tire size HUMMER H2 2008 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 your
vehicle’s wheels.
{CAUTION:
If you use bias-ply tires on your 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 your 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 equipped with a tire pressure monitoring
system may 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.
Your vehicle’s original equipment tires are listed
on the Tire and Loading Information Label.
SeeLoading Your Vehicle on page 4-44, for more
information about the Tire and Loading Information
Label and its location on your vehicle.
5-71

Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this could
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 anti-lock brakes, rollover
airbags, 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 5-70andAccessories
and Modifications on page 5-3for additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
5-72

Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance, and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-78for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your 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
Notice:Use tire chains only where legal and only
when you must. Use only SAE Class U-type
chains that are the proper size for your tires. Install
them on the rear axle 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

8. Place the narrow end of the tool bag under the
seat rails as shown and slide the tool bag under
the rear seat.
Be careful not to pinch the seat cables or electrical
harnesses.
9. Reinstall the strap to the seat rail for the tool bag.
Wrap the strap around the seat rail and then
secure it to the tool bag.
10. Return the seat to the correct position. SeeSplit
Folding Rear Seat on page 1-8for more information.
Spare Tire
Your vehicle, when new, had a fully-inated spare tire.
A spare tire may lose air over time, so check its
ination pressure regularly. SeeInflation - Tire Pressure
on page 5-61andLoading Your Vehicle on page 4-44
for information regarding proper tire ination and loading
your vehicle. For instruction on how to remove, install
or store a spare tire, seeRemoving the Flat Tire
and Installing the Spare Tire on page 5-88andStoring
a Flat or Spare Tire and Tools (SUT) on page 5-94
orStoring a Flat or Spare Tire and Tools (SUV)
on page 5-96.
After installing the spare tire on your vehicle, you should
stop as soon as possible and make sure the spare is
correctly inated. The spare tire is made to perform well
at speeds up to 70 mph (112 km/h) at the recommended
ination pressure, so you can nish your trip.
Have the damaged or at road tire repaired or replaced
as soon as you can and installed back onto your
vehicle. This way, a spare tire will be available in case
you need it again. Do not mix tires and wheels of
different sizes, because they will not t. Keep your spare
tire and its wheel together.
5-99

Steering.......................................................... 4-9
Steering Wheel Controls, Audio.......................3-116
Steering Wheel, Tilt Wheel................................. 3-6
Storage Areas
All-Weather Cargo Area................................2-66
Center Console Storage Area........................2-64
Cupholder(s)...............................................2-64
Glove Box..................................................2-64
Luggage Carrier..........................................2-65
Rear Seat Armrest.......................................2-65
Stuck in Sand, Mud, Ice, or Snow.....................4-39
Sun Visors.....................................................2-23
Sunroof.........................................................2-67
T
Tachometer....................................................3-33
Tailgate/Spare Tire Carrier................................2-16
Taillamps
Turn Signal, Stoplamps and Back-up Lamps....5-51
Theft-Deterrent, Radio....................................3-116
Theft-Deterrent Systems...................................2-24
Content Theft-Deterrent................................2-24
PASS-Key
®III+...........................................2-26
PASS-Key®III+ Operation.............................2-26
Third Row Seat..............................................1-10
Tilt Wheel........................................................ 3-6
Time, Setting..................................................3-73Tire
Pressure Light.............................................3-41
Tires.............................................................5-55
Aluminum Wheels, Cleaning........................5-106
Buying New Tires........................................5-70
Chains.......................................................5-75
Changing a Flat Tire....................................5-78
Cleaning...................................................5-106
Different Size..............................................5-72
If a Tire Goes Flat.......................................5-78
Ination - Tire Pressure................................5-61
Inator,- Accessory.......................................5-76
Inspection and Rotation................................5-67
Installing the Spare Tire................................5-88
Pressure Monitor Operation...........................5-64
Pressure Monitor System..............................5-62
Removing the Flat Tire.................................5-88
Removing the Spare Tire and Tools.......5-80, 5-84
Spare Tire..................................................5-99
Storing a Flat or Spare Tire and Tools.....5-94, 5-96
Tire Sidewall Labeling..................................5-56
Tire Terminology and Denitions....................5-58
Uniform Tire Quality Grading.........................5-72
Wheel Alignment and Tire Balance.................5-74
Wheel Replacement.....................................5-74
When It Is Time for New Tires......................5-69
Tool Kit .........................................................4-42
Tow/Haul Mode...............................................2-36
Tow/Haul Mode Light.......................................3-47
12

W
Warning Lights, Gages and Indicators................3-31
Warnings
DIC Warnings and Messages........................3-56
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Wheels
Alignment and Tire Balance..........................5-74
Different Size..............................................5-72
Replacement...............................................5-74
Where to Put the Restraint...............................1-46
Windows.......................................................2-19
Power........................................................2-20Windshield
Backglass, and Wiper Blades, Cleaning........5-105
Washer......................................................3-10
Washer Fluid..............................................5-35
Wiper Blade Replacement.............................5-54
Wiper Fuses.............................................5-110
Wipers......................................................... 3-9
Windshield, Rear Washer/Wiper........................3-11
Winter Driving................................................4-36
X
XM Radio Messages.....................................3-103
XM™ Satellite Radio Antenna System..............3-118
Y
Your Vehicle and the Environment....................... 6-2
14