2007 CADILLAC CTS V Page

High-Speed Operation
{CAUTION:
Driving at high speeds, 100 mph
(160 km/h) or higher, puts an additional
strain on tires. Sustained high-speed
driving causes excessive heat build up
and can cause sudden tire failure. You
could have a crash and you or others
could be killed. Some high-speed rated
tires require ination pressure adjustment
for high speed operation. When speed
limits and road conditions are such that a
vehicle can be driven at high speeds,
make sure the tires are rated for high
speed operation, in excellent condition,
and set to the correct cold tire ination
pressure for the vehicle load.The CTS-V high-performance tires, size
245/45R18 96V and P245/45ZR18 96W require
ination pressure adjustment when driving
your vehicle at speeds of 100 mph (160 km/h) or
higher. Set the cold tire ination pressure to
the maximum ination pressure shown on the tire
sidewall, or 41 psi (282 kPa), whichever is
lower. See the example following.
Example:
You will nd the maximum load and ination
pressure molded on the tire’s sidewall, in small
letters, near the rim ange. It will read something
like this: Maximum load 710 kg (1565 lbs)
350 kPa (51 psi) Max. Press.
For this example, you would set the cold ination
pressure for high-speed driving at 41 psi (282 kPa)
When you end high-speed driving, return the tires
to the cold ination pressures shown on the
tire and loading information label. SeeLoading
Your Vehicle on page 321.
404

The high-performance tires, size P225/55R16,
P225/50R17 or P225/50R18 require ination
pressure adjustment when driving your vehicle at
speeds of 100 mph (160 km/h) or higher. Set
the cold tire ination pressure to the maximum
ination pressure shown on the tire sidewall,
or 38 psi (262 kPa), whichever is lower. See the
example following.
Example:
You will nd the maximum load and ination
pressure molded on the tire’s sidewall, in small
letters, near the rim ange. It will read something
like this: Maximum load 710 kg (1565 lbs)
350 kPa (51 psi) Max. Press.
For this example, you would set the cold ination
pressure for high-speed driving at 38 psi (262 kPa)
When you end high-speed driving, return the tires
to the cold ination pressures shown on the
tire and loading information label. SeeLoading
Your Vehicle on page 321.Tire Pressure Monitor System
Your vehicle may have a Tire Pressure Monitor
System (TPMS). This system uses radio and
sensor technology to check tire pressure levels.
If your vehicle has this feature, sensors are
mounted on each the tire and wheel assembly,
except for the spare tire. The TPMS sensors
monitor the air pressure in the vehicle’s tires and
transmits the tire pressure readings to a receiver
located in the vehicle.
If your vehicle has the base audio system, the
Driver Information Center (DIC) displays TPMS
warnings and messages on the radio’s display
screen. SeeSystem Controls on page 223
andDIC Warnings and Messages on page 232for
additional information and details about the DIC
operation and displays. If your vehicle has
the Navigation system, TPMS warnings and
messages are displayed on the message center
screen, located inside the tachometer. See
Message Center (CTS-V) on page 215for
information about the message center operation
and displays.
405

If a low tire pressure condition is detected, the
TPMS will display the Check Tire Pressure
message on the DIC or message center and, at the
same time, illuminate the low tire pressure warning
symbol on the instrument panel cluster.
Each tire, including the spare (if provided), should
be checked monthly when cold and inated to the
ination pressure recommended by the vehicle
manufacturer on the vehicle placard or tire ination
pressure label. (If your vehicle has tires of a
different size than the size indicated on the vehicle
placard or tire ination pressure label, you should
determine the proper tire ination pressure for
those tires.)
As an added safety
feature, your vehicle has
been equipped with a
tire pressure monitoring
system (TPMS) that
illuminates a low tire
pressure telltale when
one or more of your tires
is signicantly
under-inated.Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires
as soon as possible, and inate them to the
proper pressure. Driving on a signicantly
under-inated tire causes the tire to overheat and
can lead to the tire failure. Under-ination also
reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if under-ination has not reached the level to
trigger illumination of the TPMS low tire pressure
telltale.
The Tire and Loading Information label shows the
size of your vehicle’s original tires and their
recommended cold ination pressures. See
Loading Your Vehicle on page 321, for the location
of the tire and loading information label. Also
seeInation - Tire Pressure on page 402.
The tire pressure warning light may come on in
cool weather when the vehicle is rst started, and
then turn off as you start to drive. This could
be an early indicator that the tire pressures are
getting low and need to be inated to the
proper pressure.
406

