire
inflation pressure and tire size
are displayed on the tire and
loading information label.
(P.605) Tire valve
Tire pressure gauge
1 Remove the tire valve cap.
2 Press the tip of the tire pres-
sure gauge onto the tire
valve.
3 Read the pressure using the
gauge gradations.
4 If the tire inflation pressure is
not at the recommended
level, adjust the pressure. If
you add too much air, press
the center of the valve to
deflate.
5 After completing the tire infla-
tion pressure measurement
and adjustment, apply soapy
water to the valve and check
for leakage.
6 Put the tire valve cap back
on.
■Tire inflation pressure check
interval
You should check tire inflation pres-
sure every two weeks, or at least
once a month.
Tire inflation pressure
Make sure to maintain the
proper tire inflation pres-
sure. Tire inflation pressure
should be checked at least
once per month. However,
Toyota recommends that
tire inflation pressure be
checked once every two
weeks. ( P.605)
Checking the specified
tire inflation pressure
Inspection and adjust-
ment procedure
A
B

5347-3. Do-it-yourself maintenance
When replacing wheels, care
should be taken to ensure that
they are equivalent to those
removed in load capacity, diam-
eter, rim width and inset
*.
Replacement wheels are avail-
able at your Toyota dealer.
*: Conventionally referred to as off- set.
Toyota does not recommend
using the following:
 Wheels of different sizes or
types
 Used wheels
 Bent wheels that have been
straightened
■When replacing wheels
The wheels of your vehicle are
equipped with tire pressure warning
valves and transmitters that allow
the tire pressure warning system to
provide advance warning in the
event of a loss in tire inflation pres-
sure. Whenever wheels are
replaced, tire pressure warning
valves and transmitters must be
installed. ( P.532, 535)
Wheels
If a wheel is bent, cracked or
heavily corroded, it should
be replaced. Otherwise, the
tire may separate from the
wheel or cause a loss of
handling control.
Wheel selection
WARNING
■When replacing wheels
●Do not use wheels that are a dif-
ferent size from those recom-
mended in the Owner’s Manual,
as this may result in a loss of
handling control.
●Never use an inner tube in a
leaking wheel which is designed
for a tubeless tire. Doing so may
result in an accident, causing
death or serious injury.
■When installing the wheel
nuts
●Be sure to install the wheel nuts
with the tapered ends facing
inward. ( P.530)
Installing the nuts with the
tapered ends facing outward
can cause the wheel to break
and eventually cause the wheel
to come off while driving, which
could lead to an accident result-
ing in death or serious injury.
●Never use oil or grease on the
wheel bolts or wheel nuts. Oil
and grease may cause the
wheel nuts to be excessively
tightened, leading to bolt or disc
wheel damage. In addition, the
oil or grease can cause the
wheel nuts to loosen and the
wheel may fall off, causing an
accident and resulting in death
or serious injury. Remove any
oil or grease from the wheel
bolts or wheel nuts.
■Use of defective wheels pro-
hibited
Do not use cracked or deformed
wheels.
Doing so could cause the tire to
leak air during driving, possibly
causing an accident.

5648-2. Steps to take in an emergency
■The tire pressure warning light
may come on due to natural
causes
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this case, adjusting the
tire inflation pressure will turn off the
warning light (after a few minutes).
■Conditions that the tire pres-
sure warning system may not
function properly
 P.517
WARNING
■If a warning light comes on or
a warning buzzer sounds
when a warning message is
shown on the multi-informa-
tion display
*
Check and follow the message
shown on the multi-information
display.
Failure to do so may result in
death or serious injury.
*: Warning lights illuminate in red
or yellow and the warning
buzzer beeps once or sounds
continuously.
■When the electric power
steering system warning light
comes on
When the light comes on yellow,
the assist to the power steering is
restricted. When the light comes
on red, the assist to the power
steering is lost and handling oper-
ations of the steering wheel
become extremely heavy.
If the steering wheel becomes
heavier than usual when operat-
ing, hold firmly and operate using
more force than usual.
■If the tire pressure warning
light comes on
Be sure to observe the following
precautions. Failure to do so
could cause a loss of vehicle con-
trol and result in death or serious
injury.
●Stop your vehicle in a safe
place as soon as possible.
Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light
comes on even after tire infla-
tion pressure adjustment, it is
probable that you have a flat
tire. Check the tires. If a tire is
flat, repair the flat tire by using
emergency tire puncture repair
kit.
●Avoid abrupt maneuvering and
braking. If the vehicle tires dete-
riorate, you could lose control of
the steering wheel or the
brakes.
■If a blowout or sudden air
leakage should occur
The tire pressure warning system
may not activate immediately.
■Maintenance of the tires
Each tire, includ ing the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recom-
mended by the vehicle manufac-
turer on the vehicle placard or tire
inflation pressure label (tire and
load information label). (If your
vehicle has tires of a different size
than the size indicated on the
vehicle placard or tire inflation
pressure label [tire and load infor-
mation label], you should deter-
mine the proper tire inflation
pressure for those tires.)

