2021 CHEVROLET CORVETTE C8 tire type

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Infotainment System 131
Map Orientation
Touch
Aon the map to access map
orientation settings. Map orientation is
3D Heading Up by default.
Available settings are:
.3D Heading Up (Default): 3D map with
the vehicle pointing up. In this mode, the
current location icon will always head up
and the map will rotate around it.
.2D Heading Up: 2D map with the vehicle
pointing up. In this mode, the current
location icon will always head up and the
map will rotate around it.
.2D North Up: 2D map with North pointing
up. In this mode, the current location icon
will shift as the vehicle turns left and
right.
Touch the icon to change the map type. The
icon and label will also update accordingly.
Depending on the zoom level of the
2D Heading Up and 3D Heading Up maps,
the system may automatically switch to the
2D North Up map.
When in AGV, the entire route can be
viewed in 2D North Up by touching the
traffic bar. The map will zoom out and
readjust to display the full route. When in 2D North Up Route View, the Recenter icon
will appear in the middle of the display.
Touch either the Recenter icon or the traffic
bar again to return to the previous view,
either 2D or 3D.
Lane Guidance
The map will display the lane information
for the upcoming maneuver if it is available.
Junction View
When a vehicle is on the highway and
approaching the exit, an image displays the
lane that the vehicle must stay in to
complete the next maneuver.
Quick-Turn View
When the vehicle is approaching a turn with
the next turn following in quick succession,
a quick-turn list appears below the primary
turn indicator. An audio prompt will
announce the quick turn.
Auto-Zoom
When approaching a maneuver, the map
will automatically zoom in to show both the
vehicle icon and the upcoming maneuver to
give a better view of the maneuver. Once
the maneuver is complete, the system will
zoom back to the previous zoom level.
Touch
Aon the map to access Settings,
then touch Map Preferences to access
Auto-Zoom. This feature can be enabled or
disabled.
Directions
Touch the menu option next to the next
turn street name to display Directions.
Directions displays the turns and directions
from the current location to the final
destination.
Editing Directions
Directions can be edited by choosing
y,
which expands the list to fill the display and
enters the Edit Mode. While in Edit Mode,
an unwanted route segment can be

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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138 Infotainment System
select. Manual interaction in the voice
recognition session is permitted. Interaction
during a voice session may be completed
entirely using voice commands while some
manual commands may expedite a task. If a
selection is made using a manual control,
the voice recognition dialog will progress in
the same way as if the selection were made
using a voice command. Once the system
completes the task, or the session is
terminated, the voice recognition dialog
stops.
An example of this type of manual
intervention is touching an entry of a
displayed number list instead of speaking
the number associated with the entry
desired.
Canceling Voice Recognition
.Touch or say“Cancel”or“Exit” to
terminate the voice recognition session
and show the display where voice
recognition was initiated.
.Presscon the steering wheel controls
to terminate the voice recognition session
and show the display where voice
recognition was initiated. Natural Language Commands
Most languages do not support natural
language commands in sentence form. For
those languages, use direct commands like
the examples shown on the display.
Helpful Hints for Speaking Commands
Voice recognition can understand commands
that are naturally stated in sentence form or
direct commands that state the application
and the task.
For best results:
.Listen for the prompt before saying a
command or reply.
.Speak the command naturally, not too
fast, not too slow.
.Use direct commands without a lot of
extra words. For example,
“Call
at work,” “Play” followed by the artist or
song name, or “Tune”followed by the
radio station number.
.Navigation destinations can be made in a
single command using keywords. A few
examples are: “I want directions to an
address,” “I need to find a place of
interest or (POI),” or“Find contact.” The system responds by requesting more
details. For other POIs, say the name of a
category like
“Restaurants,” “Shopping
Malls,” or“Hospitals.”
.Navigating to a destination outside of the
current country takes more than one
command. The first command is to tell
the system where the navigation will take
place, such as an Address, Intersection,
POI, or Contact. If Address or Intersection
is selected, the second command is to
say, “Change Country.” Once the system
responds, say the country before saying
the rest of the address and/or
intersection.
If POI is asked for, say “Change Location,”
then “Change Country.”
Direct commands might be more clearly
understood by the system. An example of a
direct command would be “Call .”
