flat tire SAAB 9-5 2008 Owners Manual

29 Safety
Airbag The AIRBAG system comprises an airbag in
the steering wheel, a front passenger airbag
and side airbags in the front seats.
The system supplements the protection
provided by the safety belts to further
enhance the safety of the occupants.
If a fault is detected in the AIRBAG, the
AIR BAG warning light on the main instru-
ment panel will come on (see pages 61
and 37). When the system is triggered by impact of a
frontal crash, the airbags in the steering
wheel and passenger side of the dash board
are inflated, after which they deflate through
vents in the back of the bags.
The entire process takes less than
0.1 second – literally, faster than the blink-
ing of an eye.
The driver and passenger airbags are
referred to as ‘smart’ airbags. This means
that the system compensates for factors
such as the force of the collision.Note:
The sensor reacts differently depending on
whether or not the front seatbelts on the
driver’s and passenger sides are used. Sit-
uations can therefore arise where only one
of the airbags inflates.
It is also possible for only the seatbelt pre-
tensioners to be activated and for the air-
bags to remain uninflated.
These airbags are triggered only by moder-
ate to severe frontal or near-frontal crashes.
They will not be activated by minor front-end
impacts, rear-end or side impacts, or by the
car rolling over.
WARNING
To reduce risk of injury:
Always wear your safety belt.
Always adjust your seat so that you
are as far back as possible but still
able to operate the pedals and reach
the steering wheel and controls com-
fortably.
Children 12 and under or shorter than
59 inches (150 cm) should always
travel in the rear seat as the car is fitted
with a passenger airbag.
Never fit a child seat in front of the pas-
senger airbag.
IB419
Inflated airbag (driver side) Inflation and deflation together take less than
0.1 second.
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167 Starting and driving
Long-term parkingIf the car is not going to be used for some
time, e.g. 3–4 months, the following steps
are recommended:
Run the engine to normal temperature
before long-term parking.
Drain the washer-fluid reservoir and
hoses.
Wash and wax the car. Clean the rubber
seals on the hood, luggage compartment
lid and doors, and lubricate them with
glycerol (glycerin).
After washing the car, dry the brake discs
by taking the car out on the road and
applying the brakes a few times. Fill the fuel tank with fuel to prevent
condensation forming in it.
Top up the coolant and check the anti-
freeze before the onset of winter.
Park the car in a dry, covered and
well-ventilated building. Leave the park-
ing brake OFF!
Disconnect the negative (–) battery lead.
If frost is likely to occur during the
long-term parking, remove the battery
and store it away from the frost.
Ideally, the car should be put up on blocks,
with the wheels off the ground. If this is not
possible, inflate the tires to about 43 psi
(300 kPa).
Leave all the windows open a crack and
cover the car with a fabric tarpaulin – not
one made of plastic.95_US_M08.book Page 167 Friday, May 11, 2007 1:06 PM
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181 Starting and driving
Driving at nightBear in mind the following points when
driving at night:
Nighttime driving requires your full
concentration.
Do not rush. Count on your journey taking
slightly longer.
The number of drivers under the influence
of drugs is likely to be greater at night than
during the day.
Do not stare at the headlights of oncom-
ing vehicles.
Avoid driving at night if you have poor
eyesight. Night vision deteriorates with
age.
Keep your car's headlights, windows and
mirrors clean. Also, if you wear glasses,
make sure they are clean.
Make sure you are well rested before
starting a long journey. Take a break every
other hour.
Only eat light meals. Heavy meals have a
tendency to induce tiredness.
Driving with a loadThe driving characteristics of the car are
affected by the way it is loaded.
Place heavy loads as far forward and as
low as possible in the trunk.
Secure the load to the tie downs, see
page 131.
The load should be such that the car´s
total weight or axle weight are not
exceeded, see page 260.
Heavy loads mean that the car’s center of
gravity is further back. As a result, the car
will sway more during evasive steering.
