tire size BUICK LACROSSE 2009 User Guide

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 the tires 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 5-67for information on
proper tire rotation.
{CAUTION:
Mixing tires could cause you to lose control
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. It is all right to drive with your compact
spare temporarily, as it was developed for use
on your vehicle. SeeCompact Spare Tire on
page 5-89.
{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 your vehicle. 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 5-62.
5-70

Your vehicle’s original equipment tires are listed
on the Tire and Loading Information Label.
SeeLoading the Vehicle on page 4-20, 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 5-69andAccessories
and Modifications on page 5-3for additional information.
5-71

Used Replacement Wheels
{CAUTION:
Putting a used wheel on the vehicle is dangerous.
You cannot know how it has been used or how
far it has been driven. It could fail suddenly and
cause a crash. If you have to replace a wheel,
use a new GM original equipment wheel.
Tire Chains
{CAUTION:
If your vehicle has P225/55R17 or P235/50R18
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
CAUTION: (Continued)
CAUTION: (Continued)
area damaged by the tire chains could cause you
to lose control of your 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 your
vehicle and tire size combination and road
conditions. Follow that manufacturer’s instructions.
To help avoid damage to your vehicle, drive slowly,
readjust or remove the device if it is contacting your
vehicle, and do not spin your wheels.
If you do nd traction devices that will t, install
them on the front tires.
Notice:If your vehicle has a tire size other than
P225/55R17 or P235/50R18 size tires, use tire chains
only where legal and only when you must. Use only
SAE Class “S” type chains that are the proper size for
your tires. Install them on the front tires and tighten
them as tightly as possible with the ends securely
fastened. Drive slowly and follow the chain
manufacturer’s instructions. If you can hear the
chains contacting your 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 your vehicle.
5-75

Storing a Flat or Spare Tire and
Tools (Base Model)
{CAUTION:
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.
After the compact spare tire has been installed on the
vehicle, store the at tire in the trunk.
When storing a full-size tire, use the extension with
the extension protector, located in the foam holder,
to help avoid wheel surface damage.To store a full-size tire:
1. Install the tools in their original location in the trunk
area and secure.
2. Place the tire valve stem facing down and the
protector/guide placed through a wheel bolt hole.
3. Remove the protector and attach the retainer
securely.
4. Store the cover as far forward as possible.
When storing a compact spare tire in the trunk, put the
protector back in the foam holder.
The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon as you
can. SeeCompact Spare Tire on page 5-89. Use this as
a guide for storing the compact spare tire and tools.
5-84

A. Retainer
B. Full-Size Flat Tire
C. Protective Guide
D. Extension Bolt Screw
E. Wing Nut
F. Jack
G. Wheel Wrench
H. Foam Holder
I. Bolt Screw
Full-Size Flat Tire
5-86

Storing a Flat or Spare Tire and
Tools (Super Only)
{CAUTION:
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.
After the compact spare tire has been installed on the
vehicle, store the at tire in the trunk.
When storing a full-size tire, use the extension with the
protector, located in the foam holder, to help avoid
wheel surface damage.
To store a full-size tire:
1. Install the tools in their original location in the trunk
area and secure.
2. Place the tire valve stem facing down and the
protector/guide placed through a wheel bolt hole.3. Remove the protector and attach the retainer
securely.
4. Store the cover as far forward as possible.
When storing a compact spare tire in the trunk, put
the protector back in the foam holder. When storing
the compact spare tire, the tire must be stored valve
stem down.
The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon as you
can. SeeCompact Spare Tire on page 5-89. Use this as
a guide for storing the compact spare tire and tools.
Compact Spare Tire
5-87

A. Retainer
B. Full-Size Flat Tire
C. Protective Guide
D. Extension Bolt Screw
E. Wing Nut
F. Jack
G. Wheel Wrench
H. Foam Holder
I. Bolt Screw
Full-Size Flat Tire
5-88

