2019 TOYOTA GT86 Owners Manual (in English)

345
4-3. Do-it-yourself maintenance
4
Maintenance and care
Tires
Replace or rotate tires in accordance with maintenance sched-
ules and treadwear.
■Checking tires
Check if the treadwear indicators are showing on the tires. Als o
check the tires for uneven wear, such as excessive wear on one
side of the tread.
Check the spare tire condition and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators is shown by a “TWI” or “ ” mark,
etc., molded into the sidewall of each tire.
Replace the tires if the treadwear indicators are showing on a tire.
■Tire rotation
Rotate the tires in the order
shown.
To equalize tire wear and
extend tire life, Toyota recom-
mends that tire rotation is
carried out at the same inter-
val as tire inspection.
Front

346 4-3. Do-it-yourself maintenance
Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves an d
transmitters must a lso be installed.
When new tire pressure warning valves and transmitters are
installed, new tire pressure warning valve and transmitter ID c odes
must be registered in the tire pressure warning computer and ti re
pressure warning system must be i nitialized. Have tire pressure
warning valve and transmitter ID codes registered by your Toyot a
dealer. ( P. 346)
Registering ID codes
The tire pressure warning valve and transmitter is equipped wit h a
unique ID code. When replacing a tire pressure warning valve an d
transmitter, it is necessary to register the ID code. Have the ID code
registered by your Toyota dealer.
■ The tire pressure warning system
Your Toyota is equipped with a tire pressure warning system tha t
uses tire pressure warning valves and transmitters to detect lo w
tire inflation pressure befor e serious problems arise.
(  P. 3 9 9 )

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4-3. Do-it-yourself maintenance
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Maintenance and care
■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 c
uts, splits, cracks deep enough to
expose the fabric or bulges indicating internal damage
●A tire goes flat repeatedly or cannot be properly repaired due to the
size or location of a cut or other damage
If you are not sure, consul t with your Toyota dealer.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitt er is not
registered, the tire pressure w arning system will not work prop erly. After
driving for about 20 minutes, t he tire pressure warning light c omes on
after blinking for 1 minute to indicate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified techni cian even
if they have seldom or never b een used or damage is not obvious.
■If the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
■Low profile tires
Generally, low profile tires will wear more rapidly and tire gr ip perfor-
mance will be reduced on snowy and /or icy roads when compared to
standard tires. Be sure to use snow tires or tire chains on sno wy and/or
icy roads and drive carefully at a speed appropriate for road a nd weather
conditions.

348 4-3. Do-it-yourself maintenance
■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, whichever is greater.
■Tire types
1 Summer tires
Summer tires are high-speed performance tires best suited to hi ghway
driving under dry conditions. Since summer tires do not have th e same
traction performance as snow tires, summer tires are inadequate for
driving on snow-covered or icy roads. For driving on snow-cover ed
roads or icy roads, the use of snow tires is recommended. When
installing snow tires, be sure to replace all four tires.
2 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 f or 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 perfor mance
compared with summer tires in highway driving.
3Snow 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 th e 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 tir es without
first checking local regulations for possible restriction. Snow tires
should be installed on all wheels. ( P. 261)
For the GAWR, see the Certification
Label. For the maximum load of the
tire, see the load limit at maximum cold
tire inflation pressure mentioned on the
sidewall of the tire. ( P. 4 7 4 )

349
4-3. Do-it-yourself maintenance
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Maintenance and care
■Initializing the tire p
ressure warning system
Initialize the system with the ti re inflation pressure adjusted to the speci-
fied level.
■Routine tire infla tion 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 pressure warning system certification (vehicles without a
smart key system)
MODEL/FCC IDs:
Transmitter: PAXPMVC010
Receiver: HYQ23AAC
For vehicles sold in the U.S.A.
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party re sponsi-
ble for compliance could void the user's authority to operate t he equip-
ment.
For vehicles sold in Canada
NOTE:
This device complies with Industr y Canada’s licence-exempt RSSs.
Operation is subject to the following two conditions: (1) This device may
not cause interference; and (2) This device must accept any int erfer-
ence, including interference that may cause undesired operation of the
device.
NOTE:
Le présent appareil est conforme aux CNR d’Industrie Canada applica-
bles aux appareils radio exempts de licence. L’exploitation est autorisée
aux deux conditions suivantes: (1) l’appareil ne doit pas produ ire de
brouillage; (2) l’utilisateur de l’appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d’en compro-
mettre le fonctionnement.

350 4-3. Do-it-yourself maintenance
■Tire pressure warning system certification (vehicles with a smart
key system)
MODEL/FCC IDs:
Transmitter: PAXPMVC010
Receiver: HYQ23AAE
For vehicles sold in the U.S.A.
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party re sponsi-
ble for compliance could void the user's authority to operate t he equip-
ment.
For vehicles sold in Canada
NOTE:
This device complies with Industry Canada’s licence-exempt RSSs .
Operation is subject to the following two conditions: (1) This device may
not cause interference; and (2) This device must accept any int erfer-
ence, including interference that may cause undesired operation of the
device.
NOTE:
Le présent appareil est conforme aux CNR d’Industrie Canada app lica-
bles aux appareils radio exempts de licence. L’exploitation est autorisée
aux deux conditions suivantes: (1) l’appareil ne doit pas produ ire de
brouillage; (2) l’utilisateur de l’appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d’en compro-
mettre le fonctionnement.

351
4-3. Do-it-yourself maintenance
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Maintenance and care
WARNING
■Tire pressure warning system operation
The tire pressure warning system may not provide warning immedi
ately
if a tire bursts or if sudden air leakage occurs.
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train, as well as
dangerous handling characteristics, which may lead to an accide nt
resulting in death or serious injury.
●Make sure to install 4 tires that are of the specified size, and that all 4
tires are the same size, same ma ker, same brand and tread pattern.
●Do not use tire sizes other than those recommended by Toyota.
●Only use radial tires.
●Do not mix summer, all season and snow tires.
●Do not use tires that have be en used on another vehicle.
Do not use tires if you do not kno w how they were used previously.
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning val ves,
transmitters and tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning
valves and transmitters, contact your Toyota dealer as the tire pres-
sure warning valves and transmitters may be damaged if not hand led
correctly.
●Make sure to install the tire valve caps. If the tire valve cap s are not
installed, water could enter the tire pressure warning valves a nd the
tire pressure warning valves could be bound.
●When replacing tire valve caps, do not use tire valve caps othe r than
those specified. The c ap may become stuck.

352 4-3. Do-it-yourself maintenance
NOTICE
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or pot
holes.
These conditions may cause losses in tire inflation pressure, r educing
the cushioning ability of the tire s. 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 and wheels
Low profile tires may cause greater damage than usual to the ti re wheel
when receiving impact from the road surface. Therefore pay attention to
the following:
●Be sure to use proper tire inflation pressure. If tires are und er-inflated,
they may be damaged more severely.
●Avoid pot holes, uneven pavement, curbs and other road hazards.
Failure to do so may lead to severe tire and wheel damage.
■If tire inflation pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.