2008 SAAB 9-3 tire pressure

255 Car care
DOT Markings: A code molded into the
sidewall of a tire signifying that the tire is in
compliance with the U.S. Department of
Transportation motor vehicle safety stan-
dards. The DOT code includes the Tire
Identification Number (TIN), an alphanu-
meric designator which can also identify the
tire manufacturer, production plant, brand
and date of production.
GVWR: Gross Vehicle Weight Rating see
page 287.
GAWR FRT: Gross Axle Weight Rating for
the front axle, see page 287.
GAWR RR: Gross Axle Weight Rating for
the rear axle, see page 287.
Intended Outboard Sidewall: The side of
an asymmetrical tire that must always face
outward when mounted on a vehicle.
Kilopascal (kPa): The metric unit for air
pressure. There are 6.9 kPa to one psi.
Light Truck (LT-Metric) Tire: A tire used
on light duty trucks and some multipurpose
passenger vehicles.
Load Index: An assigned number ranging
from 1 to 279 that corresponds to the load
carrying capacity of a tire.Maximum Load rating: The load rating for
a tire at the maximum permissible inflation
pressure for that tire.
Maximum Loaded Vehicle Weight: The
sum of curb weight; accessory weight; vehi-
cle capacity weight; and production options
weight.
Maximum Permissible Inflation Pres-
sure: The maximum cold inflation pressure
to which a tire may be inflated.
Normal occupant weight: The number of
occupants a vehicle is designed to seat mul-
tipled by 150 pounds (68 kg). See “Loading
Your Vehicle” on page 254.
Occupant Distribution: Designated seat-
ing positions.
Outward Facing Sidewall: The side of a
asymmetrical tire that has a particular side
that faces outward when mounted on a vehi-
cle. The side of the tire that contains a white-
wall bears white lettering or bears manufac-
turer, brand and or model name molding on
the other sidewall of the tire.
Passenger (P-Metric) Tire: A tire used on
passenger cars and some light duty trucks
and multipurpose vehicles.Recommended Inflation Pressure: Vehi-
cle manufacturer´s recommended tire infla-
tion pressure shown on the tire placard, see
“Inflation - Tire Pressure” on page 244 and
“Loading Your Vehicle” on page 254.
Radial Ply Tire: A pneumatic tire in which
the ply cords that extend to the beads are
laid at substantially 90 degrees to the cen-
treline of the tread.
Rim: A metal support for a tire or a tire and
tube assembly upon which the tire beads
are seated.
Sidewall: The portion of a tire between the
tread and the bead.
Speed rating: An alphanumeric code
assigned to a tire indicating the maximum
speed at which a tire can operate.
Traction: The friction between the tire and
the road surface. The amount of grip pro-
vided.
Treadwear Indicators: Narrow bands,
sometimes called “wear bars”, that show
across the tread of a tire when only
2/32 inch of tread remains. See “When It Is
Time for New Tires” on page 246.93_US_M08.book Page 255 Friday, May 11, 2007 11:37 AM
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256 Car careTread Width: The width of the tire´s tread.
UTQGS: Uniform Tire Quality Grade Stan-
dards, a tire information system that pro-
vides consumers with ratings for a tire´s
traction, temperature and treadwear. Rat-
ings are determined by tire manufacturers
using government testing procedures. The
rating are molded into the sidewall of the
tire. See “Uniform Tire Quality Grading” on
page 248.
Vehicle Capacity Weight: Is the number of
designated seating positions multipled by
150 pounds (68 kg) plus the rated cargo
load. See “Loading Your Vehicle” on
page 254.
Vehicle Maximum Load on the Tire: Load
on an individual tire due to curb weight,
accessory weight, occupant weight and
cargo weight.
Vehicle Placard: A label permanently
attached to a vehicle showing original
equipment tire size and the recommended
cold inflation pressure. See “Loading Your
Vehicle” on page 254.
Steps for Determining Correct
Load Limit1 Locate the statement “The
combined weight of occupants and
cargo should never exceed
XXX pounds” on your vehicle´s
placard.
2 Determine the combined weight of
the driver and passengers that will
be riding in your vehicle.
3 Substract the combined weight of
the driver and passengers from
XXX kilograms or XXX pounds.
4 The resulting figure equals the avail-
able amount of cargo and luggage
load capacity. For example, if the
“XXX” amount equals 1400 lbs. and
there will be five 150 lb. passengers
in your vehicle, the amount of avail-
able cargo and luggage load capac-
ity is 650 lbs. (1400–750 (5x150) =
650 lbs.).5 Determine the combined weight of
luggage and cargo being loaded on
the vehicle. That weight may not
safely exceed the available cargo
and luggage load capacity calcu-
lated in Step 4.
