2018 CHEVROLET VOLT tire size

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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280 Vehicle Care
further adjustment is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the
inflation pressure is high, press
on the metal stem in the center
of the tire valve to release air.
Recheck the tire pressure with
the tire gauge.
Put the valve caps back on the
valve stems to keep out dirt and
moisture and prevent leaks. Use
only valve caps designed for the
vehicle by GM. TPMS sensors
could be damaged and would
not be covered by the vehicle
warranty.
Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitorthe air pressure in your tires and
transmit tire pressure readings to a
receiver located in the vehicle.
Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label. (If your vehicle has
tires of a different size than the size
indicated on the vehicle placard or
tire inflation pressure label, you
should determine the proper tire
inflation pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a
tire pressure monitoring system
(TPMS) that illuminates a low tire
pressure telltale when one or more
of your tires is significantly
under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them
to the proper pressure. Driving on a
significantly under-inflated tire
causes the tire to overheat and canlead to tire failure. Under-inflation
also reduces fuel efficiency and tire
tread life, and may affect the
vehicle's handling and stopping
ability.
Please note that the TPMS is not a
substitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correct tire
pressure, even if under-inflation has
not reached the level to trigger
illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been
equipped with a TPMS malfunction
indicator to indicate when the
system is not operating properly.
The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated.
This sequence will continue upon
subsequent vehicle start-ups as
long as the malfunction exists.
When the malfunction indicator is
illuminated, the system may not be
able to detect or signal low tire

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 281
pressure as intended. TPMS
malfunctions may occur for a variety
of reasons, including the installation
of replacement or alternate tires or
wheels on the vehicle that prevent
the TPMS from functioning properly.
Always check the TPMS malfunction
telltale after replacing one or more
tires or wheels on your vehicle to
ensure that the replacement or
alternate tires and wheels allow the
TPMS to continue to function
properly.
SeeTire Pressure Monitor
Operation 0281.
See Radio Frequency Statement
0 351.
Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The TPMS is designed to warn the
driver when a low tire pressure
condition exists. TPMS sensors are
mounted onto each tire and wheel
assembly, excluding the spare tire
and wheel assembly. The TPMS sensors monitor the air pressure in
the tires and transmit the tire
pressure readings to a receiver
located in the vehicle.
When a low tire pressure condition
is detected, the TPMS illuminates
the low tire pressure warning light
located on the instrument cluster.
If the warning light comes on, stop
as soon as possible and inflate the
tires to the recommended pressure
shown on the Tire and Loading
Information label. See
Vehicle Load
Limits 0167.
A message to check the pressure in
a specific tire displays in the Driver
Information Center (DIC). The low
tire pressure warning light and the
DIC warning message come on at
each ignition cycle until the tires are
inflated to the correct inflation
pressure. Using the DIC, tire pressure levels can be viewed. For
additional information and details
about the DIC operation and
displays see
Driver Information
Center (DIC) 0133.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
could be an early indicator that the
air pressure is getting low and
needs to be inflated to the proper
pressure.
A Tire and Loading Information
label, attached to your vehicle,
shows the size of the original
equipment tires and the correct
inflation pressure for the tires when
they are cold. See Vehicle Load
Limits 0167, for an example of the
Tire and Loading Information label
and its location. Also see Tire
Pressure 0279.
The TPMS can warn about a low
tire pressure condition but it does
not replace normal tire
maintenance. See Tire Inspection
0 284, Tire Rotation 0284 andTires
0 271.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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284 Vehicle Care
identification code has been
matched to the driver side rear
tire, and the TPMS sensor
matching process is no longer
active. The TIRE LEARNING
ACTIVE message on the DIC
display screen goes off.
11. Turn the vehicle off.
12. Set all four tires to the recommended air pressure
level as indicated on the Tire
and Loading Information label.
Tire Inspection
We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected
for signs of wear or damage at
least once a month.
Replace the tire if:
.The indicators at three or
more places around the tire
can be seen.
.There is cord or fabric
showing through the tire's
rubber.
.The tread or sidewall is
cracked, cut, or snagged
deep enough to show cord or
fabric.
.The tire has a bump, bulge,
or split.
.The tire has a puncture, cut,
or other damage that cannot
be repaired well because of
the size or location of the
damage.
Tire Rotation
Tires should be rotated every
12 000 km (7,500 mi). See
Maintenance Schedule 0327.
Tires are rotated to achieve a
uniform wear for all tires. The
first rotation is the most
important.
Anytime unusual wear is
noticed, rotate the tires as soon
as possible, check for proper tire
inflation pressure, and check for
damaged tires or wheels. If the unusual wear continues after the
rotation, check the wheel
alignment.
See
When It Is Time for New
Tires 0285 andWheel
Replacement 0289.
Use this rotation pattern when
rotating the tires.
If the vehicle has a compact
spare tire, do not include it in the
tire rotation.
Adjust the front and rear tires to
the recommended inflation
pressure on the Tire and

