2021 CHEVROLET CORVETTE C8 tire size

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Vehicle Care 269
High Speed Operation Inflation Pressures
Tire Size Cold Inflation Pressure kPa (psi)
245/35ZR19 260 kPa (38 psi)
305/30ZR20 260 kPa (38 psi)
Return the tires to the recommended cold
tire inflation pressure when high-speed
driving has ended. See Vehicle Load Limits
0 188 and
Tire Pressure 0267.
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS)
uses radio and sensor technology to check
tire pressure levels. The TPMS sensors
monitor the 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 can lead 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-inflationhas 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 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

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270 Vehicle Care
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 0270.
See Radio Frequency Statement 0316.
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
0 188.
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. If the vehicle has DIC
buttons, tire pressure levels can be viewed.
For additional information and details about
the DIC operation and displays, see Driver
Information Center (DIC) 092.
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 shows
the size of the original equipment tires and
the correct inflation pressure for the tires when they are cold. See
Vehicle Load Limits
0 188, for an example of the Tire and
Loading Information label and its location.
Also see Tire Pressure 0267.
The TPMS can warn about a low tire
pressure condition but it does not replace
normal tire maintenance. See Tire Inspection
0 272, Tire Rotation 0272 and
Tires 0261.
Caution
Tire sealant materials are not all the
same. A non-approved tire sealant could
damage the TPMS sensors. TPMS sensor
damage caused by using an incorrect tire
sealant is not covered by the vehicle
warranty. Always use only the GM
approved tire sealant available through
your dealer or included in the vehicle.
TPMS Malfunction Light and Message
The TPMS will not function properly if one
or more of the TPMS sensors are missing or
inoperable. When the system detects a
malfunction, the low tire pressure warning
light flashes for about one minute and then
stays on for the remainder of the ignition
cycle. A DIC warning message also displays.

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If the turn signal lamp does not flash within
15 seconds after starting to inflate the tire,
the tire fill alert has not been activated or is
not working.
If the hazard warning flashers are on, the
tire fill alert visual feedback will not work
properly.
The TPMS will not activate the tire fill alert
properly under the following conditions:
.There is interference from an external
device or transmitter.
.The air pressure from the inflation device
is not sufficient to inflate the tire.
.There is a malfunction in the TPMS.
.There is a malfunction in the horn or turn
signal lamps.
.The identification code of the TPMS
sensor is not registered to the system.
.The battery of the TPMS sensor is low.
If the tire fill alert does not operate due to
TPMS interference, move the vehicle about
1 m (3 ft) back or forward and try again.
If the tire fill alert feature is not working,
use a tire pressure gauge.
TPMS Sensor Matching Process —Auto
Learn Function
Each TPMS sensor has a unique
identification code. The identification code
needs to be matched to a new tire/wheel
position after rotating the tires or replacing
one or more of the TPMS sensors. When a
tire is installed, the vehicle must be
stationary for about 20 minutes before the
system recalculates. The following relearn
process takes up to 10 minutes, driving at a
minimum speed of 20 km/h (12 mph).
A dash (-) or pressure value will display in
the DIC. See Driver Information Center (DIC)
0 92. A warning message displays in the DIC
if a problem occurs during the relearn
process.
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
The tires should be rotated every
12 000 km (7,500 mi). See Maintenance
Schedule 0293.
Tires are rotated to achieve 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.

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Vehicle Care 273
SeeWhen It Is Time for New Tires 0273
and
Wheel Replacement 0277.
Different tire sizes should not be
rotated front to rear.
Use this rotation pattern if the vehicle
has different size tires on the front
and rear.
Adjust the front and rear tires to the
recommended inflation pressure on the
Tire and Loading Information label after
the tires have been rotated. See Tire
Pressure 0267 and
Vehicle Load Limits 0188. Reset the Tire Pressure Monitor System.
See
Tire Pressure Monitor Operation
0 270.
Check that all wheel nuts are properly
tightened. See “Wheel Nut Torque”
under Capacities and Specifications
0 305.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
cause wheel nuts to become loose
over time. The wheel could come off
and cause a crash. When changing a
wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle. In an emergency, a cloth
or paper towel can be used; however,
use a scraper or wire brush later to
remove all rust or dirt.
Lightly coat the inner diameter of the
wheel hub opening with wheel bearing
grease after a wheel change or tire
rotation to prevent corrosion or rust
buildup.
{Warning
Do not apply grease to the wheel
mounting surface, wheel conical
seats, or the wheel nuts or bolts.
Grease applied to these areas could
cause a wheel to become loose or
come off, resulting in a crash.
When It Is Time for New Tires
Factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road
conditions affect the wear rate of the tires.
Treadwear indicators are one way to tell
when it is time for new tires. Treadwear
indicators appear when the tires have only

