tire type TOYOTA MIRAI 2018 Owners Manual (in English)

15Pictorial index
MIRAI_OM_USA_OM62025UWindshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 195
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 252
To prevent freezing (windshield wiper de-icer). . . . . . . . . . . . . P. 259
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . P. 308
Fuel door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 198
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 198
Fuel type/hydrogen tanks’ fuel capacity . . . . . . . . . . . . . . . . . . P. 418
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . P. 332
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 421
Winter tires/tire chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 252
Checking/rotation/tire pressur e warning system . . . . . . . . .P. 332
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 381
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 320
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 320
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 406
Warning message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 376
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 187
Parking lights/daytime running lights . . . . . . . . . . . . . . . . . P. 187
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 185
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 187
Stop lights
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 187
Back-up lights
Shifting the shift position to R . . . . . . . . . . . . . . . . . . . . . . . . . P. 179
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 187
Light bulbs of the exterior lights for driving
(Replacing method: P. 358)

2535-6. Driving tips
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Driving
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Accelerate the vehicle slowly, keep a safe distance between you and
the vehicle ahead, and drive at a reduced speed suitable to roa d con-
ditions.
Park the vehicle and shift the shift position to P without sett ing the
parking brake. The parking brake may freeze up, preventing it f rom
being released. If the vehicle is parked without setting the pa rking
brake, make sure t o block the wheels.
Failure to do so may be dangerous because it may cause the vehi cle
to move unexpectedly, possi bly leading to an accident.
Use the correct tire chain size when mount ing the tire chains.
Chain size is regulate d 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
Regulations regarding the use of tire chains vary depending on loca-
tion and type of road. Always chec k 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 tir e chains on the rear
tires.
● Install tire chains on front tires as tightly as possible. Reti ghten chains after
driving 1/4  1/2 mile (0.5  1.0 km).
● Install tire chains following the instructions provided with th e tire chains.
When driving the vehicle
When parking the vehicle
Selecting tire chains
Regulations on the use of tire chains

2545-6. Driving tips
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WARNING
■Driving with snow tires
Observe the following precautions to reduce the risk of acciden ts.
Failure to do so may result in a loss of vehicle control and ca use death or
serious injury.
● Use tires of the specified size.
● Maintain the recommended level of air pressure.
● Do not drive in excess of 75 mph (120 km/h), regardless of the type of
snow tires being used.
● Use snow tires on all, not just some wheels.
■ Driving with tire chains
Observe the following precautions to reduce the risk of acciden ts.
Failure to do so may result in the vehicle being unable to be d riven safely,
and may cause death or serious injury.
● Do not drive in excess of the speed limit specified for the tir e chains being
used, or 30 mph (50 km/h), whichever is lower.
● Avoid driving on bumpy road surfaces or over potholes.
● Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden regenerative braking.
● Slow down sufficiently before entering a curve to ensure that v ehicle con-
trol is maintained.
● Do not use LDA (Lane Departure Alert) system.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow tires from Toyota dealer s or legiti-
mate tire retailers.
This is because the removal and attachment of snow tires affect s the opera-
tion of the tire pressure warning valves and transmitters.
■ Fitting tire chains
The tire pressure warning valves and transmitters may not funct ion correctly
when tire chains are fitted.

3357-3. Do-it-yourself maintenance
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Maintenance and care
■Tire types
●Summer tires
Summer tires are high-speed performance tires best suited to highway
driving under dry conditions. Si nce summer tires do not have th e same
traction performance as snow tires, summer tires are inadequate for
driving on snow-covered or icy ro ads. For driving on snow-covered
roads or icy roads, the use of snow tires is recommended. When install-
ing snow tires, be sure to replace all four tires.
●All season tires
All season tires are designed to provide better traction in sno w and to
be adequate for driving in most winter conditions as well as fo r use
year-round. All season tires, however, do not have adequate tra ction
performance compared with snow tires in heavy or loose snow. Al so, all
season tires fall short in acceleration and handling performanc e com-
pared with summer tires in highway driving.
●Snow tires
For driving on snow-covered roads or icy roads, we recommend us ing
snow tires. If you need snow tires, select tires of the same si ze, con-
struction and load capacity as t he originally installed tires. Since your
vehicle has radial tires as original equipment, make sure your snow
tires also have radial construct ion. Do not install studded tires without
first checking local regulations for possible restrictions. Sno w tires
should be install ed on all wheels. ( P. 252)
■If the tread on snow tires wea rs down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.

