2019 CADILLAC CTS tire size

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/8/18
IN BRIEF 27
Car Wash Guidelines
Caution
Some automatic car washes can
cause damage to the vehicle, wheels
and ground effects. Automatic car
washes are not recommended, due
to lack of clearance for the
undercarriage and/or wide rear tires
and wheels. See "Washing the
Vehicle" underExterior Care0335.
Driving for Better Fuel
Economy
Driving habits can affect fuel mileage.
Here are some driving tips to get the
best fuel economy possible:
.
Set the climate controls to the
desired temperature after the
engine is started, or turn them off
when not required.
. Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid abrupt
stops. .
Avoid idling the engine for long
periods of time.
. When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed limits
or drive more slowly when
conditions require.
. Keep vehicle tires properly
inflated.
. Combine several trips into a
single trip.
. Replace the vehicle's tires with the
same TPC Spec number molded
into the tire's sidewall near
the size.
. Follow recommended scheduled
maintenance.
Roadside Service
U.S.: 1-800-224-1400
Canada: 1-800-882-1112
TTY Users (U.S. Only): 1-888-889-2438
New Cadillac owners are automatically
enrolled in the Roadside Service
Program.
See Roadside Service 0367.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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SEATS AND RESTRAINTS 87
Adding Equipment to the
Airbag-Equipped Vehicle
Adding accessories that change the
vehicle's frame, bumper system,
height, front end, or side sheet metal
may keep the airbag system from
working properly.
The operation of the airbag system
can also be affected by changing,
including improperly repairing or
replacing, any parts of the following:
.Airbag system, including airbag
modules, front or side impact
sensors, sensing and diagnostic
module, or airbag wiring
. Front seats, including stitching,
seams or zippers
. Seat belts
. Steering wheel, instrument panel,
overhead console, ceiling trim,
or pillar garnish trim
. Inner door seals, including
speakers Your dealer and the service manual
have information about the location of
the airbag modules and sensors,
sensing and diagnostic module, and
airbag wiring along with the proper
replacement procedures.
In addition, the vehicle has a
passenger sensing system for the front
outboard passenger position, which
includes sensors that are part of the
passenger seat. The passenger sensing
system may not operate properly if
the original seat trim is replaced with
non-GM covers, upholstery, or trim; or
with GM covers, upholstery, or trim
designed for a different vehicle. Any
object, such as an aftermarket seat
heater or a comfort-enhancing pad or
device, installed under or on top of
the seat fabric, could also interfere
with the operation of the passenger
sensing system. This could either
prevent proper deployment of the
passenger airbag(s) or prevent the
passenger sensing system from
properly turning off the passenger
airbag(s). See
Passenger Sensing
System 082. If the vehicle has rollover roof-rail
airbags, see
Different Size Tires and
Wheels 0317 for additional important
information.
If the vehicle must be modified
because you have a disability and have
questions about whether the
modifications will affect the vehicle's
airbag system, or if you have
questions about whether the airbag
system will be affected if the vehicle is
modified for any other reason, call
Customer Assistance. See Customer
Assistance Offices 0365.
Airbag System Check
The airbag system does not need
regularly scheduled maintenance or
replacement. Make sure the airbag
readiness light is working. See Airbag
Readiness Light 0127.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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190 DRIVING AND OPERATING
The Tire and Loading Information
label also shows the tire size of
the original equipment tires (3)
and the recommended cold tire
inflation pressures (4). For more
information on tires and inflation
seeTires 0300 and Tire Pressure
0 307.
There is also important loading
information on the Certification
label. It may show the Gross
Vehicle Weight Rating (GVWR)
and the Gross Axle Weight Rating
(GAWR) for the front and rear
axle. See “Certification Label” later
in this section.
“Steps for Determining Correct
Load Limit–
1.Locate the statement "The
combined weight of
occupants and cargo should
never exceed XXX kg or
XXX lbs." on your vehicle’s
placard.
2.Determine the combined
weight of the driver and
passengers that will be riding
in your vehicle.
3.Subtract the combined weight
of the driver and passengers
from XXX kg or XXX lbs.
4.The resulting figure equals
the available amount of cargo
and luggage load capacity. For
example, if the "XXX" amount
equals 1400 lbs. and there
will be five 150 lb passengers
in your vehicle, the amount
of available cargo and luggage
load capacity is 650 lbs.
(1400-750 (5 x 150) =
650 lbs.)
5.Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely
exceed the available cargo
and luggage load capacity
calculated in Step 4.
6.If your vehicle will be towing
a trailer, load from your
trailer will be transferred to
your vehicle. Consult this
manual to determine how
this reduces the available
cargo and luggage load
capacity of your vehicle.”
See Trailer Towing (V6 Engine, Non
Twin Turbo) 0252 orTrailer
Towing (V6 Twin Turbo) 0254 for
important information on towing
a trailer, towing safety rules, and
trailering tips.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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VEHICLE CARE 257
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 258
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 258
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 259
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 259
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 259
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 261
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 268
Engine Oil Life System . . . . . . . . . . . 271
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Engine Air Cleaner/Filter . . . . . . . . . 272
Cooling System . . . . . . . . . . . . . . . . . . . 274
Engine Overheating . . . . . . . . . . . . . . 279
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 280
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 282
Battery - North America . . . . . . . . . 283
All-Wheel Drive . . . . . . . . . . . . . . . . . . 284 Starter Switch Check . . . . . . . . . . . . . 285
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 286
Wiper Blade Replacement . . . . . . . 286
Windshield Replacement . . . . . . . . 287
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 287
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 288
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 289
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . 289
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 289
LED Lighting . . . . . . . . . . . . . . . . . . . . . 289
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 289
License Plate Lamp . . . . . . . . . . . . . . 290
Electrical System
Electrical System Overload . . . . . . 291
Fuses and Circuit Breakers . . . . . . 291
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Instrument Panel Fuse Block . . . . 295
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
All-Season Tires . . . . . . . . . . . . . . . . . . 301
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 301
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . 301
Low-Profile Tires . . . . . . . . . . . . . . . . . 302
Summer Tires . . . . . . . . . . . . . . . . . . . . 302
Tire Sidewall Labeling . . . . . . . . . . . 303
Tire Designations . . . . . . . . . . . . . . . . . 304
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . . . . . 305
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 307
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . 308
Tire Pressure Monitor System . . . 309
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 310
Tire Inspection . . . . . . . . . . . . . . . . . . . 313
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 313
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Buying New Tires . . . . . . . . . . . . . . . . 315
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Uniform Tire Quality Grading . . . 317
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Wheel Replacement . . . . . . . . . . . . . . 319
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 319
If a Tire Goes Flat . . . . . . . . . . . . . . . . 320

