2018 CADILLAC CTS wheel size

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
308 VEHICLE CARE
Use this rotation pattern when
rotating tires of the same size
installed on all four wheel
positions.
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 Loading
Information label after the tires
have been rotated. SeeTire
Pressure 0301 and Vehicle Load
Limits 0188. Reset the Tire Pressure Monitor
System. See
Tire Pressure Monitor
Operation 0304.
Check that all wheel nuts are
properly tightened. See “Wheel
Nut Torque ”under Capacities and
Specifications 0353.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any rust
or dirt from places where the wheel
attaches to the vehicle. In an
emergency, a cloth or a paper towel
can be used; however, use a scraper
or wire brush later to remove all
rust or dirt.
Lightly coat the center of the
wheel hub with wheel bearing
grease after a wheel change or tire
rotation to prevent corrosion or rust build-up. Do not get grease
on the flat wheel mounting
surface or on the wheel nuts or
bolts.
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.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
310 VEHICLE CARE
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. SeeTire
Rotation 0307 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
(Continued)
Warning (Continued)
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 correct size, brand,
and type of tire on all four 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
(Continued)
Warning (Continued)
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 0304.
The Tire and Loading Information
label indicates the original
equipment tires on the vehicle.
See Vehicle Load Limits 0188.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
VEHICLE CARE 311
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 developed for the
vehicle, and have them properly
installed by a GM certified
technician.See
Buying New Tires 0309 and
Accessories and Modifications 0254.
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

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
VEHICLE CARE 313
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or corroded.
If wheel nuts keep coming loose, the
wheel, wheel bolts, and wheel nuts
should be replaced. If the wheel leaks
air, replace it. Some aluminum wheels
can be repaired. See your dealer if any
of these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the same
load-carrying capacity, diameter,
width, offset, and be mounted the
same way as the one it replaces.
Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor System
(TPMS) sensors with new GM original
equipment parts.
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel nuts
can be dangerous. It could affect
the braking and handling of the(Continued)
Warning (Continued)
vehicle. Tires can lose air, and
cause loss of control, causing a
crash. Always use the correct wheel,
wheel bolts, and wheel nuts for
replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or odometer
calibration, headlamp aim, bumper
height, vehicle ground clearance,
and tire or tire chain clearance to
the body and chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used one
is dangerous. How it has been used
or how far it has been driven may(Continued)
Warning (Continued)
be unknown. It could fail suddenly
and cause a crash. When replacing
wheels, use a new GM original
equipment wheel.
Tire Chains
{Warning
If the vehicle has P245/40R18,
245/40R18, 275/35R18, 255/35R19,
265/35ZR19, or 295/30ZR19 size
tires, 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(Continued)

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
314 VEHICLE CARE
Warning (Continued)
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 rear tires.
Caution
If the vehicle is equipped with a tire
size other than P245/40R18,
245/40R18, 275/35R18, 255/35R19,
265/35ZR19, or 295/30ZR19 use tire
chains only where legal and only
when necessary. Use low profile
chains that add no more than
12 mm thickness to the tire tread
and inner sidewall. Use chains that
are the proper size for the tires.
Install them on the tires of the rear
axle. Don't use chains on the tires(Continued)
Caution (Continued)
of the front axle. Tighten them as
tightly as possible with the ends
securely fastened. Drive slowly and
follow the chain manufacturer's
instructions. If the chains contact
the vehicle, stop and retighten
them. If the contact continues, slow
down until it stops. Driving too fast
or spinning the wheels with chains
on will damage the vehicle.
If a Tire Goes Flat
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
Tires 0295.
{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
(Continued)
Warning (Continued)
be sure the proper tools and
procedures, as described in the
service manual, are used.
It is unusual for a tire to blow out
while driving, especially if the tires are
maintained properly. See Tires0294.
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