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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286 Vehicle Care
Vehicle Storage
Tires age when stored normally
mounted on a parked vehicle. Park
a vehicle that will be stored for at
least a month in a cool, dry, clean
area away from direct sunlight to
slow aging. This area should be free
of grease, gasoline, or other
substances that can deteriorate
rubber.
Parking for an extended period can
cause flat spots on the tires that
may result in vibrations while
driving. When storing a vehicle for
at least a month, remove the tires or
raise the vehicle to reduce the
weight from the tires.
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec)
system rating. When
replacement tires are needed,GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC spec number
will be followed by MS, for mud
and snow. See
Tire Sidewall
Labeling 0273.
GM recommends replacing worn
tires in complete sets of four.
Uniform tread depth on all tires
will help to maintain the
performance of the vehicle.
Braking and handling
performance may be adversely affected if all the tires are not
replaced at the same time.
If proper rotation and
maintenance have been done,
all four tires should wear out at
about the same time. See
Tire
Rotation 0284. However, if it is
necessary to replace only one
axle set of worn tires, place the
new tires on the rear axle.
Winter tires with the same speed
rating as the original equipment
tires may not be available for H,
V, W, Y, and ZR speed rated
tires. Never exceed the winter
tires’ maximum speed capability
when using winter tires with a
lower speed rating.{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
(Continued)

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 287
Warning (Continued)
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the
correct size, brand, and type
of tire on all wheels.
{Warning
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
(Continued)
Warning (Continued)
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size,
load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See Tire Pressure Monitor
System 0280.
The Tire and Loading
Information Label indicates the
original equipment tires on the
vehicle. See Vehicle Load Limits
0 167.Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
(Continued)

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Tire Chains
{Warning
Do not use tire chains. There is
not enough clearance. Tire chains
used on a vehicle without the
proper amount of clearance can
cause damage to the brakes,
suspension, or other vehicle
parts. The area damaged by the
tire chains could cause loss of
control and a crash.
Use another type of traction
device only if its manufacturer
recommends it for the vehicle's
tire size combination and road
conditions. Follow that
manufacturer's instructions. To
avoid vehicle damage, drive slow
and readjust or remove the
traction device if it contacts the
vehicle. Do not spin the wheels.
If traction devices are used, install
them on the front tires.
If a Tire Goes Flat
It is unusual for a tire to blow out
while driving, especially if the tires
are maintained properly. SeeTires
0 271. If air goes out of a tire, it is
much more likely to leak out slowly.
But if there is ever a blowout, here
are a few tips about what to expect
and what to do:
If a front tire fails, the flat tire
creates a drag that pulls the vehicle
toward that side. Take your foot off
the accelerator pedal and grip the
steering wheel firmly. Steer to
maintain lane position, and then
gently brake to a stop, well off the
road, if possible.
A rear blowout, particularly on a
curve, acts much like a skid and
may require the same correction as
used in a skid. Stop pressing the
accelerator pedal and steer to
straighten the vehicle. It may be
very bumpy and noisy. Gently brake
to a stop, well off the road,
if possible.{Warning
Driving on a flat tire will cause
permanent damage to the tire.
Re-inflating a tire after it has been
driven on while severely
underinflated or flat may cause a
blowout and a serious crash.
Never attempt to re-inflate a tire
that has been driven on while
severely underinflated or flat.
Have your dealer or an authorized
tire service center repair or
replace the flat tire as soon as
possible.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the
appropriate safety equipment and
training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
(Continued)