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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VEHICLE CARE 301
All-Season Tires
This vehicle may come with all-season
tires. These tires are designed to
provide good overall performance on
most road surfaces and weather
conditions. Original equipment tires
designed to GM's specific tire
performance criteria have a TPC
specification code molded onto the
sidewall. Original equipment
all-season tires can be identified by
the last two characters of this TPC
code, which will be“MS.”
Consider installing winter tires on the
vehicle if frequent driving on snow or
ice-covered roads is expected.
All-season tires provide adequate
performance for most winter driving
conditions, but they may not offer the
same level of traction or performance
as winter tires on snow or ice-covered
roads. See Winter Tires 0301.
Winter Tires
This vehicle was not originally
equipped with winter tires. Winter
tires are designed for increased
traction on snow and ice-covered roads. Consider installing winter tires
on the vehicle if frequent driving on
ice or snow covered roads is expected.
See your dealer for details regarding
winter tire availability and proper tire
selection. Also, see
Buying New Tires
0 315.
With winter tires, there may be
decreased dry road traction, increased
road noise, and shorter tread life.
After changing to winter tires, be alert
for changes in vehicle handling and
braking.
If using winter tires:
. Use tires of the same brand and
tread type on all four wheel
positions.
. Use only radial ply tires of the
same size, load range, and speed
rating as the original equipment
tires.
Winter tires with the same speed
rating as the original equipment tires
may not be available for H, V, W, Y,
and ZR speed rated tires. If winter
tires with a lower speed rating are
chosen, never exceed the tire's
maximum speed capability.
Run-Flat Tires
This vehicle, when new, may have had
run-flat tires. There is no spare tire,
no tire changing equipment, and no
place to store a tire in the vehicle.
The vehicle also has a Tire Pressure
Monitor System (TPMS) that indicates
a loss of tire pressure in any of the
tires.
{Warning
If the low tire warning light displays
on the instrument cluster, the
handling capabilities will be
reduced during severe maneuvers.
Driving too fast could cause loss of
control and you or others could be
injured. Do not drive over 90 km/h
(55 mph) when the low tire warning
light is displayed. Drive cautiously
and check the tire pressures as
soon as possible.
Run-flat tires can be driven on with
no air pressure. There is no need to
stop on the side of the road to change
the tire. Continue driving; however, do