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
INDEX 391
SunshadeRear Window . . . . . . . . . . . . . . . . . . . . . . . . 52
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward Collision Alert (FCA) . . . . 232
Infotainment . . . . . . . . . . . . . . . . . 161, 370
Systems
Driver Assistance . . . . . . . . . . . . . . . . . 225
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . 122
Text Telephone (TTY) Users . . . . . . . 359
Theft-Deterrent Systems . . . . . . . . . . . . 46Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . 46
Thigh Support Adjustment . . . . . . . . . . 60
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 All-Season . . . . . . . . . . . . . . . . . . . . . . . . . 295
Buying New Tires . . . . . . . . . . . . . . . . . 309
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Designations . . . . . . . . . . . . . . . . . . . . . . 298
Different Size . . . . . . . . . . . . . . . . . . . . . . 311
If a Tire Goes Flat . . . . . . . . . . . . . . . . 314
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 307
Low Profile . . . . . . . . . . . . . . . . . . . . . . . . 296
Pressure . . . . . . . . . . . . . . . . . . . . . . 301, 302
Pressure Light . . . . . . . . . . . . . . . . . . . . . 133
Pressure Monitor Operation . . . . . . 304 Tires (cont'd)
Pressure Monitor System . . . . . . . . 303
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Run-Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Sealant and Compressor Kit . . . . . 315
Sealant and Compressor Kit,
Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Sidewall Labeling . . . . . . . . . . . . . . . . . 297
Terminology and Definitions . . . . 299
Uniform Tire Quality Grading . . . . 311
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Wheel Replacement . . . . . . . . . . . . . . 313
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Towing Driving Characteristics . . . . . . . . . . . 246
Equipment . . . . . . . . . . . . . . . . . . . 250, 251
General Information . . . . . . . . . . . . . . 246
Recreational Vehicle . . . . . . . . . . . . . . 326
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 249–251
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Track Events and Competitive Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Traction Control System (TCS)/StabiliTrak Light . . . . . . . . . . . . . . . . 132 Traction (cont'd)
Limited-Slip Differential . . . . . . . . . . 214
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Traction Control/Electronic
Stability Control . . . . . . . . . . . . . . . . . . . 206
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . 249–251
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 200
Fluid, Automatic . . . . . . . . . . . . . . . . . . 266
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . 122
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Turn and Lane-Change Signals . . . . 157
U
Uniform Tire Quality Grading . . . . . . 311
Universal Remote System . . . . . . . . . . 149 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Programming . . . . . . . . . . . . . . . . . . . . . . 149
Using This Manual . . . . . . . . . . . . . . . . . . . . 3
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . . . . . . 44
Canadian Owners . . . . . . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Identification Number (VIN) . . . . . 352

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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392 INDEX
Vehicle (cont'd)Load Limits . . . . . . . . . . . . . . . . . . . . . . . 188
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Personalization . . . . . . . . . . . . . . . . . . . 144
Remote Start . . . . . . . . . . . . . . . . . . . . . . . . 37
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Speed Messages . . . . . . . . . . . . . . . . . . . 144
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Vehicle Ahead Indicator . . . . . . . . . . . . 131
Vehicle Care
Storing the Tire Sealant andCompressor Kit . . . . . . . . . . . . . . . . . . 322
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 301
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
Vehicle-to-Vehicle . . . . . . . . . . . . . . . . . . 240
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . 174
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
W
Warning Brake System Light . . . . . . . . . . . . . . . 129
Caution and Danger . . . . . . . . . . . . . . . . . 3
Lane Departure (LDW) . . . . . . . . . . . 238
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Warnings
Hazard Flashers . . . . . . . . . . . . . . . . . . . 157
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . 275
Wheels Alignment and Tire Balance . . . . . 312
Different Size . . . . . . . . . . . . . . . . . . . . . . 311
Replacement . . . . . . . . . . . . . . . . . . . . . . 313
When It Is Time for New Tires . . . . 308
Where to Put the Restraint . . . . . . . . . 94
Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Windshield Replacement . . . . . . . . . . . . . . . . . . . . . . 281
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . 111
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . 295
Wiper Blade Replacement . . . . . . . . . . 280
Wireless Charging . . . . . . . . . . . . . . . . . . 115