wheel size CADILLAC XLR 2009 1.G Owners Manual

When It Is Time for New Tires.......................6-61
Buying New Tires.........................................6-62
Different Size Tires and Wheels......................6-63
Uniform Tire Quality Grading..........................6-64
Wheel Alignment and Tire Balance..................6-65
Wheel Replacement......................................6-66
Tire Chains..................................................6-68
Lifting the Vehicle.........................................6-68
If a Tire Goes Flat........................................6-72
Appearance Care............................................6-74
Interior Cleaning...........................................6-74
Fabric/Carpet...............................................6-75
Leather.......................................................6-75
Instrument Panel, Vinyl, and Other Plastic
Surfaces..................................................6-76
Wood Panels...............................................6-76
Speaker Covers............................................6-76
Care of Safety Belts......................................6-76
Weatherstrips...............................................6-77
Washing Your Vehicle...................................6-77
Cleaning Exterior Lamps/Lenses.....................6-77
Finish Care..................................................6-78Windshield and Wiper Blades.........................6-78
Aluminum or Chrome-Plated Wheels
and Trim..................................................6-79
Tires...........................................................6-80
Sheet Metal Damage.....................................6-80
Finish Damage.............................................6-80
Underbody Maintenance................................6-80
Fiberglass Springs (Composite Springs)...........6-81
Chemical Paint Spotting.................................6-81
Vehicle Identication......................................6-81
Vehicle Identication Number (VIN).................6-81
Service Parts Identication Label.....................6-82
Electrical System............................................6-82
Add-On Electrical Equipment..........................6-82
Windshield Wiper Fuses................................6-83
Power Windows and Other Power Options.......6-83
Fuses and Circuit Breakers............................6-83
Instrument Panel Fuse Block..........................6-83
Underhood Fuse Block..................................6-87
Capacities and Specications..........................6-90
Section 6 Service and Appearance Care
6-2

Low-Prole Tires (XLR-V)
If your vehicle has P235/45R19 or P255/40R19
size tires, they are classied as low-prole tires.
These tires are designed for very responsive driving
on wet or dry pavement. You may also notice more
road noise with low-prole performance tires and
that they tend to wear faster.
Notice:If the vehicle has low-prole tires,
they are more susceptible to damage from road
hazards or curb impact than standard prole
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 ination
pressure and, when possible avoid contact
with curbs, potholes, and other road hazards.
Winter Tires (XLR-V)
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, seeBuying
New Tires on page 6-62.
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, Y,
and ZR speed rated tires. If you choose winter tires with
a lower speed rating, never exceed the tire’s maximum
speed capability.
6-47

(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 seeUniform Tire Quality Grading on
page 6-64.
(G) Maximum Cold Ination Load Limit
:Maximum load that can be carried and the
maximum pressure needed to support that load.
Tire Size
The following illustration shows an example of a
typical passenger (p-metric) vehicle tire size.
(A) Passenger (P-Metric) Tire
:The United States
version of a metric tire sizing system. The letter P
as the rst character in the tire size means a
passenger vehicle tire engineered to standards set
by the U. S. Tire and Rim Association.(B) Tire Width
:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) 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 C of the illustration, it would mean
that the tire’s sidewall is 60 percent as high as
it is wide.
(D) 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 diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter
:Diameter of the wheel in
inches.
(F) Service Description
:These characters
represent the load range and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The load index
can range from 1 to 279. The speed rating is the
maximum speed a tire is certied to carry a load.
Speed ratings range from A to Z.
6-49

