2018 CADILLAC XTS tire size

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
VEHICLE CARE 283
W, Y and ZR speed rated tires.
Never exceed the winter tires’
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
dealer or authorized tire service
center should mount or
dismount the tires.
{Warning
Mixing tires of different sizes,
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 tires 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.
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
System 0276. The Tire and Loading Information
label indicates the original
equipment tires on the vehicle.
See
Vehicle Load Limits 0176.
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
(Continued)

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
286 VEHICLE CARE
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel nuts
can be dangerous. It could affect
the braking and handling of the
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.
Professional vehicle wheels have a
unique offset and bolt hole diameter.
Professional vehicle wheels have six wheel nuts. Non-professional vehicle
wheels have five wheel nuts. See
Tire
Changing 0295.
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
be unknown. 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,
(Continued)
Warning (Continued)
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 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 front tires.
If a Tire Goes Flat
It is unusual for a tire to blow out
while driving, especially if the tires are
maintained properly. See Tires0267.
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:

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
VEHICLE CARE 299
17. Lower the jack all the way andremove the jack from under the
vehicle.
18. Tighten the wheel nuts firmly with the wheel wrench.
Storing a Flat or Spare Tire and
Tools
{Warning
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.
1. Turn the wrenchcounterclockwise to remove the
fastener rod.
2. Replace the fastener rod with the one provided in the foam.
3. Turn the wrench clockwise to tighten the fastener rod.
4. Replace the foam, jack and tools, and the tire.
5. Turn the retainer nut clockwise to secure the tire.
6. Place the floor cover on the wheel.
To store the compact spare tire, use
the shorter mounting bolt. The compact spare is for temporary
use only. Replace the compact spare
tire with a full-size tire as soon as
you can.
Compact Spare Tire
{Warning
Driving with more than one
compact spare tire at a time could
result in loss of braking and
handling. This could lead to a crash
and you or others could be injured.
Use only one compact spare tire at
a time.
If this vehicle has a compact spare
tire, it was fully inflated when new;
however, it can lose air over time.
Check the inflation pressure regularly.
It should be 420 kPa (60 psi).
Stop as soon as possible and check
that the spare tire is correctly inflated
after being installed on the vehicle.
The compact spare tire is designed for
temporary use only. The vehicle will
perform differently with the spare tire

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
300 VEHICLE CARE
installed and it is recommended that
the vehicle speed be limited to
80 km/h (50 mph). To conserve the
tread of the spare tire, have the
standard tire repaired or replaced as
soon as convenient and return the
spare tire to the storage area.
When using a compact spare tire, the
AWD (if equipped), ABS, and Traction
Control systems may engage until the
spare tire is recognized by the vehicle,
especially on slippery roads. Adjust
driving to reduce possible wheel slip.
Caution
When the compact spare is
installed, do not take the vehicle
through an automatic car wash
with guide rails. The compact spare
can get caught on the rails which
can damage the tire, wheel, and
other parts of the vehicle.
Do not use the compact spare on
other vehicles. Do not mix the compact spare tire or
wheel with other wheels or tires. They
will not fit. Keep the spare tire and its
wheel together.
Caution
Tire chains will not fit the compact
spare. Using them can damage the
vehicle and the chains. Do not use
tire chains on the compact spare.
Full-Size Spare Tire
If this vehicle came with a full-size
spare tire, it was fully inflated when
new, however, it can lose air over
time. Check the inflation pressure
regularly.
See
Tire Pressure 0274 and Vehicle
Load Limits 0176 for information
regarding proper tire inflation and
loading the vehicle. For instructions
on how to remove, install, or store a
spare tire, see Tire Changing0295. After installing the spare tire on the
vehicle, stop as soon as possible and
check that the spare is correctly
inflated. The spare tire is made to
perform well at speeds up to 112 km/h
(70 mph) at the recommended
inflation pressure, so you can finish
your trip.
Have the damaged or flat road tire
repaired or replaced and installed
back onto the vehicle as soon as
possible so the spare tire will be
available in case it is needed again. Do
not mix tires and wheels of different
sizes, because they will not fit. Keep
the spare tire and its wheel together.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
INDEX 361
E
Electric Parking Brake . . . . . . . . . . . . . . 191
Electric Parking Brake Light . . . . . . . 130
Electrical Equipment, Add-On . . . . . 230
Electrical SystemEngine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Fuses and Circuit Breakers . . . . . . . 260
Instrument Panel Fuse Block . . . . 263
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 243
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 128
Compartment Overview . . . . . . . . . . 236
Coolant Temperature Gauge . . . . . 124
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . . . . . 133
Cooling System . . . . . . . . . . . . . . . . . . . 245
Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Drive Belt Routing . . . . . . . . . . . . . . . . 333
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Oil Life System . . . . . . . . . . . . . . . . . . . . 242 Engine (cont'd)
Oil Pressure Light . . . . . . . . . . . . . . . . . 134
Overheated Protection
Operating Mode . . . . . . . . . . . . . . . . . 250
Overheating . . . . . . . . . . . . . . . . . . . . . . . 249
Power Messages . . . . . . . . . . . . . . . . . . 143
Running While Parked . . . . . . . . . . . 188
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Engine Oil
Temperature Gauge . . . . . . . . . . . . . . . 124
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 157
Equipment, Towing . . . . . . . . . . . . . . . . . 229
Event Data Recorders . . . . . . . . . . . . . . 345
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 158
Extended Parking . . . . . . . . . . . . . . . . . . . 186
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 73
Exterior Lamp Controls . . . . . . . . . . . . 152
Exterior Lamps Off Reminder . . . . . . 153
Exterior Lighting Battery Saver . . . . 158
F
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . 243
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 154
Flashers, Hazard Warning . . . . . . . . . . 155
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286 Flat Tire (cont'd)
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Fluid Automatic Transmission . . . . . . . . . 243
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Power Steering . . . . . . . . . . . . . . . . . . . . 250
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 45
Forward Automatic Braking . . . . . . . . 215
Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Front Seats Heated and Ventilated . . . . . . . . . . . . . 62
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222 Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Economy Driving . . . . . . . . . . . . . . . . . . . 26
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . . . . . . 225
Filling the Tank . . . . . . . . . . . . . . . . . . . 224
Foreign Countries . . . . . . . . . . . . . . . . . 223
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Low Fuel Warning Light . . . . . . . . . 134
Requirements, California . . . . . . . . . 223
Full-Size Spare Tire . . . . . . . . . . . . . . . . . 300