5768-2. Steps to take in an emergency
■BottleSticker
■Compressor
Air pressure gauge
Compressor switch
Power plug
Hose
Air release cap
■Note for checking the emer-
gency tire puncture repair kit
Check the sealant expiry date occa-
sionally. The expiry date is shown
on the bottle. Do not use sealant
whose expiry date has already
passed. Otherwise, repairs con-
ducted using the emergency tire
puncture repair kit may not be per-
formed properly.
■Emergency tire puncture repair
kit
●The emergency tire puncture
repair kit is for filling the car tire
with air.
●The sealant has a limited life
span. The expiry date is marked
on the bottle. The sealant should
be replaced before the expiry
date. Contact your Toyota dealer.
●The sealant stored in the emer-
gency tire puncture repair kit can
be used only once to temporarily
repair a single tire. If the sealant in
the bottle and other parts of the kit
have been used and need to be
replaced, contact your Toyota
dealer.
●The compressor can be used
repeatedly.
●The sealant can be used when the
outside temperature is from -40°C
(-40°F) to 60°C (140°F).
●The kit is exclusively designed for
size and type of tires originally
installed on your vehicle. Do not
use it for tires that a different size
than the original ones, or for any
other purposes.
●If the sealant gets on your clothes,
it may stain.
●If the sealant adheres to a wheel
or the surface of the vehicle body,
the stain may not be removable if
it is not cleaned at once. Immedi-
ately wipe away the sealant with a
wet cloth.
●During operation of the repair kit,
a loud operation noise is pro-
Emergency tire puncture
repair kit components
A
A
B
C
D
E

5778-2. Steps to take in an emergency
8
When trouble arises
duced. This does not indicate a
malfunction.
●Do not use to check or to adjust
the tire pressure.
1Open the deck board.
( P.454).
2 Take out the emergency tire
puncture repair kit.
1 Take out the repair kit from
the plastic bag.
Attach the sticker enclosed with the
bottle on the specified locations.
(See step 10.)
2Pull out the hose and power
plug from the bottom side of
the compressor.
3 Connect the bottle to the
compressor.
Make sure to press the bottle until
its claws are securely engaged to
the compressor and no longer visi-
WARNING
■Do not drive the vehicle with
a flat tire
Do not continue driving with a flat
tire. Driving even a short distance
with a flat tire can damage the tire
and the wheel beyond repair.
Driving with a flat tire may cause a
circumferential groove on the side
wall. In such a case, the tire may
explode when using a repair kit.
■Caution while driving
●Store the repair kit in the lug-
gage compartment.
Injuries may result in the event
of an accident or sudden brak-
ing.
●The repair kit is exclusively only
for your vehicle.
Do not use repair kit on other
vehicles, which could lead to an
accident causing death or seri-
ous injury.
●Do not use repair kit for tires
that are different size than the
original ones, or for any other
purpose. If the tires have not
been completely repaired, it
could lead to an accident caus-
ing death or serious injury.
■Precautions for use of the
sealant
●Ingesting the sealant is hazard-
ous to your health. If you ingest
sealant, consume as much
water as possible, and then
immediately consult a doctor.
●If sealant gets in eyes or
adheres to skin, immediately
wash it off with water. If discom-
fort persists, consult a doctor.
Taking out the emergency
tire puncture repair kit
Emergency repair method