Never exceed the permissible load in the
roof box3, even if there is room for more.
Ensure that the tire pressure is correct –
slight overinflation is preferable to under-
inflation.
The braking distance of a loaded car is
always greater. Keep your distance from
the vehicle in front.
Roof loads can negatively affect tele-
communication.
Tire pressure, see page 269.
Additional information on tires, see page
222.
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182 Starting and drivingTires
The tire pressure should match the current
load and speed of the car; for cars sold in
U.S. see page 231; for cars sold in Canada
see page 269.
The tire pressures given apply to cold tires,
that is tires that are the same temperature
as the outside air temperature.
The tire pressure increases as the tires
become warm (e.g. during highway driving)
with approximately 0.3 bar (4 psi). When
the temperature of the tires changes by 50°
(10°C), the tire pressure will change 0.1 bar
(2 psi).Never reduce the pressure of a hot tire. If the
tires are hot when you check them, only
increase the pressure, if necessary.
Underinflated tires wear more quickly than
slightly overinflated tires.
If a valve is leaking, simply unscrew it and fit
a new one.
Important! Remember to adjust the tire
pressures if you change the load in the car
or intend to drive at substantially lower or
higher speeds than normal.
WARNING
Check the tire pressure at least once a
month and before long journeys. Under-
inflation can result in:
Punctures
Separation of the tire and tread
Damage to the sidewalls
Damage to the rims on poor roads
Poor handling characteristics
Premature tire wear
Increased fuel consumption.95_US_M08.book Page 182 Friday, May 11, 2007 1:06 PM
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222 Car care and technical informationTires Your new vehicle comes with high-quality
tires made by a leading tire manufacturer. If
you ever have questions about your tire
warranty and where to obtain service, see
your Saab Warranty and Service Record
Booklet for details.
Inflation - Tire PressureThe Tire-Loading Information label shows
the correct inflation pressures for your tires
when they’re cold. “Cold” means your vehi-
cle has been sitting for at least three hours
or driven no more than 1 mile (1.6 km).
Notice: Don’t let anyone tell you that
underinflation or overinflation is all
right. It’s not. If your tires don’t have
enough air (underinflation), you can get
the following:
Too much flexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy
If your tires have too much air (overinfla-
tion), you can get the following:
Unusual wear
Bad handling
Rough ride
Needless damage from road hazardsAdjust the tire pressure to match the current
load and speed of the car (see page 269).
The stated tire pressures apply to cold tires,
i.e. tires that are the same temperature as
the outside air temperature. Tire pressure
increases as the tires become warm (e.g.
during highway driving) by approximately
0.3 bar (4 psi). When the temperature of the
tires changes by 50°F (10°C), the tire pres-
sure will change 0.1 bar (2 psi).
Never reduce the pressure of a hot tire. If the
tires are hot when you check them, only
increase the pressure, if necessary.
WARNING
Poorly maintained and improperly used
tires are dangerous.
Overloading your tires can cause
overheating as a result of too much
friction. You could have an blow-out
and a serious accident. See “Loading
Your Vehicle” on page 231.
Underinflated tires pose the same
danger as overloaded tires. The
resulting accident could cause serious
injury. Check all tires frequently to
maintain the recommended pressure.
Tire pressure should be checked
when your tires are cold.
Overinflated tires are more likely to be
cut, punctured or broken by a sudden
impact – such as when you hit a pot-
hole. Keep tires at the recommended
pressure.
Worn, old tires can cause accidents. If
your tread is badly worn, or if your tires
have been damaged, replace them.95_US_M08.book Page 222 Friday, May 11, 2007 1:06 PM
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223 Car care and technical information
High speed operation When to check
Check your tires once a month or more.
Don’t forget your compact spare tire. It
should be at 60 psi (420 kPa).How to CheckUse a good quality pocket-type gauge to
check tire pressure. You can’t tell if your
tires are properly inflated simply by looking
at them. Radial tires may look properly
inflated even when they’re underinflated.