Examples of these direct commands are
displayed on most of the screens while a
voice session is active. If “Phone”or“Phone
Commands,” is spoken, the system
understands that a phone call is requested
and will respond with questions until
enough details are gathered to make a call.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Infotainment System 141
Once the number of files has exceeded
approximately 24,000, there is no support
for accessing the songs directly through
voice commands. There will still be access to
the media content by using commands for
playlists, artists, and genres.
The access commands for playlists, artists,
and genres are prohibited after the number
of this type of media exceeds 12,000.
The system will provide feedback the first
time voice recognition is initiated if it has
become apparent that any of these limits
are reached during a device initializing
process.
Voice recognition performance will degrade
to some extent based on many factors when
adding large amounts of data to recognize.
If this is the case, perhaps accessing songs
through playlists or artist name would work
better.
Voice Recognition for Navigation
“Navigation”:Begin a dialog to enter
specific destination information.
“Navigation Commands” :Begin a dialog to
enter specific destination information. “Address”
:Begin a dialog to enter a
specific destination address, which includes
the entire address consisting of the house
number, street name, city, state/province,
and country. Do not include the ZIP code.
“Place of Interest” :Begin a dialog to enter
a destination Place of Interest category or
major brand name.
The name must be precisely spoken.
Nicknames or short names for the
businesses will not likely be found. Lesser
known businesses might have to be located
by category, such as fast food, hotels,
or banks.
“Navigate to Contact” :Begin a dialog to
enter a specific destination contact name.
“Cancel Route” :End route guidance.
“Take Me Home” :Create a route to a
stored home location.
Voice Recognition for the Phone
“Call ” :Initiate a call to a
stored contact. The command may include
location if the contact has location numbers
stored. “Call At Home,” “At Work,” “On
Mobile,”
or“On Other” :Initiate a call to a
stored contact and location at home, at
work, on mobile device, or on another
phone.
“Call ” :Initiate a call
to a cell phone number of seven digits, 10
digits, or three digit emergency numbers.
“Pair Phone” :Begin the Bluetooth pairing
process. Follow the instructions on the
infotainment display.
“Redial” :Initiate a call to the last dialed
number.
“Switch Phone” :Select a different
connected cell phone for outgoing calls.
“Voice Keypad” :Begin a dialog to enter
special numbers like international numbers.
The numbers can be entered in groups of
digits with each group of digits being
repeated back by the system. If the group
of digits is not correct, the command
“Delete” will remove the last group of digits
and allow them to be re-entered. Once the
entire number has been entered, the
command “Call”will start dialing the
number.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Driving and Operating 179
The vehicle's right wheels can drop off the
edge of a road onto the shoulder while
driving. Follow these tips:1. Ease off the accelerator and then, if there is nothing in the way, steer the
vehicle so that it straddles the edge of
the pavement.
2. Turn the steering wheel about one-eighth of a turn, until the right front
tire contacts the pavement edge.
3. Turn the steering wheel to go straight down the roadway.
Loss of Control
Skidding
There are three types of skids that
correspond to the vehicle's three control
systems:
.Braking Skid —wheels are not rolling.
.Steering or Cornering Skid —too much
speed or steering in a curve causes tires
to slip and lose cornering force.
.Acceleration Skid —too much throttle
causes the driving wheels to spin. Defensive drivers avoid most skids by taking
reasonable care suited to existing conditions,
and by not overdriving those conditions. But
skids are always possible.
If the vehicle starts to slide, follow these
suggestions:
.Ease your foot off the accelerator pedal
and steer the way you want the vehicle
to go. The vehicle may straighten out. Be
ready for a second skid if it occurs.
.Slow down and adjust your driving
according to weather conditions. Stopping
distance can be longer and vehicle control
can be affected when traction is reduced
by water, snow, ice, gravel, or other
material on the road. Learn to recognize
warning clues
—such as enough water,
ice, or packed snow on the road to make
a mirrored surface —and slow down
when you have any doubt.
.Try to avoid sudden steering, acceleration,
or braking, including reducing vehicle
speed by shifting to a lower gear. Any
sudden changes could cause the tires to
slide.
Remember: Antilock brakes help avoid only
the braking skid.
Track Events and Competitive
Driving (Z51 Only)
Vehicles without Z51 package should not be
used for track events and competitive
driving.
{Danger
High-performance features are intended
for use only on closed tracks by
experienced and qualified drivers and
should not be used on public roads.
