2018 CADILLAC CTS tire size

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
342 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Normal
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0307.
(2) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter. (3)
Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(5) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced. (6)
Or every five years, whichever
comes first. See Cooling System0269.
(7) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years. See Brake Fluid 0276.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
344 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0307.
(2) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter.
(3) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition. (4)
Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(5) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced.
(6) Or every five years, whichever
comes first. See Cooling System0269.
(7) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years. See Brake Fluid 0276.Special Application
Services
.
Severe Commercial Use Vehicles
Only: Lubricate chassis
components every oil change.
. Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care
0 329.

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-
11349156) - 2018 - CRC - 9/29/17
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