Your vehicle’s TPMS can alert you about a low
tire pressure condition but it does not replace
normal tire maintenance. SeeTire Inspection and
Rotation on page 409andTires on page 392.
Notice:Do not use a tire sealant if your vehicle
has Tire Pressure Monitors. The liquid sealant
can damage the tire pressure monitor sensors.
Resetting the TPMS Identication
Codes
Each TPMS sensor has a unique identication
code. Any time you replace one or more of
the TPMS sensors or rotate the tires, the
identication codes will need to be matched to the
new tire and wheel position. The sensors are
matched to the tire and wheel positions in
the following order: driver’s side front tire,
passenger’s side front tire, passenger’s side rear
tire, and driver’s side rear tire using a TPMS
diagnostic tool. See your GM dealer for service.
The TPMS sensors may also be matched to each
tire and wheel position by increasing or
decreasing the tire’s air pressure. When increasing
tire pressure do not exceed the maximum
ination pressure indicated on the tire’s sidewall.You will have two minutes to match the rst tire
and wheel position, and ve minutes overall
to match all four tire and wheel positions. If it takes
longer than two minutes, to match the rst tire
and wheel, or more than ve minutes to match all
four tire and wheel positions the matching
process stops and you will need to start over.
The TPM matching process is outlined below:
1. Set the parking brake.
2. Turn the ignition switch to ON with the
engine off.
3. Using the Remote Keyless Entry (RKE)
transmitter, lock and unlock the vehicle’s
doors.
4. Press the lock and unlock buttons, at the
same time, on the RKE transmitter. A single
horn chirp will sound, indicating that the
TPMS system is ready, and the sensor
matching process can begin.
5. Start with the driver’s side front tire.
407

Federal Communications Commission
(FCC) and Industry and Science Canada
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful
interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation.
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
1. This device may not cause interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
Changes or modications to this system by other
than an authorized service facility could void
authorization to use this equipment.
Tire Inspection and Rotation
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km).
If your vehicle has P245/45ZR18 96W size tires,
GM recommends rotating these tires at 3,000 mile
(4 800 km) intervals. These tires are optimized for
dry traction and handling performance. Tread life
may be 15,000 miles (24 140 km) or less for these
tires, depending on how and where you drive.
Any time you notice unusual wear, rotate your
vehicle’s 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 411andWheel Replacement on page 416for
more information.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The
rst rotation is the most important. SeeScheduled
Maintenance on page 462.
409

When rotating your vehicle’s tires, always use the
correct rotation pattern shown here.
If your vehicle has a compact spare tire, do not
include it in the tire rotation.
After the tires have been rotated, adjust the front
and rear ination pressures as shown on the Tire
and Loading Information label. SeeLoading Your
Vehicle on page 321, for an example of the tire and
loading information label and its location on your
vehicle.
If your vehicle has the Tire Pressure Monitor
System (TPMS) the TPMS sensors will need to be
reset and matched to the tire/wheel position. A
special TPMS diagnostic tool is used to reset the
sensor identication codes. See your dealer for
service.Make certain that all wheel nuts are properly
tightened. See “Wheel Nut Torque” under
Capacities and Specications on page 457.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after time. The wheel could
come off and cause an accident. 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 needed, to get all the rust or dirt
off. SeeChanging a Flat Tire (CTS Only)
on page 424.
410

When It Is Time for New Tires
One way to tell when it
is time for new tires is
to check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining.
You need a new tire if any of the following
statements are true:
You can see the indicators at three or more
places around the tire.
You can see cord or fabric showing through the
tire’s rubber.
The tread or sidewall is cracked, cut, or
snagged deep enough to show cord or fabric.
The tire has a bump, bulge, or split.
The tire has a puncture, cut, or other damage
that cannot be repaired well because of the size
or location of the damage.
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 by the tire manufacturer. If the tires have
an all-season tread design, the TPC Spec number
will be followed by a MS for mud and snow. See
Tire Sidewall Labeling on page 394for additional
information.
The 18-inch performance tires, size
245/45R18 96V, used on some vehicles,
meet the General Motors Tire Performance
Criteria Specication (TPC Spec) rating but the
411

TPC Spec code has not been molded onto the
tire’s sidewall. If your vehicle has these tires, and
you need to replace them, you can still get
these TPC Spec rated tires by asking your
GM dealer. Your GM dealer can order these tires
by part number. This way, your vehicle will
continue to give the proper endurance, handling,
traction, and ride as the original tires.
Winter tires with the same speed rating as your
vehicle’s original equipment tires may not be
available for H, V, W, 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 of your vehicle while driving. If
you mix tires of different sizes, 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, brands, or types may also
cause damage to your vehicle. Be sure to
use the correct size, brand, and type of
tires on all wheels.
Your vehicle may have a compact spare
tire and wheel assembly. It is all right to
drive with your vehicle’s compact spare
tire temporarily. It was developed for use
on your vehicle. SeeCompact Spare Tire
(CTS Only) on page 434.
412