2011 CADILLAC CTS tire size

Black plate (23,1)Cadillac CTS/CTS-V Owner Manual - 2011
In Brief 1-23
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible.
.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, if equipped.
.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. or Canada:1-800-882-1112
TTY Users: 1-888-889-2438
As the owner of a new Cadillac, you
are automatically enrolled in the
Roadside Service program which is
available 24 hours a day, 365 days
a year. Roadside Service and OnStar
If you have a current OnStar
subscription, press the OnStar
button and the current GPS location
will be sent to an OnStar Advisor
who will assess your problem,
contact Roadside Service, and relay
exact location to get you the help
you need.
Online Owner Center
The Online Owner Center is a
complimentary service that includes
online service reminders, vehicle
maintenance tips, online owner
manual, special privileges
and more.
Sign up today at:
www.gmownercenter.com/cadillac
(U.S.) or
www.gm.ca (Canada).

Black plate (43,1)Cadillac CTS/CTS-V Owner Manual - 2011
Seats and Restraints 3-43
passenger airbag(s). See
Passenger Sensing Systemon
page 3‑37.
If you have questions, call
Customer Assistance. The
phone numbers and addresses
for Customer Assistance are in
Step Two of the Customer
Satisfaction Procedure in this
manual. See Customer
Satisfaction Procedure
on
page 13‑1.
If the vehicle has rollover
roof-rail airbags, see Different
Size Tires and Wheels
on
page 10‑85for additional
important information. Q: Because I have a disability,
I have to get my vehicle
modified. How can I find out
whether this will affect my
airbag system?
A: If you have questions, call
Customer Assistance. The
phone numbers and addresses
for Customer Assistance are in
Step Two of the Customer
Satisfaction Procedure in this
manual. See Customer
Satisfaction Procedure
on
page 13‑1.
In addition, your dealer and the
service manual have information
about the location of the airbag
sensors, sensing and diagnostic
module and airbag wiring.
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
on
page 5‑17for more information.
Notice: If an airbag covering is
damaged, opened, or broken, the
airbag may not work properly. Do
not open or break the airbag
coverings. If there are any
opened or broken airbag covers,
have the airbag covering and/or
airbag module replaced. For the
location of the airbag modules,
see What Makes an Airbag
Inflate?
on page 3‑35. See your
dealer for service.

Black plate (12,1)Cadillac CTS/CTS-V Owner Manual - 2011
9-12 Driving and Operating
Two labels on the vehicle show
how much weight it may
properly carry, the Tire and
Loading Information label and
the Certification label.
{WARNING
Do not load the vehicle any
heavier than the Gross
Vehicle Weight Rating
(GVWR), or either the
maximum front or rear Gross
Axle Weight Rating (GAWR).
If you do, parts on the vehicle
can break, and it can change
the way the vehicle handles.
These could cause you to lose
control and crash. Also,
overloading can shorten the
life of the vehicle. Tire and Loading Information
Label
Label Example
A vehicle specific Tire and
Loading Information label is
attached to the vehicle's center
pillar (B-pillar). With the driver's
door open, you will find the label
attached near the door lock
post. The Tire and Loading
Information label shows the
number of occupant seating positions (A), and the maximum
vehicle capacity weight (B) in
kilograms and pounds.
The Tire and Loading
Information label also shows the
tire size of the original
equipment tires (C) and the
recommended cold tire inflation
pressures (D). For more
information on tires and inflation
see
Tires
on page 10‑66and Tire
Pressure
on page 10‑74.
There is also important loading
information on the Certification
label. It tells you 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.

Black plate (32,1)Cadillac CTS/CTS-V Owner Manual - 2011
9-32 Driving and Operating
Drive Systems
All-Wheel Drive
Vehicles with this feature always
send engine power to all four
wheels. It is fully automatic, and
adjusts itself as needed for road
conditions.
When using a compact spare tire on
an AWD vehicle, the system
automatically detects the compact
spare and disables AWD. To restore
AWD operation and prevent
excessive wear on the system,
replace the compact spare with a
full-size tire as soon as possible.
SeeCompact Spare Tire
on
page 10‑111for more information.
Brakes
Antilock Brake
System (ABS)
This vehicle has the Antilock Brake
System (ABS), an advanced
electronic braking system that helps
prevent a braking skid.
When the engine is started and the
vehicle begins to drive away, ABS
checks itself. A momentary motor or
clicking noise might be heard while
this test is going on, and it might
even be noticed that the brake
pedal moves a little. This is normal.
If there is a problem with ABS, this
warning light stays on. See Antilock
Brake System (ABS) Warning Light
on page 5‑23. If driving safely on a wet road and it
becomes necessary to slam on the
brakes and continue braking to
avoid a sudden obstacle, a
computer senses that the wheels
are slowing down. If one of the
wheels is about to stop rolling, the
computer will separately work the
brakes at each wheel.
ABS can change the brake pressure
to each wheel, as required, faster
than any driver could. This can help
the driver steer around the obstacle
while braking hard.
As the brakes are applied, the
computer keeps receiving updates
on wheel speed and controls
braking pressure accordingly.