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274 Vehicle Care
1.6 mm (1/16 in) or less of tread remaining.
SeeTire Inspection 0272 and
Tire Rotation 0272 for additional
information.
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) molded into one side of the
tire sidewall. The last four digits of the TIN
indicate the tire manufactured date. The
first two digits represent the week and the
last two digits, the year. For example, the
third week of the year 2020 would have a
4-digit DOT date of 0320. Week 01 is the
first full week (Sunday through Saturday) of
each year.
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 0263 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. However, if it is
necessary to replace only one axle set
of worn tires, place the new tires on
the rear axle. See Tire Rotation0272.
{Warning
Tires could explode during improper
service. Attempting to mount or
dismount a tire could cause injury or
(Continued)

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Vehicle Care 275
Warning (Continued)
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, tread patterns,
or types may cause loss of vehicle
control, 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
suddenly and cause a crash. Use only
radial-ply tires with the wheels on
the vehicle. 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.
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.
The Tire and Loading Information label
indicates the original equipment tires
on the vehicle. See Vehicle Load Limits
0 188.
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, or electronic stability control, 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 developed
for the vehicle, and have them properly
installed by a GM certified technician.
See Buying New Tires 0274 and
Accessories and Modifications 0231.
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.

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278 Vehicle Care
Warning (Continued)
It could fail suddenly and cause a crash.
When replacing wheels, use a new GM
original equipment wheel.
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 slowly 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 rear
tires.
If a Tire Goes Flat
It is unusual for a tire to blow out while
driving, especially if the tires are maintained
properly. If air goes out of a tire, it is much
more likely to leak out slowly. SeeTires
0 261 for additional information. But if there
ever is 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.
The vehicle has no spare tire, no tire
changing equipment, and no place to store
a tire.
If the vehicle has run-flat tires, there is no
need to stop on the side of the road to
change a flat tire. See Run-Flat Tires0262.{Warning
Special tools and procedures are required
to service a run-flat tire. If these special
tools and procedures are not used, injury
or vehicle damage may occur. Always be
sure the proper tools and procedures, as
described in the service manual, are used.
Jump Starting
Jump Starting - North America
For more information about the vehicle
battery, see Battery - North America 0251.
If the battery has run down, use another
vehicle and some jumper cables to start the
vehicle. Be sure to use the following steps
to do it safely.
{Warning
WARNING: Battery posts, terminals, and
related accessories contain lead and lead
compounds, chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
Batteries also contain other chemicals
known to the State of California to cause (Continued)

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336 Index
Servicing System . . . . . . . . . . . . . . . . . . . . . . . . 136
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . 60
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
ShiftingInto Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . 224
Signals, Turn and Lane-Change . . . . . . . . . . . 107
Software Updates . . . . . . . . . . . . . . . . . . . . . . . . . 116
Special Application Services . . . . . . . . . . . . . . 298
Specifications and Capacities . . . . . . . . . . . . . 305
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Start Vehicle, Remote . . . . . . . . . . . . . . . . . . . . . . 12
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . 193
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Heated Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Wheel Adjustment . . . . . . . . . . . . . . . . . . . . . . 74
Wheel Controls . . . . . . . . . . . . . . . . . . . . . . . . . 74
Steering Wheel Controls . . . . . . . . . . . . . . . . . . 113
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Storage Areas Center Console . . . . . . . . . . . . . . . . . . . . . . . . . 72
Convenience Net . . . . . . . . . . . . . . . . . . . . . . . . 72
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Storage Compartments . . . . . . . . . . . . . . . . . . . 70 Struts
Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
System Engine Air Filter Life . . . . . . . . . . . . . . . . . . . 242
Front Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Global Positioning . . . . . . . . . . . . . . . . . . . . . 135
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Systems Driver Assistance . . . . . . . . . . . . . . . . . . . . . . 220
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Teen Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Text Telephone (TTY) Users . . . . . . . . . . . . . . 310
Theft-Deterrent Systems . . . . . . . . . . . . . . . . . . 24Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261 All-Season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . 274
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . 264 Tires (cont'd)
Different Size . . . . . . . . . . . . . . . . . . . . . . . . . . 275
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 278
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Lifting the Vehicle . . . . . . . . . . . . . . . . . . . . . 232
Low Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 267, 268
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Pressure Monitor Operation . . . . . . . . . . . 270
Pressure Monitor System . . . . . . . . . . . . . . 269
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Run-Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Sidewall Labeling . . . . . . . . . . . . . . . . . . . . . . 263
Terminology and Definitions . . . . . . . . . . . 265
Uniform Tire Quality Grading . . . . . . . . . . 275
Wheel Alignment and Tire Balance . . . . 277
Wheel Replacement . . . . . . . . . . . . . . . . . . . . 277
When It Is Time for New Tires . . . . . . . . . 273
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Towing General Information . . . . . . . . . . . . . . . . . . . 228
Recreational Vehicle . . . . . . . . . . . . . . . . . . . 283
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Track Events and Competitive Driving . . . . 179
Traction Limited-Slip Differential . . . . . . . . . . . . . . . . . 217
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89