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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302 VEHICLE CARE
not drive too far or too fast. Driving
on the tire may not be possible if
there is permanent damage. To
prevent permanent damage, keep
speed below 80 km/h (50 mph). With
a light load the vehicle can be driven
up to 100 km (60 mi); with a
moderate load 80 km (50 mi); and a
heavy load 45 km (25 mi). As soon as
possible, contact the nearest
authorized GM or run-flat servicing
facility for inspection and repair or
replacement.
When driving on a deflated run-flat
tire, avoid potholes and other road
hazards that could damage the tire
and/or wheel beyond repair. When a
tire has been damaged, or driven any
distance while deflated, check with an
authorized run-flat tire service center
to determine whether the tire can be
repaired or should be replaced. To
maintain the run-flat feature, all
replacement tires must be run-flat
tires.
To locate the nearest GM or run-flat
servicing facility, call Customer
Assistance.The valve stems on run-flat tires have
sensors that are part of the TPMS. See
Tire Pressure Monitor System
0309.
These sensors contain batteries that
are designed to last for 10 years under
normal driving conditions. See your
dealer for wheel or sensor
replacement.
Caution
Using liquid sealants can damage
the tire valves and tire pressure
monitor sensors in the run-flat
tires. This damage is not covered by
the vehicle warranty. Do not use
liquid sealants in run-flat tires.
Low-Profile Tires
If the vehicle has 255/35R19,
265/35ZR19, or 295/30ZR19 size
tires, they are classified as
low-profile tires. Caution
Low-profile tires are more
susceptible to damage from road
hazards or curb impact than
standard profile tires. Tire and/or
wheel assembly damage can occur
when coming into contact with
road hazards like potholes, or sharp
edged objects, or when sliding into
a curb. The warranty does not cover
this type of damage. Keep tires set
to the correct inflation pressure and
when possible, avoid contact with
curbs, potholes, and other road
hazards.
Summer Tires
High Performance Summer Tires
This vehicle may come with
245/40R18 (front) and 275/35R18
(rear) or 265/35ZR19 (front) and
295/30ZR19 (rear) high performance
summer tires. These tires have a
special tread and compound that are
optimized for maximum dry and wet
road performance. This special tread

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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VEHICLE CARE 303
and compound will have decreased
performance in cold climates, and on
ice and snow. It is recommended that
winter tires be installed on the vehicle
if frequent driving at temperatures
below approximately 5 °C (40 °F) or on
ice or snow covered roads is expected.
SeeWinter Tires 0301.
Caution
High performance summer tires
have rubber compounds that lose
flexibility and may develop surface
cracks in the tread area at
temperatures below −7 °C (20 °F).
Always store high performance
summer tires indoors and at
temperatures above −7 °C (20 °F)
when not in use. If the tires have
been subjected to −7 °C (20 °F) or
less, let them warm up in a heated
space to at least 5 °C (40 °F) for
24 hours or more before being
installed or driving a vehicle on
which they are installed. Do not
apply heat or blow heated air
(Continued)
Caution (Continued)
directly on the tires. Always inspect
tires before use. SeeTire Inspection
0 313.
Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The
examples show a typical passenger
tire sidewall.
Passenger (P-Metric) Tire Example
(1) Tire Size:The tire size is a
combination of letters and
numbers used to define a
particular tire's width, height,
aspect ratio, construction type,
and service description. See the
“Tire Size ”illustration later in this
section for more detail.
(2) TPC Spec (Tire Performance
Criteria Specification)
:Original
equipment tires designed to GM's
specific tire performance criteria
have a TPC specification code
molded onto the sidewall. GM's
TPC specifications meet or exceed
all federal safety guidelines.
(3) DOT (Department of
Transportation)
:The
Department of Transportation
(DOT) code indicates that the tire
is in compliance with the U.S.
Department of Transportation
Motor Vehicle Safety Standards.

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304 VEHICLE CARE
DOT Tire Date of Manufacture:
The last four digits of the TIN
indicate the tire manufactured
date. The first two digits represent
the week (01-52) and the last two
digits, the year. For example, the
third week of the year 2010 would
have a four-digit DOT date
of 0310.
(4) Tire Identification Number
(TIN)
:The letters and numbers
following the DOT code are the
Tire Identification Number (TIN).
The TIN shows the manufacturer
and plant code, tire size, and date
the tire was manufactured. The
TIN is molded onto both sides of
the tire, although only one side
may have the date of
manufacture.
(5) Tire Ply Material
:The type
of cord and number of plies in the
sidewall and under the tread. (6) Uniform Tire Quality
Grading (UTQG)
:Tire
manufacturers are required to
grade tires based on three
performance factors: treadwear,
traction, and temperature
resistance. For more information
see Uniform Tire Quality Grading
0 317.
(7) Maximum Cold Inf lation
Load Limit
:Maximum load that
can be carried and the maximum
pressure needed to support
that load.
Tire Designations
Tire Size
The following is an example of a
typical passenger vehicle tire size.
(1) Passenger (P-Metric) Tire:
The United States version of a
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
vehicle tire engineered to
standards set by the U.S. Tire and
Rim Association.
(2) Tire Width
:The three-digit
number indicates the tire section
width in millimeters from sidewall
to sidewall.
(3) Aspect Ratio
:A two-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size aspect
ratio is 60, as shown in item 3 of
the illustration, it would mean
that the tire's sidewall is
60 percent as high as it is wide.
(4) Construction Code
:A letter
code is used to indicate the type
of ply construction in the tire. The
letter R means radial ply
construction; the letter D means