tire size CHEVROLET VOLT 2020 User Guide

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13556250) - 2020 - CRC - 2/11/20
Vehicle Care 269
A message requesting
acceptance of the process may
display.
The horn sounds twice to
signal the receiver is in relearn
mode and the TIRE
LEARNING ACTIVE message
displays on the DIC screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve
stem. Then press the button to
activate the TPMS sensor.
A horn chirp confirms that the
sensor identification code has
been matched to this tire and
wheel position.
8. Proceed to the passenger side front tire, and repeat the
procedure in Step 7.
9. Proceed to the passenger side rear tire, and repeat the
procedure in Step 7.
10. Proceed to the driver side rear tire, and repeat the procedure
in Step 7. The horn sounds two
times to indicate the sensor 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matching process is no longer
active.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 0301.
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

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13556250) - 2020 - CRC - 2/11/20
Vehicle Care 271
Treadwear indicators are one way to
tell when it is time for new tires.
Treadwear indicators appear when
the tires have only 1.6 mm (1/16 in)
or less of tread remaining. SeeTire
Inspection 0269 and
Tire Rotation 0269.
The rubber in tires ages over time.
This also applies to the spare tire,
if the vehicle has one, even if it is
never used. Multiple factors
including temperatures, loading
conditions, and inflation pressure
maintenance affect how fast aging
takes place. GM recommends that
tires, including the spare if
equipped, be replaced after six years, regardless of tread wear. To
identify the age of a tire, use the tire
manufacture date which is the last
four digits of the DOT Tire
Identification Number (TIN) which is
molded into one side of the tire
sidewall. The first two digits
represent the week (01–52) and the
last two digits, the year. For
example, the third week of the year
2010 would have a four-digit DOT
date of 0310.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

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13556250) - 2020 - CRC - 2/11/20
272 Vehicle Care
and snow. SeeTire Sidewall
Labeling 0259, for additional
information.
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 0269 for information
on proper tire rotation. 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, and ZR speed rated tires.
Never exceed the winter tire's 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.
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes
(other than those originally
installed on the vehicle), brands,
or types may cause loss of
control of the vehicle, resulting in
a crash or other vehicle damage.
Use the same size, load range,
and type of tires as the original
tires.
{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
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
Operation 0265.

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13556250) - 2020 - CRC - 2/11/20
Vehicle Care 273
The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. SeeVehicle Load Limits
0 178.
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
(Continued)
Warning (Continued)
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
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0271 and
Accessories and Modifications
0 234.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires,
compact spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.
While the tires available on
General Motors passenger cars
and light trucks may vary with
respect to these grades, they
must also conform to federal
safety requirements and
additional General Motors Tire
Performance Criteria (TPC)
standards.
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13556250) - 2020 - CRC - 2/11/20
276 Vehicle Care
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
This vehicle has self-sealing tires.
SeeSelf-Sealing Tires 0258. Tread
punctures typically will not cause
tires to lose air. However, if the
vehicle does get a flat tire, there is
no spare tire, tire changing
equipment, or place to store a tire.
Contact Roadside Assistance
for help.
It is unusual for a tire to blow out,
especially if the tires are maintained
properly. If air goes out of a tire, it is
much more likely to leak out slowly.
See Tires 0257. 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 will
create 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
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
anything else, you or others could
be badly injured or killed if the
vehicle slips off the jack. If a jack
is provided with the vehicle, only
use it for changing a flat tire.
If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place, well off the road,
if possible. 1. Turn on the hazard warning flashers. See Hazard Warning
Flashers 0131.