Tire Inspection and Rotation
We recommend that you regularly inspect your
vehicle’s tires for signs of wear or damage.
SeeWhen It Is Time for New Tires on page 6-61
for additional information.
If your vehicle has P235/50R18 size tires they
should be rotated any time you notice unusual
wear. Rotate the tires as soon as possible and
check wheel alignment. Also check for damaged
tires or wheels. SeeWhen It Is Time for New Tires
on page 6-61andWheel Replacement on
page 6-66.
When rotating P235/50R18 size tires, always use
the correct rotation pattern shown here.After the tires have been rotated, adjust the front
and rear ination pressures as shown on the Tire
and Loading Information label, seeInflation - Tire
Pressure on page 6-54andLoading the Vehicle on
page 5-21. Vehicles that have the Tire Pressure
Monitor System (TPMS) need the TPMS sensors
reset after a tire rotation is performed. A special tool
is needed to reset the sensor identication codes.
See your dealer/retailer for service. Make certain
that all wheel nuts are properly tightened. See
Wheel Replacement on page 6-66and “Wheel Nut
Torque” underCapacities and Specifications on
page 6-90
.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause a crash. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the
vehicle. In an emergency, you can use a
cloth or a paper towel to do this; but be sure
to use a scraper or wire brush later, if you
need to, to get all the rust or dirt off.
6-60

Buying New Tires
GM has developed and matched specic tires for your
vehicle. The original equipment tires installed on your
vehicle, when it was new, were designed to meet
General Motors Tire Performance Criteria Specication
(TPC Spec) system rating. If you need replacement tires,
GM strongly recommends that you get tires with the
same TPC Spec rating. This way, your vehicle will
continue to have tires that are designed to give the same
performance and vehicle safety, during normal use, as
the original tires.
GM’s exclusive TPC Spec system considers over a
dozen critical specications that impact the overall
performance of your vehicle, including brake system
performance, ride and handling, traction control, and tire
pressure monitoring performance. GM’s TPC Spec
number is molded onto the tire’s sidewall near the tire
size. If the tires have an all-season tread design,
the TPC Spec number will be followed by an MS for
mud and snow. SeeTire Sidewall Labeling on
page 6-48, for additional information.
GM recommends replacing tires in sets of four. This is
because uniform tread depth on all tires will help
keep your vehicle performing most like it did when thetires were new. Replacing less than a full set of tires
can affect the braking and handling performance of your
vehicle. SeeTire Inspection and Rotation on page 6-60.
Winter tires with the same speed rating as your
original equipment tires may not be available for H, V,
W, Y and ZR speed rated tires. If you choose snow tires
with a lower speed rating, never exceed the tire’s
maximum speed capability.
{CAUTION:
Mixing tires could cause you to lose control while
driving. If you mix tires of different sizes (other
than those originally installed on your vehicle),
brands, or types (radial and bias-belted tires), the
vehicle may not handle properly, and you could
have a crash. Using tires of different sizes (other
than those originally installed on your vehicle),
brands or types, may also cause damage to your
vehicle. Be sure to use the correct size, brand,
and type tires on all four wheels.
6-62

{CAUTION:
If you use bias-ply tires on the vehicle, the
wheel rim anges could develop cracks after
many miles of driving. A tire and/or wheel
could fail suddenly, causing a crash. Use only
radial-ply tires with the wheels on the vehicle.
If you must replace your vehicle’s tires with those that do
not have a TPC Spec number, make sure they are the
same size, load range, speed rating, and construction
type (radial and bias-belted tires) as your vehicle’s
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 on it. Non-TPC
Spec rated tires may give a low-pressure warning that is
higher or lower than the proper warning level you
would get with TPC Spec rated tires. SeeTire Pressure
Monitor System on page 6-55.
Your vehicle’s original equipment tires are listed on the
Tire and Loading Information label. SeeLoading the
Vehicle on page 5-21, for more information about
the Tire and Loading Information label and its location
on your vehicle.
Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability, and
resistance to rollover. Additionally, if your vehicle
has electronic systems such as, antilock brakes, traction
control, and electronic stability control, the performance
of these systems can be affected.
{CAUTION:
If you add different sized wheels, your vehicle may
not provide an acceptable level of performance and
safety if tires not recommended for those wheels
are selected. You may increase the chance that you
will crash and suffer serious injury. Only use GM
specic wheel and tire systems developed for your
vehicle, and have them properly installed by a GM
certied technician.
SeeBuying New Tires on page 6-62andAccessories
and Modifications on page 6-3for additional information.
6-63