Be sure to put the valve caps back on the
valve stems. They help prevent leaks by
keeping out dirt and moisture.Tire Inspection and RotationTires should be rotated every 10,000 miles
(16 000 km).
Any time you notice unusual wear, rotate
your tires as soon as possible and check
wheel alignment. Also check for damaged
tires or wheels. See “When It Is Time for
New Tires” on page 224 and “Wheel
Replacement” on page 227 for more infor-
mation.
The purpose of regular rotation is to achieve
more uniform wear for all tires on the vehi-
cle. The first rotation is the most important.
When rotating your tires, always use the
correct rotation pattern. Left front tire to left
rear. Left rear tire to right front. Right front to
right rear. Right rear to left front.Don’t include the compact spare tire in your
tire rotation.
After the tires have been rotated, adjust the
front and rear inflation pressures as shown
on the Tire-Loading Information label. Make
certain that all wheel nuts are properly tight-
ened. See page 241.
WARNING
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 infla-
tion 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 inflation pressure for the vehicle
load.
WARNING
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 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 you need to, to get all the
rust or dirt off. See “Changing a wheel” on
page 239.
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224 Car care and technical informationFlat spottingAll tires get hot, especially on long journeys
or when the car is driven hard. After the car
has been parked with hot tires and the tires
have cooled down, a flat spot can form in the
tire, where it is in contact with the ground.
The same can occur if the car has not been
moved for a long time.
Flat spots can cause vibration that can be
felt through the steering wheel, similar to
that experienced when the wheels need bal-
ancing.
Flat spots of this type disappear once the
tires get hot again, usually after 10–15 miles
(20–25 km) of driving at cruising speed.
When It Is Time for New TiresOne way to tell when it’s 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 can’t be repaired well
because of the size or location of the
damage.
Treadwear indicatorsThe tires incorporate wear indicators in the
form of smooth, treadless strips across the
width, which become visible when only
2/32" (1.6 mm) of tread remains. As soon as
the indicators become visible, new tires
should be fitted without delay.
Make sure you are familiar with the legal
limit for minimum tread depth in your
country and also any regulations gov-
erning the use of winter (snow) tires.
SG840
Wear indicators
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225 Car care and technical information
Buying New TiresTo find out what kind and size of tires you
need, look at the Tire-Loading Information
label.
Before changing to wheels/tires of another
size, we recommend that you contact an
authorized Saab workshop regarding
acceptable options. See also page 268
Wheels/tires combinations that are not
approved by the vehicle manufacturer can
negatively affect the car’s directional stabil-
ity, steering and braking in both wet and dry
conditions.
The wheels and tires have been carefully
matched to the characteristics of the car and
play a key role in its outstanding roadhold-
ing and handling.
Do not take it for granted that a wheel/tire
combination will work in the best possible
way, just because it can be fitted to the car.
To ensure that the speedometer is as accu-
rate as possible it should be reprogrammed
if wheels of a different dimension are fitted.
Contact a Saab dealer.
Because of front wheel drive, the front tires
tend to wear faster than the rear ones. New
tires should always be fitted in pairs, so that
tires on the same axle have the same
amount of tread.
Store wheels lying flat or hanging – never
standing upright.
NOTEWide wheels and tires with sidewalls that
are too low can:
be damaged in potholes etc.
cause springs, shock absorbers and
wheel bearings and body mountings
can be overloaded.
cause the wheels to come into contact
with chassis and body components.
can affect the function of the Elec-
tronic Stability Program (ESP
®).
The speed and load limits for the tires
must not be exceeded; see page 230.
Wheels larger than 17” must not be fitted.
The maximum permissible offset is
49 mm.