3497-3. Do-it-yourself maintenance
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Maintenance and care
Wheels
When replacing wheels, care should be taken to ensure that they are
equivalent to those removed in load capacity, diameter, rim wid th and
inset
*.
Replacement wheels are available at your Toyota dealer.
*: Conventionally referred to as “offset”.
Toyota does not recommend using the following:
● Wheels of different sizes or types
● Used wheels
● Bent wheels that hav e been straightened
● Use only Toyota wheel nuts and wrenches designed for use with
your aluminum wheels.
● When rotating, repairing or changi ng your tires, check that the
wheel nuts are still tight afte r driving 1000 miles (1600 km).
● Be careful not to damage the aluminum wheels when using tire
chains.
● Use only Toyota genuine balance we ights or equivalent and a plas-
tic or rubber hammer when balancing your wheels.
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warn ing
valves and transmitters that allow the tire pressure warning sy stem to
provide advance warning in the event of a loss in tire inflatio n pressure.
Whenever wheels are replaced, tir e pressure warning valves and trans-
mitters must be installed. ( P. 333)
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
Aluminum wheel precautions

3918-2. Steps to take in an emergency
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When trouble arises
■Emergency tire puncture repair kit
●The sealant stored in the emergency tire puncture repair kit can be used
only once to temporarily repair a single tire. If the sealant h as been used
and needs to be replaced, purchase a new bottle at your Toyota dealer.
The compressor is reusable.
●The sealant can be used when the outside temperature is from -4 0F
(-40 C) to 140 F (60 C).
●The repair kit is exclusively de signed for size and type of tires originally
installed on your vehicle. Do not use it for tires that a diffe rent size than
the original ones, or for any other purposes.
●The sealant has a limited lifespan. The expiry date is shown on the bot-
tle. The sealant should be replaced before the expiry date. Pur chase a
new bottle at your Toyota dealer for replacement.
●If the sealant gets on yo ur 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 produced.
This does not indicate a malfunction.
●Do not use to che ck or to adjust the tire pressure.

4229-1. Specifications
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Tire information
Tire size (P. 424)
DOT and Tire Identification Number (TIN) ( P. 4 2 3 )
Uniform tire quality grading
For details, see “Uniform Tire Q uality Grading” that follows.
Location of treadwear indicators ( P. 3 3 2 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the p lies in a tire.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “ RADIAL”
is a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly put into the tire.
A tube type tire has a tube insi de the tire and the tube mainta ins the air
pressure.
Load limit at maximum cold tire inflation pressure ( P. 428)
Maximum cold tire in flation pressure (P. 428)
This means the press ure to which a tire may be inflated.
Summer tires or all season tires ( P. 3 3 5 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S”
is a summer tire.
Typical tire symbols

4239-1. Specifications
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Vehicle specifications
DOT symbol*
Tire Identification Number (TIN)
Tire manufacturer’s identification mark
Tire size code
Manufacturer’s optional tire type code (3 or 4 letters)
Manufacturing week
Manufacturing year
Manufacturer’s code
*: The DOT symbol certifies that the tire conforms to applicable Federal
Motor Vehicle Safety Standards.
Typical DOT and Tire Iden tification Number (TIN)
Ty p e AType B

4299-1. Specifications
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Vehicle specifications
Production options
weight
The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty 12-volt battery, and special trim
Rim
A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a
rim by style or code
Rim widthNominal distance between rim flanges
Vehicle capacity
weight (Total load
capacity)The rated cargo and l uggage load plus 150 lb.
(68 kg) times the vehicle’s designated seating
capacity
Vehicle maximum load
on the tire
The load on an individual tire that is deter-
mined by distributing to each axle its share of
the maximum loaded vehicle weight, and
dividing by two
Vehicle normal load on
the tire
The load on an individual tire that is deter-
mined by distributing to each axle its share of
curb weight, accessory weight, and normal
occupant weight (distributed in accordance
with Table 1
* below), and dividing by two
Weather sideThe surface area of the rim not covered by the
inflated tire
Bead
The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separationA breakdown of the bond between compo-
nents in the bead
Tire related termMeaning

448What to do if... (Troubleshooting)
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●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P. 371)
●The brake system warning light is on
Is the parking brake released? ( P. 186)
Depending on the situation, other types of warning buzzer may a lso sound.
( P. 369, 376)
●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 74)
To stop the alarm, turn the power switch to ON mode or start the fuel cell sys-
tem.

●Is the electronic key left inside the vehicle?
Check the message on the multi-information display. ( P. 376)
●When a warning light turns on or a warning message or indicator is dis-
played, refer to P. 369, 376.
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 381)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 412)
A warning buzzer sounds during driving
A warning buzzer sounds w hen leaving the vehicle
An alarm is activated and the horn sounds
A warning light turns on or a warning message or indicator
is displayed
When a problem has occurred If you have a flat tire
The vehicle becomes stuck