2020 CADILLAC XT6 wheel size

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
VEHICLE CARE 307
{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 0305 and
Accessories and Modifications 0260.
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 norm
due to variations in driving habits,
service practices and differences
in road characteristics and
climate.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
VEHICLE CARE 309
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
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
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 265/45R21 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
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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
310 VEHICLE CARE
Caution
If the vehicle is equipped with a tire
size other than 265/45R21, 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
front axle. Do not use chains on the
tires of the rear 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
It is unusual for a tire to blow out
while driving, especially if the tires are
maintained properly. SeeTires0289. If air goes out of a tire, it is much
more likely to leak out slowly. But if
there ever is 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
vehicle. It may be very bumpy and
noisy. Gently brake to a stop, well off
the road, if possible.
{Warning
Driving on a flat tire will cause
permanent damage to the tire.
Re-inflating a tire after it has been
driven on while severely
(Continued)
Warning (Continued)
underinflated or flat may cause a
blowout and a serious crash. Never
attempt to re-inflate a tire that has
been driven on while severely
underinflated or flat. Have your
dealer or an authorized tire service
center repair or replace the flat tire
as soon as possible.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the appropriate
safety equipment and training. If a
jack is provided with the vehicle, it
is designed only for changing a flat
tire. If it is used for anything else,
you or others could be badly injured
or killed if the vehicle slips off the
jack. If a jack is provided with the
vehicle, only use it for changing a
flat tire.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
VEHICLE CARE 315
14. Tighten the wheel nuts firmly ina crisscross sequence, as shown.
15. Lower the jack all the way and remove the jack from under the
vehicle.
16. Tighten the wheel nuts firmly with the wheel wrench.
When reinstalling the wheel cover or
center cap on the full-size tire, tighten
all six plastic caps hand snug with the
aid of the wheel wrench and tighten
them with the wheel wrench an
additional one-quarter of a turn.
Caution
Wheel covers will not fit on the
vehicle's compact spare. If you try
to put a wheel cover on the
compact spare, the cover or the
spare could be damaged.
{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.
Storing the Flat Tire
1. Liftgate Hinges
2. Cable
3. Center of the Wheel
4. Door Striker

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
316 VEHICLE CARE
To store the flat tire:
1. Remove the cable package fromunder the spare tire, jack, and
tools.
2. Remove the small cap by tapping the back of the cap with the
extension of the shaft, if the
vehicle has aluminum wheels.
3. Put the jack, tool container, and cargo management system tray
back in their original location.
4. Put the flat tire in the cargo bin with the valve stem facing the
rear of the vehicle. 5. Pull the cable through the door
striker and the center of the
wheel.
6. Open the lift gate to 3 / 4 door
location and adjust the door
automatically or manually until
there is enough space to hook
the cable to the door hinges. See
Liftgate 021.
7. Hook the other end of the cable onto the outside portion of the
liftgate hinge on the other side of
the vehicle.
8. Pull on the cable to make sure it is secure.
9. Make sure the metal tube is
centered at the striker. Push the
tube toward the front of the
vehicle.
10. Close the liftgate and make sure it is fully latched.
The compact spare is for temporary
use only. Replace the compact spare
tire with a full-size tire as soon as
possible.
Storing the Compact Spare Tire
and Tools
To store the spare tire and tools: 1. Open the liftgate. See Liftgate
0 21.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
VEHICLE CARE 317
2. Lift the load floor.
3. Remove the cargo managementsystem tray.
4. Put back the spare tire and all tools as they were stored in the
rear storage compartment.
5. Install the cargo management system tray and load floor.
The compact spare is for temporary
use only. Replace the compact spare
tire with a full-size tire as soon as
possible.
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
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
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.
Performance of the All-Wheel
Drive (AWD) system will be
automatically reduced to protect the
system when using the compact spare.
To restore the AWD and prevent excessive wear on the clutch in the
AWD, replace the compact spare tire
with a full-size tire as soon as
possible.
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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
382 INDEX
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289All-Season . . . . . . . . . . . . . . . . . . . . . . . . . 290
Buying New Tires . . . . . . . . . . . . . . . . . 305
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Compact Spare . . . . . . . . . . . . . . . . . . . . 317
Designations . . . . . . . . . . . . . . . . . . . . . . 293
Different Size . . . . . . . . . . . . . . . . . . . . . . 306
If a Tire Goes Flat . . . . . . . . . . . . . . . . 310
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 303
Pressure . . . . . . . . . . . . . . . . . . . . . . 296, 298
Pressure Light . . . . . . . . . . . . . . . . . . . . . 126
Pressure Monitor Operation . . . . . . 299
Pressure Monitor System . . . . . . . . 298
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Sidewall Labeling . . . . . . . . . . . . . . . . . 291
Terminology and Definitions . . . . 294
Uniform Tire Quality Grading . . . . 307
Wheel Alignment and TireBalance . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Wheel Replacement . . . . . . . . . . . . . . 308
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . 241
Towing Driving Characteristics . . . . . . . . . . . 244 Towing (cont'd)
Equipment . . . . . . . . . . . . . . . . . . . . . . . . 252
General Information . . . . . . . . . . . . . . 244
Recreational Vehicle . . . . . . . . . . . . . . 321
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Trailer Sway Control (TSC) . . . . . . . 255
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Traction Control System
(TCS)/StabiliTrak Light . . . . . . . . . 125
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . . 200
Trailer
Sway Control (TSC) . . . . . . . . . . . . . . . 255
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 190
Fluid, Automatic . . . . . . . . . . . . . . . . . . 267
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . 116
Turn and Lane-Change Signals . . . . 148
U
Uniform Tire Quality Grading . . . . . . 307
Universal Remote System . . . . . . . . . . 141 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Universal Remote System (cont'd)
Programming . . . . . . . . . . . . . . . . . . . . . . 141
Using This Manual . . . . . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . . . . . . 29
Canadian Owners . . . . . . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Identification Number (VIN) . . . . . 346
Load Limits . . . . . . . . . . . . . . . . . . . . . . . 176
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Personalization . . . . . . . . . . . . . . . . . . . 135
Remote Start . . . . . . . . . . . . . . . . . . . . . . . . 15
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Speed Messages . . . . . . . . . . . . . . . . . . . 135
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Vehicle Ahead Indicator . . . . . . . . . . . . 124
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 296
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Vehicle Security Steering Column Lock . . . . . . . . . . . . . . 31
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . 162
Video Recorder . . . . . . . . . . . . . . . . . . . . . . 239
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
INDEX 383
W
WarningBrake System Light . . . . . . . . . . . . . . . 122
Caution and Danger . . . . . . . . . . . . . . . . . 3
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Warnings Hazard Flashers . . . . . . . . . . . . . . . . . . . 148
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . 273
Wheels Alignment and Tire Balance . . . . . 308
Different Size . . . . . . . . . . . . . . . . . . . . . . 306
Replacement . . . . . . . . . . . . . . . . . . . . . . 308
When It Is Time for New Tires . . . . 304
Where to Put the Restraint . . . . . . . . . 81
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Windshield Replacement . . . . . . . . . . . . . . . . . . . . . . 278
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . 106
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . 290
Wiper Blade Replacement . . . . . . . . . . 277
Wipers Rear Washer . . . . . . . . . . . . . . . . . . . . . . 107
Wireless Charging . . . . . . . . . . . . . . . . . . 110