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
INDEX 367
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . 176
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . 269
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
SunshadeRear Window . . . . . . . . . . . . . . . . . . . . . . . . 49
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System
Forward Collision Alert (FCA) . . . . 213
Infotainment . . . . . . . . . . . . . . . . . 159, 346
Systems
Driver Assistance . . . . . . . . . . . . . . . . . 206
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . 122
Text Telephone (TTY) Users . . . . . . . 336
Theft-Deterrent Systems . . . . . . . . . . . . 43Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . 43
Thigh Support Adjustment . . . . . . . . . . 58
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 All-Season . . . . . . . . . . . . . . . . . . . . . . . . . 268
Buying New Tires . . . . . . . . . . . . . . . . . 282
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Compact Spare . . . . . . . . . . . . . . . . . . . . 299
Designations . . . . . . . . . . . . . . . . . . . . . . 271
Different Size . . . . . . . . . . . . . . . . . . . . . . 283 Tires (cont'd)
Full-Size Spare . . . . . . . . . . . . . . . . . . . . 300
If a Tire Goes Flat . . . . . . . . . . . . . . . . 286
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 280
Low Profile . . . . . . . . . . . . . . . . . . . . . . . . 268
Pressure . . . . . . . . . . . . . . . . . . . . . . 274, 276
Pressure Light . . . . . . . . . . . . . . . . . . . . . 133
Pressure Monitor Operation . . . . . . 277
Pressure Monitor System . . . . . . . . 276
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Sealant and Compressor Kit . . . . . 288
Sealant and Compressor Kit,
Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Sidewall Labeling . . . . . . . . . . . . . . . . . 269
Terminology and Definitions . . . . 272
Uniform Tire Quality Grading . . . . 284
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Wheel Replacement . . . . . . . . . . . . . . 285
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Towing
Driving Characteristics . . . . . . . . . . . 226
Equipment . . . . . . . . . . . . . . . . . . . . . . . . 229
General Information . . . . . . . . . . . . . . 226
Recreational Vehicle . . . . . . . . . . . . . . 304
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 Towing (cont'd)
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Traction Control System (TCS)/
StabiliTrak Light . . . . . . . . . . . . . . . . 133
Limited-Slip Rear Axle . . . . . . . . . . . 195
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . . 193
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 188
Fluid, Automatic . . . . . . . . . . . . . . . . . . 243
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . 122
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Turn and Lane-Change Signals . . . . 155
U
Uniform Tire Quality Grading . . . . . . 284
Universal Remote System . . . . . . . . . . 148 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Programming . . . . . . . . . . . . . . . . . . . . . . 148
Using This Manual . . . . . . . . . . . . . . . . . . . . 2

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
368 INDEX
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . . . . . . 42
Canadian Owners . . . . . . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Identification Number (VIN) . . . . . 330
Load Limits . . . . . . . . . . . . . . . . . . . . . . . 176
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Personalization . . . . . . . . . . . . . . . . . . . 143
Remote Start . . . . . . . . . . . . . . . . . . . . . . . . 34
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Speed Messages . . . . . . . . . . . . . . . . . . . 143
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Vehicle Ahead Indicator . . . . . . . . . . . . 132
Vehicle Care
Storing the Tire Sealant andCompressor Kit . . . . . . . . . . . . . . . . . . 295
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 274
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . 166
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
W
Warning Brake System Light . . . . . . . . . . . . . . . 129
Caution and Danger . . . . . . . . . . . . . . . . . 3 Warning (cont'd)
Lane Departure (LDW) . . . . . . . . . . . 219
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Warnings Hazard Flashers . . . . . . . . . . . . . . . . . . . 155
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . 251
Wheels Alignment and Tire Balance . . . . . 285
Different Size . . . . . . . . . . . . . . . . . . . . . . 283
Replacement . . . . . . . . . . . . . . . . . . . . . . 285
When It Is Time for New Tires . . . . 281
Where to Put the Restraint . . . . . . . . . 93
Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Windshield Replacement . . . . . . . . . . . . . . . . . . . . . . 256
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . 111
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . 268
Wiper Blade Replacement . . . . . . . . . . 255
Wireless Charging . . . . . . . . . . . . . . . . . . 115