Compact Spare Tire
Although the compact spare tire was fully inated
when the vehicle was new, it can lose air after a time.
Check the ination pressure regularly. It should be
60 psi (420 kPa).
After installing the compact spare on the vehicle,
stop as soon as possible and make sure the spare
tire is correctly inated. The compact spare is made
to perform well at speeds up to 65 mph (105 km/h)
for distances up to 3,000 miles (5 000 km), so you
can nish your trip and have the full-size tire repaired
or replaced at your convenience. Of course, it is best
to replace the spare with a full-size tire as soon as
possible. The spare tire will last longer and be in good
shape in case it is needed again.Notice: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.
And do not mix the compact spare tire or wheel with
other wheels or tires. They will not t. Keep the spare tire
and its wheel together.
Notice:Tire chains will not t the compact spare.
Using them can damage the vehicle and can damage
the chains too. Do not use tire chains on the
compact spare.
5-89

Setting the Clock............................................3-82
Sheet Metal Damage.......................................5-97
Shifting Into Park............................................2-29
Shifting Out of Park........................................2-32
Signals, Turn and Lane-Change.......................... 3-8
Spare Tire
Compact....................................................5-89
Installing....................................................5-79
Removing...................................................5-78
Storing...............................................5-84, 5-87
Specications, Capacities...............................5-106
Speedometer..................................................3-32
Split Folding Rear Seat..................................... 1-7
StabiliTrak
®System.......................................... 4-6
Start Vehicle, Remote....................................... 2-7
Starting the Engine.........................................2-23
Steering........................................................4-10
Steering Wheel Controls, Audio.......................3-110
Steering Wheel, Tilt Wheel................................. 3-6
Storage Areas
Center Console Storage Area........................2-47
Convenience Net.........................................2-48
Cupholders.................................................2-47
Glove Box..................................................2-47
Stuck in Sand, Mud, Ice, or Snow.....................4-19
Sun Visors.....................................................2-16
Sunroof.........................................................2-48
T
Tachometer....................................................3-32
Taillamps
Turn Signal, Sidemarker, Stoplamps, and
Back-Up Lamps.......................................5-50
TCS Warning Light..........................................3-37
Theater Dimming............................................3-17
Theft-Deterrent, Radio....................................3-110
Theft-Deterrent Systems...................................2-16
Content Theft-Deterrent................................2-17
PASS-Key
®III+ Electronic Immobilizer............2-18
PASS-Key®III Electronic Immobilizer
Operation................................................2-19
Tilt Wheel........................................................ 3-6
Time, Setting..................................................3-82
Tire
Pressure Light.............................................3-39
Tires.............................................................5-54
Aluminum or Chrome-Plated Wheels,
Cleaning.................................................5-96
Buying New Tires........................................5-69
Chains.......................................................5-75
Changing a Flat Tire....................................5-76
Cleaning....................................................5-97
Compact Spare Tire.....................................5-89
Different Size..............................................5-71
12

Vehicle Personalization
DIC ...........................................................3-74
Vehicle, Remote Start....................................... 2-7
Ventilation Adjustment......................................3-28
Visors...........................................................2-16
W
Warning Lights, Gages, and Indicators...............3-30
Warnings
DIC Warnings and Messages........................3-56
Hazard Warning Flashers............................... 3-6
Safety and Symbols......................................... iii
Washer Fluid, Low Warning Light......................3-45
Wheels
Alignment and Tire Balance..........................5-74
Different Size..............................................5-71
Replacement...............................................5-74
Where to Put the Restraint...............................1-40
Windows.......................................................2-14
Power ........................................................2-15Windshield
Replacement...............................................5-53
Washer........................................................ 3-9
Washer Fluid..............................................5-35
Wiper Blade Replacement.............................5-53
Wiper Blades, Cleaning................................5-95
Wiper Fuses...............................................5-99
Wipers......................................................... 3-9
Winter Driving................................................4-17
X
XM Radio Messages.......................................3-98
XM™ Satellite Radio Antenna System..............3-113
Y
Your Vehicle and the Environment....................... 6-2
14