wheel size CHEVROLET CORVETTE 2020 User Guide

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Vehicle Care 263
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
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0261 and
Accessories and Modifications
0 211.
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:
Treadwear 200 Traction AA
Temperature A
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 would wear one and
one-half (1½) times as well on
the government course as a tire
graded 100. The relative
performance of tires depends
upon the actual conditions of
their use, however, and may
depart significantly from the

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
266 Vehicle Care
Tightening Wheel Lug Nuts
{Warning
Never use oil or grease on studs
or the threads of the wheel nuts.
The wheel nuts might come loose
and the wheel could fall off,
causing a crash.
{Warning
Incorrect wheel nuts or improperly
tightened wheel nuts can cause
the wheel to become loose and
even come off. This could lead to
a crash. Be sure to use the
correct wheel nuts. If you have to
replace them, be sure to get new
GM original equipment
wheel nuts.
Caution
Improperly tightened wheel nuts
can lead to brake pulsation and
rotor damage. To avoid expensive
brake repairs, evenly tighten the
wheel nuts in the proper
sequence and to the proper
torque specification.
Tighten the wheel lug nuts firmly in
a crisscross sequence. See
Capacities and Specifications0299.
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.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Index 333
Service (cont'd)Accessories and
Modifications . . . . . . . . . . . . . . . . .211
Doing Your Own Work . . . . . . . . 213
Maintenance Records . . . . . . . . 297
Maintenance, General Information . . . . . . . . . . . . . . . . . . 284
Parts Identification . . . . . . . . . . . . 298
Scheduling Appointments . . . . . 308
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . 105
Services
Special Application . . . . . . . . . . . 292
Servicing the Airbag . . . . . . . . . . . . . 72
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 168
Out of Park . . . . . . . . . . . . . . . . . . . 169
Side Blind Zone Alert (SBZA) . . . 202
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 128
Special Application Services . . . . 292
Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . . 299
Speedometer . . . . . . . . . . . . . . . . . . . . 98
Start Vehicle, Remote . . . . . . . . . . . 15
Starting the Engine . . . . . . . . . . . . . 166
Steering . . . . . . . . . . . . . . . . . . . . . . . . 148 Heated Wheel . . . . . . . . . . . . . . . . . . 87 Steering (cont'd)
Wheel Adjustment . . . . . . . . . . . . . . 87
Wheel Controls . . . . . . . . . . . . . . . . . 87
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Storage Areas Center Console . . . . . . . . . . . . . . . . . 85
Convenience Net . . . . . . . . . . . . . . . 85
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Glove Box . . . . . . . . . . . . . . . . . . . . . . 83
Storage Compartments . . . . . . . . . . 83
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 159
Summer Tires . . . . . . . . . . . . . . . . . . 248
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 37
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Engine Air Filter Life . . . . . . . . . . 224
Front Lift . . . . . . . . . . . . . . . . . . . . . . 191
Infotainment . . . . . . . . . . . . . 132, 315
Systems Driver Assistance . . . . . . . . . . . . . 199
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . 98
Text Telephone (TTY) Users . . . . 305
Theft-Deterrent Systems . . . . . . . . . 28 Theft-Deterrent Systems (cont'd)
Immobilizer . . . . . . . . . . . . . . . . . . . . . 28
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 All-Season . . . . . . . . . . . . . . . . . . . . 246
Buying New Tires . . . . . . . . . . . . . 261
Chains . . . . . . . . . . . . . . . . . . . . . . . . 266
Designations . . . . . . . . . . . . . . . . . 250
Different Size . . . . . . . . . . . . . . . . . 262
If a Tire Goes Flat . . . . . . . . . . . . 267
Inspection . . . . . . . . . . . . . . . . . . . . 259
Lifting the Vehicle . . . . . . . . . . . . . .211
Low Profile . . . . . . . . . . . . . . . . . . . 248
Pressure . . . . . . . . . . . . . . . . . 253, 254
Pressure Light . . . . . . . . . . . . . . . . 106
Pressure Monitor Operation . . 256
Pressure Monitor System . . . . . 255
Rotation . . . . . . . . . . . . . . . . . . . . . . 259
Run-Flat . . . . . . . . . . . . . . . . . . . . . . 247
Sidewall Labeling . . . . . . . . . . . . . 249
Terminology and Definitions . . 251
Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 263
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 264
Wheel Replacement . . . . . . . . . . 265
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . 260

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
334 Index
Tires (cont'd)Winter . . . . . . . . . . . . . . . . . . . . . . . . 247
Top Tier Fuel . . . . . . . . . . . . . . . . . . . 204
Towing General Information . . . . . . . . . . 208
Recreational Vehicle . . . . . . . . . . 273
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 271
Track Events and Competitive Driving . . . . . . . . . . . 150
Traction Limited-Slip Differential . . . . . . . 195
Off Light . . . . . . . . . . . . . . . . . . . . . . 105
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 182
Transmission Dual Clutch . . . . . . . . . . . . . . . . . . . 171
Dual Clutch Fluid . . . . . . . . . . . . . 222
Dual Clutch Fluid Life
System . . . . . . . . . . . . . . . . . . . . . . 223
Temperature Gauge . . . . . . . . . . . . 99
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 308
Trip Odometer . . . . . . . . . . . . . . . . . . . 98
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 128U
Underhood CompartmentOverview . . . . . . . . . . . . . . . . . . . . . . 214
Uniform Tire Quality Grading . . . 263
Universal Remote System . . . . . . 121 Operation . . . . . . . . . . . . . . . . . . . . . 123
Programming . . . . . . . . . . . . . . . . . 121
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 26
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 148
Identification Number (VIN) . . . 298
Load Limits . . . . . . . . . . . . . . . . . . . 160
Messages . . . . . . . . . . . . . . . . . . . . .114
Personalization . . . . . . . . . . . . . . . .116
Remote Start . . . . . . . . . . . . . . . . . . . 15
Security . . . . . . . . . . . . . . . . . . . . . . . . 26
Speed Messages . . . . . . . . . . . . . .115
Towing . . . . . . . . . . . . . . . . . . . . . . . . 271
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . . . 253
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 314
Ventilation, Air . . . . . . . . . . . . . . . . . . 143
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
W
Warning Brake System Light . . . . . . . . . . . 104
Caution and Danger . . . . . . . . . . . . . 3
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . . . 93
Warnings Hazard Flashers . . . . . . . . . . . . . . 128
Washer Fluid . . . . . . . . . . . . . . . . . . . 231
Wheels Alignment and Tire Balance . . 264
Different Size . . . . . . . . . . . . . . . . . 262
Replacement . . . . . . . . . . . . . . . . . 265
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Windows . . . . . . . . . . . . . . . . . . . . . . . . 35 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Windshield
Replacement . . . . . . . . . . . . . . . . . 236
Wiper/Washer . . . . . . . . . . . . . . . . . . 87
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 158
Winter Tires . . . . . . . . . . . . . . . . . . . . 247
Wiper Blade Replacement . . . . . . 236
Wireless Charging . . . . . . . . . . . . . . . 90