Black plate (2,1)Cadillac CTS/CTS-V Owner Manual - 2011
10-2 Vehicle Care
Rear Compartment FuseBlock (CTS Coupe and
Sedan) . . . . . . . . . . . . . . . . . . . . 10-58
Rear Compartment Fuse Block (CTS-V Coupe and
Sedan) . . . . . . . . . . . . . . . . . . . . 10-60
Rear Compartment Fuse Block (CTS Wagon) . . . . . . . 10-62
Rear Compartment Fuse Block (CTS-V Wagon) . . . . . 10-64
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-66
Winter Tires . . . . . . . . . . . . . . . . 10-67
Low-Profile Tires . . . . . . . . . . . 10-67
Tire Sidewall Labeling . . . . . . 10-68
Tire Designations . . . . . . . . . . . 10-70
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . 10-71
Tire Pressure . . . . . . . . . . . . . . . 10-74
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . 10-75
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . 10-76
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . 10-77
Tire Inspection . . . . . . . . . . . . . . 10-80
Tire Rotation . . . . . . . . . . . . . . . 10-81 When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . 10-82
Buying New Tires . . . . . . . . . . . 10-83
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . 10-85
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . 10-85
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . 10-87
Wheel Replacement . . . . . . . . 10-88
Tire Chains . . . . . . . . . . . . . . . . . 10-89
If a Tire Goes Flat . . . . . . . . . . 10-90
Tire Sealant and Compressor Kit . . . . . . . . . . . 10-92
Storing the Tire Sealant and Compressor Kit
(Wagon) . . . . . . . . . . . . . . . . . 10-101
Storing the Tire Sealant and Compressor Kit
(Coupe) . . . . . . . . . . . . . . . . . . 10-101
Storing the Tire Sealant and Compressor Kit
(Sedan) . . . . . . . . . . . . . . . . . . 10-102
Tire Changing . . . . . . . . . . . . . 10-102
Compact Spare Tire . . . . . . . 10-111
Jump Starting
Jump Starting . . . . . . . . . . . . . 10-112
Towing
Towing the Vehicle . . . . . . . . 10-117
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . 10-117
Appearance Care
Exterior Care . . . . . . . . . . . . . . 10-120
Interior Care . . . . . . . . . . . . . . . 10-124
Floor Mats . . . . . . . . . . . . . . . . 10-127

Black plate (67,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-67
Winter Tires
If you expect to drive on snow or ice
covered roads often, you may want
to get winter tires for your vehicle.
All season tires provide good overall
performance on most surfaces but
they may not offer the traction you
would like or the same level of
performance as winter tires on snow
or ice covered roads.
Winter tires, in general, are
designed for increased traction on
snow and ice covered roads. With
winter tires, there may be decreased
dry road traction, increased road
noise, and shorter tread life. After
switching to winter tires, be alert for
changes in vehicle handling and
braking.
See your dealer for details
regarding winter tire availability and
proper tire selection. Also, see
Buying New Tires on page 10‑83.If you choose to use 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 your original equipment
tires may not be available for H, V,
W, and ZR speed rated tires. If you
choose winter tires with a lower
speed rating, never exceed the tire's
maximum speed capability.
Low-Profile Tires
If your vehicle has P235/50R18,
245/45ZR19, P245/45R19, 255/
40ZR19 or 285/35ZR19 size
tires, they are classified as
low‐profile tires. These tires are
designed for very responsive
driving on wet or dry pavement.
You may also notice more road noise with low‐profile
performance tires and that they
tend to wear faster.
Notice:If the vehicle has
low‐profile tires, they 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 vehicle 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.

Black plate (68,1)Cadillac CTS/CTS-V Owner Manual - 2011
10-68 Vehicle Care
Summer Performance Tires
Many General Motors high
performance models come
factory‐equipped with tires that
are optimized for maximum dry
and wet road performance while
still retaining satisfactory tread
life, excellent durability, and low
noise levels. In severe winter
climates where snowfall may be
significant, these tires may be
found to provide less traction.
Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The
examples below show a typical
passenger vehicle tire and a
compact spare tire sidewall.
Passenger (P‐Metric) Tire Example
(A) 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.
(B) 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.
(C) 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.
(D) Tire Identification Number
(TIN)
:The letters and numbers
following the DOT (Department
of Transportation) code is 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.

Black plate (69,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-69
(E) Tire Ply Material:The type
of cord and number of plies in
the sidewall and under the tread.
(F) 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
on page 10‑85.
(G) Maximum Cold Inflation
Load Limit
:Maximum load that
can be carried and the
maximum pressure needed to
support that load.
Compact Spare Tire Example
(A) Tire Ply Material:The type
of cord and number of plies in
the sidewall and under the tread.
(B) Temporary Use Only
:The
compact spare tire or temporary
use tire has a tread life of
approximately 5 000 km
(3,000 miles) and should not be
driven at speeds over 105 km/h
(65 mph). The compact spare
tire is for emergency use when a
regular road tire has lost air and
gone flat. If your vehicle has a compact spare tire, see
Compact Spare Tire
on
page 10‑111
and If a Tire Goes
Flat
on page 10‑90.
(C) Tire Identification Number
(TIN)
:The letters and numbers
following the DOT (Department
of Transportation) code is 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.
(D) Maximum Cold Inflation
Load Limit
:Maximum load that
can be carried and the
maximum pressure needed to
support that load.