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
304 Vehicle Care
15. Tighten the wheel nuts firmly ina crisscross sequence, as
shown.
16. Lower the jack all the way and remove the jack from under the
vehicle.
17. Tighten the wheel nuts firmly with the wheel wrench.
Storing a Flat or Spare Tire
and Tools
{Warning
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.
1. Lift the load floor and place the jack and wrench bag in their
original storage location.
Secure them with the retainer
straps and attach the hook to
the jack.
2. Close the load floor.
3. Place the flat tire over the bolt (1) and through one of the
bolt holes with the valve stem
facing down.
4. Route the retainer strap (4)through the wheel, as shown.
5. Attach the retainer strap (4) to the right forward most
D-ring (3).
6. Tighten the retainer strap (4).
7. Turn the retainer nut (2) clockwise to secure the tire.
The compact spare is for temporary
use only. Replace the compact
spare tire with a full-size road tire as
soon as you can.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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376 Index
System (cont'd)Infotainment . . . . . . . . . . . . . 152, 354
System Operation Electric Vehicle . . . . . . . . . . . . . . . 176
Systems Driver Assistance . . . . . . . . . . . . . 200
T
Taillamps . . . . . . . . . . . . . . . . . . . . . . . 259
Text Telephone (TTY) Users . . . . 344
Theft-Deterrent Systems . . . . . . . . . 47Immobilizer . . . . . . . . . . . . . . . . . . . . . 47
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271 All-Season . . . . . . . . . . . . . . . . . . . . 272
Buying New Tires . . . . . . . . . . . . . 286
Chains . . . . . . . . . . . . . . . . . . . . . . . . 291
Changing . . . . . . . . . . . . . . . . . . . . . 299
Compact Spare . . . . . . . . . . . . . . . 305
Designations . . . . . . . . . . . . . . . . . 275
Different Size . . . . . . . . . . . . . . . . . 287
If a Tire Goes Flat . . . . . . . . . . . . 291
Inspection . . . . . . . . . . . . . . . . . . . . 284
Low Profile . . . . . . . . . . . . . . . . . . . 273
Pressure . . . . . . . . . . . . . . . . . . . . . . 279
Pressure Light . . . . . . . . . . . . . . . . 120
Pressure Monitor Operation . . 281
Pressure Monitor System . . . . . 280 Tires (cont'd)
Rotation . . . . . . . . . . . . . . . . . . . . . . 284
Sealant and
Compressor Kit . . . . . . . . . . . . . 292
Sealant and Compressor Kit, Storing . . . . . . . . . . . . . . . . . . 299
Sidewall Labeling . . . . . . . . . . . . . 273
Terminology and Definitions . . 276
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 288
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 289
Wheel Replacement . . . . . . . . . . 289
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 285
Winter . . . . . . . . . . . . . . . . . . . . . . . . 272
Towing General Information . . . . . . . . . . 232
Recreational Vehicle . . . . . . . . . . 313
Vehicle . . . . . . . . . . . . . . . . . . . . . . . .311
Traction Control System (TCS)/StabiliTrak Light . . . . . . . . . . . . . .119
Off Light . . . . . . . . . . . . . . . . . . . . . . .119
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 189
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 347 Trip Odometer . . . . . . . . . . . . . . . . . . 110
Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . . . 149
U
Uniform Tire Quality Grading . . . 288
Using This Manual . . . . . . . . . . . . . . . . 2
Utility Interruption ofCharging . . . . . . . . . . . . . . . . . . . . . . 226
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . 46
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 162
Identification Number (VIN) . . . 338
Load Limits . . . . . . . . . . . . . . . . . . . 167
Messages . . . . . . . . . . . . . . . . . . . . 136
Personalization . . . . . . . . . . . . . . . 137
Security . . . . . . . . . . . . . . . . . . . . . . . . 46
Speed Messages . . . . . . . . . . . . . 137
Starting and Stopping . . . . . . . . . 172
Towing . . . . . . . . . . . . . . . . . . . . . . . . .311
Vehicle Ahead Indicator . . . . . . . . 119
Vehicle Care Storing the Tire Sealantand Compressor Kit . . . . . . . . . 299