High-speed driving, aggressive cornering,
hard braking, and other high-performance
driving can be dangerous. Improper driver
inputs for the conditions may result in
loss of control of the vehicle, which could
injure or kill you or others. Always drive
safely.
Participating in track events or other
competitive driving without following the
instructions provided may affect the vehicle
warranty. See the warranty manual before
using the vehicle for racing or other
competitive driving. See Competitive Driving
Mode 0214.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Driving and Operating 185
Caution
Do not use power tools when removing
or installing the fasteners. Damage to the
threads may occur. Use hand tools only,
and do not overtighten. Hand start the
fasteners to ensure that the threads do
not bind or cross thread.
The racing and competitive driving wheel
alignment settings should be set as
described here.
To achieve the track alignment specified
settings: 1. The upper control arm to body washers on all four corners will need to be
moved from between the body and the
control arm and relocated between the
head of the bolt and the control arm.
2. Adjust the lower control arm cam bolt position to achieve the following
specifications.
Front (per corner)
.Caster: +8.0 degrees
.Camber: -3.0 degrees
.Toe (total): 0.1 degrees toe in Rear (per corner)
.Caster: 0 degrees
.Camber: -2.5 degrees
.Toe (total): 0.1 degrees toe in
.Thrust Angle: 0 degrees
After track use, reinstall washers between
the body and the control arms. Reset to
factory alignment settings. See your dealer.
Driving on Wet Roads
Rain and wet roads can reduce vehicle
traction and affect your ability to stop and
accelerate. Always drive slower in these
types of driving conditions and avoid driving
through large puddles and deep-standing or
flowing water.
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick stop
and could cause pulling to one side. You
could lose control of the vehicle.
After driving through a large puddle of
water or a car/vehicle wash, lightly apply
the brake pedal until the brakes work
normally. (Continued)
Warning (Continued)
Flowing or rushing water creates strong
forces. Driving through flowing water
could cause the vehicle to be carried
away. If this happens, you and other
vehicle occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive through
flowing water.
Caution
Driving through deep puddles or standing
water can cause water to come in
through the engine air intake and
damage the engine. If deep puddles or
standing water cannot be avoided,
proceed with caution and do not exceed
8 km/h (5 mph). Do not drive through
water that may come close to or cover
the vehicle’s underbody.
Hydroplaning
Hydroplaning is dangerous. Water can build
up under the vehicle's tires so they actually
ride on the water. This can happen if the

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
262 Vehicle Care
code molded onto the sidewall. Original
equipment all-season tires can be identified
by the last two characters of this TPC code,
which will be“MS.”
Consider installing winter tires on the
vehicle if frequent driving on snow or
ice-covered roads is expected. All-season tires
provide adequate performance for most
winter driving conditions, but they may not
offer the same level of traction or
performance as winter tires on snow or
ice-covered roads. See Winter Tires0262.
Winter Tires
This vehicle was not originally equipped
with winter tires. Winter tires are designed
for increased traction on snow and
ice-covered roads. Consider installing winter
tires on the vehicle if frequent driving on ice
or snow covered roads is expected. See your
dealer for details regarding winter tire
availability and proper tire selection. Also,
see Buying New Tires 0274.
With winter tires, there may be decreased
dry road traction, increased road noise, and
shorter tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking. If using winter tires:
.Use tires of the same brand and tread
type on all four wheel positions.
.Use only radial ply tires of the same size,
load range, and speed rating as the
original equipment tires.
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. If winter tires with a lower speed
rating are chosen, never exceed the tire's
maximum speed capability.
Run-Flat Tires
This vehicle, when new, may have had
run-flat tires. There is no spare tire, no tire
changing equipment, and no place to store a
tire in the vehicle.
{Warning
While driving with run-flat tires at a
reduced inflation pressure, avoid making
sudden stops or severe maneuvers as the
handling capabilities of the tires will be
reduced. Driving too fast could cause loss
of control and you or others could be
injured. Do not drive over 80 km/h (Continued)
Warning (Continued)
(50 mph) with the tire operating at low
pressure. Drive cautiously and check the
tire pressure as soon as possible.
Run-flat tires can be driven up to 80 km
(50 mi) at speeds less than 80 km/h
(50 mph) after a loss of inflation pressure
has occurred. There is no need to stop on
the side of the road to change the tire. The
possible driving range after a pressure loss
will vary based on the vehicle load and
driving conditions. As soon as possible,
contact the nearest authorized GM or
run-flat servicing facility for inspection and
repair or replacement.