WARNING
Mixing tires could cause you to lose con-
trol while driving. If you mix tires of differ-
ent sizes or types (radial and bias-belted
tires), the vehicle may not handle prop-
erly, and you could have a crash. Using
tires of different sizes may also cause
damage to your vehicle. Be sure to use
the same size and type tires on all wheels.
It’s all right to drive with your compact
spare temporarily, it was developed for
use on your vehicle. See “Compact spare
tire” on page 237.
WARNING
If you use bias-ply tires on your vehicle,
the wheel rim flanges 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.
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226 Car care and technical informationUniform Tire Quality GradingQuality grades can be found where applica-
ble on the tire sidewall between tread shoul-
der and maximum section width. For exam-
ple:
Treadwear 200 Traction AA
Temperature A
The following information relates to the
system developed by the United States
National Highway Traffic Safety Administra-
tion, which grades tires by treadwear, trac-
tion and temperature performance. (This
applies only to vehicles sold in the United
States.) The grades are molded on the side-
walls of most passenger car tires. The Uni-
form Tire Quality Grading 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-pro-
duction 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 Perfor-
mance 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 specified government test course. For
example, a tire graded 150 would wear one
and a half (1.5) times as well on the govern-
ment course as a tire graded 100. The rela-
tive performance of tires depends upon the
actual conditions of their use, however, and
may depart significantly from the norm due
to variations in driving habits, service prac-
tices 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 repre-
sent the tire’s ability to stop on wet pave-
ment as measured under controlled condi-
tions on specified government test surfaces
of asphalt and concrete. A tire marked C
may have poor traction performance. Warn-
ing: The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.Temperature – A, B, C
The temperature grades are A (the highest),
B, and C, representing the tire’s resistance
to the generation of heat and its ability to dis-
sipate heat when tested under controlled
conditions on a specified indoor laboratory
test wheel. Sustained high temperature can
cause the material of the tire to degenerate
and reduce tire life, and excessive temper-
ature can lead to sudden tire failure. The
grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A
represent higher levels of performance on
the laboratory test wheel than the minimum
required by law.
Warning: The temperature grade for this tire
is established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive loading,
either separately or in combination, can
cause heat buildup and possible tire failure.95_US_M08.book Page 226 Friday, May 11, 2007 1:06 PM
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228 Car care and technical informationTire Chains
Notice: If your vehicle does not have
225/45R17 alt. 235/45 R17 size tires, use
tire chains only where legal and only
when you must. Contact your Saab
dealer regarding suitable snow chains.
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 instruc-
tions. If you can hear the chains contact-
ing 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.If a Tire Goes Flat
It’s unusual for a tire to “blow-out” while
you’re driving, especially if you maintain
your tires properly. If air goes out of a tire,
it’s much more likely to leak out slowly. But
if you should ever have a “blow-out”, here
are a few tips about what to expect and what
to do:
If a front tire fails, the flat tire will create a
drag that pulls the vehicle toward that side.
Take your foot off the accelerator pedal and
grip the steering wheel firmly. Steer to main-
tain lane position, and then gently brake to
a stop well out of the traffic lane.
A rear blow-out, particularly on a curve, acts
much like a skid and may require the same
correction you’d use in a skid. In any rear
blowout, remove your foot from the acceler-
ator pedal. Get the vehicle under control by
steering the way you want the vehicle to go.
It may be very bumpy and noisy, but you can
still steer. Gently brake to a stop – well off
the road if possible.
If a tire goes flat, the next part shows how to
use your jacking equipment to change a flat
tire safely.
WARNING
If your vehicle has 225/45 R17 alt. 235/45
R17 size tires, don’t use tire chains,
there’s 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 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 manu-
facturer’s instructions. To help avoid
damage to your vehicle, drive slowly,
readjust or remove the device if it’s con-
tacting your vehicle, and don’t spin your
wheels.
If you do find traction devices that will fit,
install them on the front tires.95_US_M08.book Page 228 Friday, May 11, 2007 1:06 PM
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