winter tires CHEVROLET HHR 2009 1.G Owners Manual

Winter Driving
Driving on Snow or Ice
Drive carefully when there is snow or ice between the
tires and the road, creating less traction or grip. Wet ice
can occur at about 32°F (0°C) when freezing rain begins
to fall, resulting in even less traction. Avoid driving on wet
ice or in freezing rain until roads can be treated with salt
or sand.
Drive with caution, whatever the condition. Accelerate
gently so traction is not lost. Accelerating too quickly
causes the wheels to spin and makes the surface under
the tires slick, so there is even less traction.
Try not to break the fragile traction. If you accelerate too
fast, the drive wheels will spin and polish the surface
under the tires even more.
If the vehicle has theTraction Control System (TCS) on
page 4-10orEnhanced Traction System (ETS) on
page 4-12, it improves the ability to accelerate on slippery
roads, but slow down and adjust your driving to the road
conditions. When driving through deep snow, turn off the
traction system to help maintain vehicle motion at lower
speeds.TheAntilock Brake System (ABS) on page 4-5improves
vehicle stability during hard stops on a slippery roads, but
apply the brakes sooner than when on dry pavement.
Allow greater following distance on any slippery road
and watch for slippery spots. Icy patches can occur on
otherwise clear roads in shaded areas. The surface
of a curve or an overpass can remain icy when the
surrounding roads are clear. Avoid sudden steering
maneuvers and braking while on ice.
Turn off cruise control, if equipped, on slippery surfaces.
Blizzard Conditions
Being stuck in snow can be in a serious situation. Stay
with the vehicle unless there is help nearby. If possible,
use theRoadside Assistance Program on page 7-7.
To get help and keep everyone in the vehicle safe:
Turn on theHazard Warning Flashers on page 3-6.
Tie a red cloth to an outside mirror.
4-22

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.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specied
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured under
controlled conditions on specied government test
surfaces of asphalt and concrete. A tire marked C
may have poor traction performance.
5-72

Bulb Replacement...........................................5-51
Center High-Mounted Stoplamp (CHMSL)........5-49
Fog Lamp ..................................................3-16
Halogen Bulbs............................................5-47
Headlamp Aiming........................................5-44
Headlamps.................................................5-47
Headlamps, Front Turn Signal,
and Parking Lamps..................................5-47
License Plate Lamps....................................5-51
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-50
Buying New Tires...........................................5-70
C
Calibration.....................................................2-39
California
Perchlorate Materials Requirements................. 5-4
California Fuel.................................................. 5-6
California Proposition 65 Warning....................... 5-4
Camera, Rear Vision.......................................2-44
Canadian Owners................................................ ii
Capacities and Specications..........................5-114
Carbon Monoxide
Engine Exhaust...........................................2-37
Liftgate......................................................2-12
Winter Driving.............................................4-22Care of
Safety Belts..............................................5-102
Cargo, Rear Side Door....................................2-12
CD, MP3 .......................................................3-74
Center High-Mounted Stoplamp (CHMSL)...........5-49
Chains, Tire...................................................5-74
Charging System Light....................................3-32
Check
Engine Lamp..............................................3-37
Checking Things Under the Hood......................5-12
Chemical Paint Spotting.................................5-106
Child Restraints
Infants and Young Children...........................1-35
Lower Anchors and Tethers for Children..........1-43
Older Children.............................................1-32
Securing a Child Restraint in a
Rear Seat Position...................................1-51
Securing a Child Restraint in the
Right Front Seat Position..........................1-54
Systems.....................................................1-39
Where to Put the Restraint...........................1-42
Chime Level Adjustment..................................3-96
Cigarette Lighter.............................................3-21
Circuit Breakers............................................5-109
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