When driving on a deflated run-flat tire,
avoid potholes and other road hazards that
could damage the tire and/or wheel beyond
repair. When a tire has been damaged, or if
driven any distance while deflated, check
with an authorized run-flat tire service
center to determine whether the tire can be
repaired or should be replaced. To maintain
the run-flat feature, all replacement tires
must be run-flat tires.
To locate the nearest GM or run-flat
servicing facility, call Customer Assistance.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 263
Low-Profile Tires
If the vehicle has 245/35ZR19 or
305/30ZR20 size tires, they are classified
as low-profile tires.Caution
Low-profile tires are more susceptible to
damage from road hazards or curb impact
than standard profile tires. Tire and/or
wheel assembly damage can occur when
coming into contact with road hazards
like potholes, or sharp edged objects,
or when sliding into a curb. The warranty
does not cover this type of damage. Keep
tires set to the correct inflation pressure
and when possible, avoid contact with
curbs, potholes, and other road hazards.
Summer Tires
High Performance Summer Tires
This vehicle may come with 245/35ZR19 and
305/30ZR20 high performance summer tires.
These tires have a special tread and
compound that are optimized for maximum
dry and wet road performance. This special
tread and compound will have decreased
performance in cold climates, and on ice and snow. It is recommended that winter tires
be installed on the vehicle if frequent
driving at temperatures below
approximately 5 °C (40 °F) or on ice or snow
covered roads is expected. See
Winter Tires
0 262.
Caution
High performance summer tires have
rubber compounds that lose flexibility
and may develop surface cracks in the
tread area at temperatures below −7 °C
(20 °F). Always store high performance
summer tires indoors and at
temperatures above −7 °C (20 °F) when
not in use. If the tires have been
subjected to −7 °C (20 °F) or less, let them
warm up in a heated space to at least
5 °C (40 °F) for 24 hours or more before
being installed or driving a vehicle on
which they are installed. Do not apply
heat or blow heated air directly on the
tires. Always inspect tires before use. See
Tire Inspection 0272.
Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The example
shows a typical passenger tire sidewall.
Passenger (P-Metric) Tire Example
(1) Tire Size:The tire size is a
combination of letters and numbers
used to define a particular tire's width,
height, aspect ratio, construction type,
and service description. See the “Tire
Size” illustration later in this section.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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264 Vehicle Care
(2) TPC Spec (Tire Performance Criteria
Specification)
:Original equipment tires
designed to GM's specific tire
performance criteria have a TPC
specification code molded onto the
sidewall. GM's TPC specifications meet
or exceed all federal safety guidelines.
(3) DOT (Department of
Transportation)
:The Department of
Transportation (DOT) code indicates that
the tire is in compliance with the U.S.
Department of Transportation Motor
Vehicle Safety Standards.
DOT Tire Date of Manufacture
: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.
(4) Tire Identification Number (TIN)
:
The letters and numbers following the
DOT code are the Tire Identification
Number (TIN). The TIN shows the manufacturer and plant code, tire size,
and date the tire was manufactured.
The TIN is molded onto both sides of
the tire, although only one side may
have the date of manufacture.
(5) Tire Ply Material
:The type of cord
and number of plies in the sidewall and
under the tread.
(6) Uniform Tire Quality Grading
(UTQG)
:Tire manufacturers are
required to grade tires based on three
performance factors: treadwear,
traction, and temperature resistance.
For more information see Uniform Tire
Quality Grading 0275.
(7) Maximum Cold Inflation Load
Limit
:Maximum load that can be
carried and the maximum pressure
needed to support that load.
Tire Designations
Tire Size
The example shows a typical passenger
vehicle tire size.
Passenger (P-Metric) Tire
(1) Passenger (P-Metric) Tire:The
United States version of a metric tire
sizing system. The letter "P" as the first
character in the tire size means a
passenger vehicle tire engineered to
standards set by the U.S. Tire and Rim
Association.
(2) Tire Width
:The 3-digit number
indicates the tire section width in
millimeters from sidewall to sidewall.
(3) Aspect Ratio
:A 2-digit number that
indicates the tire height-to-width
measurements. For example, if the tire
size aspect ratio is 75, as shown in
item (3) of the illustration, it would
mean that the tire's sidewall is
75 percent as high as it is wide.