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13556250) - 2020 - CRC - 2/11/20
344 Index
Tires (cont'd)All-Season . . . . . . . . . . . . . . . . . . . . 257
Buying New Tires . . . . . . . . . . . . . 271
Chains . . . . . . . . . . . . . . . . . . . . . . . . 276
Designations . . . . . . . . . . . . . . . . . 260
Different Size . . . . . . . . . . . . . . . . . 273
If a Tire Goes Flat . . . . . . . . . . . . 276
Inspection . . . . . . . . . . . . . . . . . . . . 269
Pressure . . . . . . . . . . . . . . . . . . . . . . 263
Pressure Light . . . . . . . . . . . . . . . . 105
Pressure Monitor Operation . . 265
Pressure Monitor System . . . . . 264
Rotation . . . . . . . . . . . . . . . . . . . . . . 269
Sealant and
Compressor Kit . . . . . . . . . . . . . 277
Sealant and Compressor
Kit, Storing . . . . . . . . . . . . . . . . . . 283
Self-Sealing . . . . . . . . . . . . . . . . . . 258
Sidewall Labeling . . . . . . . . . . . . . 259
Terminology and Definitions . . 260
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 273
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 275
Wheel Replacement . . . . . . . . . . 275
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 270
Winter . . . . . . . . . . . . . . . . . . . . . . . . 258 Towing
General Information . . . . . . . . . . 230
Recreational Vehicle . . . . . . . . . . 289
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 287
Traction Control System(TCS)/StabiliTrak Light . . . . . . 105
Off Light . . . . . . . . . . . . . . . . . . . . . . 104
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 194
Trademarks and License
Agreements . . . . . . . . . . . . . . . . . . . 161
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 318
Trip Odometer . . . . . . . . . . . . . . . . . . . 97
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 132
Turn Signal Bulb Replacement . . . . . . . . . . . . 248
U
Underhood CompartmentFuse Block . . . . . . . . . . . . . . . . . . . . 251
Underhood Compartment Overview . . . . . . . . . . . . . . . . . . . . . . 237
Uniform Tire Quality Grading . . . 273
Updates
Software . . . . . . . . . . . . . . . . . . . . . . 139 USB Port . . . . . . . . . . . . . . . . . . . . . . . 143
Using This Manual . . . . . . . . . . . . . . . . 2
Utility Interruption of
Charging . . . . . . . . . . . . . . . . . . . . . . 228
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . 22
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 173
Identification Number (VIN) . . . 310
Load Limits . . . . . . . . . . . . . . . . . . . 178
Messages . . . . . . . . . . . . . . . . . . . . 120
Personalization . . . . . . . . . . . . . . . 121
Security . . . . . . . . . . . . . . . . . . . . . . . . 22
Service Soon Light . . . . . . . . . . . 102
Speed Messages . . . . . . . . . . . . . 121
Starting and Stopping . . . . . . . . . 184
Towing . . . . . . . . . . . . . . . . . . . . . . . . 287
Vehicle Ahead Indicator . . . . . . . . 104
Vehicle Care Storing the Tire Sealantand Compressor Kit . . . . . . . . . 283
Tire Pressure . . . . . . . . . . . . . . . . . 263
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 324
Vehicle Ready Light . . . . . . . . . . . . 106
Ventilation, Air . . . . . . . . . . . . . . . . . . 167

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13556250) - 2020 - CRC - 2/11/20
Index 345
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Voltage Devices and Wiring . . . . 249
W
WarningBrake System Light . . . . . . . . . . . 102
Caution and Danger . . . . . . . . . . . . . 2
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . 94
Warnings Hazard Flashers . . . . . . . . . . . . . . 131
Washer Fluid . . . . . . . . . . . . . . . . . . . 239
Wheels
Alignment and Tire Balance . . 275
Different Size . . . . . . . . . . . . . . . . . 273
Replacement . . . . . . . . . . . . . . . . . 275
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 270
When to Charge . . . . . . . . . . . . . . . . 213
Where to Put the Restraint . . . . . . 65
Windows . . . . . . . . . . . . . . . . . . . . . . . . 28 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Windshield Replacement . . . . . . . . . . . . . . . . . 246
Wiper/Washer . . . . . . . . . . . . . . . . . . 87
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . 177
Winter Tires . . . . . . . . . . . . . . . . . . . . 258 Wiper Blade Replacement . . . . . . 244
Wipers
Rear Washer . . . . . . . . . . . . . . . . . . . 88
Wireless Charging . . . . . . . . . . . . . . . 91
Wiring, High Voltage Devices . . . 249