Tire Chains
{CAUTION:
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 you to
lose control of the vehicle and you or others may be
injured in a crash. Use another type of traction
device only if its manufacturer recommends it for
use on the vehicle and tire size combination and
road conditions. Follow that manufacturer’s
instructions. To help avoid damage to the vehicle,
drive slowly, re-adjust or remove the device if it is
contacting the vehicle, and do not spin the wheels.
If you do nd traction devices that will t, install
them on the rear tires.
Lifting the Vehicle
{CAUTION:
Lifting a vehicle can cause an injury. The vehicle
can slip off the jack and roll over you or others.
You and they could be badly injured. Find a level
place to lift the vehicle. To help prevent the
vehicle from moving:
1. Firmly set the parking brake.
2. Put an automatic transmission shift lever in
P (Park).
3. Turn the engine off.
4. Put blocks in front of and behind the wheels.
{CAUTION:
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under a
vehicle when it is supported only by a jack.
6-68

StabiliTrak®/TCS Warning Light.........................3-48
Starting the Engine.........................................2-26
Steering........................................................5-10
Steering Wheel Controls, Audio.........................3-88
Steering Wheel Controls, Memory....................... 1-3
Steering Wheel, Heated..................................... 3-7
Steering Wheel, Power Tilt Wheel and
Telescopic Steering Column............................ 3-6
Storage Areas
Center Console Storage Area........................2-53
Convenience Net.........................................2-54
Cupholders.................................................2-53
Glove Box..................................................2-53
Rear Storage Area.......................................2-54
Stuck in Sand, Mud, Ice, or Snow.....................5-20
Sun Visors.....................................................2-20
Symbols........................................................4-43
System Needs Service, If.................................4-51
System Overview
Overview, Navigation System.......................... 4-2
T
Tachometer....................................................3-43
Telescopic Steering Column, Power Tilt Wheel...... 3-6
Theft - Deterrent System..................................2-20
Theft-Deterrent, Radio.....................................3-88Theft-Deterrent Systems...................................2-20
Immobilizer.................................................2-22
Immobilizer Operation...................................2-23
Tire
Pressure Light.............................................3-50
Tires.............................................................6-46
Aluminum or Chrome-Plated Wheels,
Cleaning.................................................6-79
Buying New Tires........................................6-62
Chains.......................................................6-68
Cleaning....................................................6-80
Different Size..............................................6-63
If a Tire Goes Flat.......................................6-72
Ination - Tire Pressure................................6-54
Inspection and Rotation................................6-60
Lifting the Vehicle........................................6-68
Pressure Monitor Operation...........................6-57
Pressure Monitor System..............................6-55
Run-Flat.....................................................6-52
Tire Sidewall Labeling..................................6-48
Tire Terminology and Denitions....................6-50
Uniform Tire Quality Grading.........................6-64
Wheel Alignment and Tire Balance.................6-65
Wheel Replacement.....................................6-66
When It Is Time for New Tires......................6-61
Winter Tires................................................6-47
12

Washer, Headlamps........................................3-11
Waypoint, Edit................................................4-23
Wheels
Alignment and Tire Balance..........................6-65
Different Size..............................................6-63
Replacement...............................................6-66
Windows.......................................................2-17
Power ........................................................2-18
Windshield
Rainsense™ Wipers...................................... 3-9
Replacement...............................................6-45
Washer......................................................3-10
Washer Fluid..............................................6-31
Wiper Blade Replacement.............................6-45Windshield (cont.)
Wiper Blades, Cleaning................................6-78
Wiper Fuses...............................................6-83
Wipers......................................................... 3-8
Winter Driving................................................5-18
Winter Tires...................................................6-47
Wiper Activated Headlamps..............................3-27
X
XM™ Satellite Radio Antenna System................3-91
Y
Your Vehicle and the Environment....................... 7-2
14