6 If your vehicle will be towing a trailer,
load from your trailer will be trans-
ferred to your vehicle. Consult this
manual to determine how this
reduces the available cargo and
luggage load capacity of your vehi-
cle.
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257 Car care
Winter tiresWinter (snow) tires are recommended for
winter climates where the majority of your
driving will be done on snow and ice. Winter
tires should be fitted to all four wheels to
maintain a proper balance. Your Saab
dealer can advise you of to the correct size
tire for your car (if different from the original
size) and also supply Saab approved winter
tires pre-mounted on steel or alloy rims.
Winter tires normally use a different speed
rating compared to summer/all season tires.
Make sure not to exceed the stated speed
rating on the tires you use.
Make sure that wheels with sensors for tire
pressure monitoring are fitted during
replacement if the car has automatic tire
pressure monitoring.Tire date codeTires should be regarded as perishable
goods. As the tires age, the rubber becomes
progressively harder, and the roadholding
ability of the tires diminishes. This is partic-
ularly true on winter tires.
Tires have a code that specifies their date of
manufacture. The first two digits denote the
week number and the last two digits the year
followed by a filled triangle.
Automatic tire pressure
monitoring systemThe system consists of a sensor in each
wheel and a receiver. The sensors are
located inside the tire in direct connection
with the air pressure valves.
Make sure that wheels with sensors for tire
pressure monitoring are fitted during
replacement if the car has automatic tire
pressure monitoring.Tire pressure information is transmitted
wirelessly to the receiver.
The system checks the tire pressures when
speed exceeds 19 mph (30 km/h).
The system is self-programming which
means that the wheels can be shifted
around without any need for adjustment.
The spare wheel has no sensor. The system
will trigger a warning/alarm because of that.
The sensor batteries last for 10 years or
around 160 000 km. The battery cannot be
replaced. The whole sensor must be
replaced.
WARNING
The system is an aid to the driver. The
driver always has the responsibility that
the tires have the correct air pressure.
For optimum safety, economy and com-
fort tire pressures should be checked reg-
ularly even if the automatic tire pressure
monitoring has not alarmed.
NOTETire replacement must take place with
great care to avoid damaging the sensors
that are built together with the valves.
Remove the rear side first.
Start to remove the tire opposite the
valve.
During removal the tire machine must
not come closer than ±10° from the
valve.
During fitting, start 20° after the valve
and finish 20° before the valve.
Do not inflate the tire with pressure
higher than 102 psi (700 kPa).
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258 Car careThe system does not warn if the tire pres-
sure is too high.If the tire pressure decreasesIf the tire pressure decreases to 6 psi
(41 kPa) below the recommended pressure
then a warning is shown on the SID as to
which tires are affected.
Adjust the pressure as soon as possible.
If the tire pressure continues to decrease
then an alarm is shown on the SID when the
pressure has decreased to 23 psi (159 kPa)
which is the lowest permitted pressure for
the tire.An alarm is also received when leakage is
greater than 3 psi/min. (20 kPa/min.).
Reduce speed (avoid heavy braking and
significant steering wheel movement) and
stop the car as soon as possible at a suita-
ble location. Replace the defective wheel.
The fault message can remain for up to
10 minutes after restarting the car. Then it
disappears if the tire pressure is correct.
Check/adjust the pressure in the other tires
when a fault message is shown.
Note that the tire pressure can decrease
without a puncture. The pressure could
decrease around 3 psi (20 kPa) during a three month period. The outside tempera-
ture could also affect tire pressure.
If the system has triggered a low pressure
warning or alarm then the tire pressure must
be adjusted to the recommended pressure
in order to put out the warning or alarm.
For further information on tire air pres-
sure, see page 244.
Allow 10 minutes for the system to recog-
nize the wheel/sensors positions after fitting
a new set of tires. During this period no low
pressure warning or alarm can be triggered.
Tire pressure low,
front right. Check tires.
Low tire pressure rear
left. Make a safe stop.
Valve with sensor
Valve without sensor
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259 Car care
MalfunctionsThe above message is shown on the SID if:
a wheel without pressure sensor has
been fitted (e.g. spare wheel)
one or more pressure sensors are broken
or missing
a fault has arisen in the receiver
a system error has arisen.
Removing a tireRemove the tire with a tire machine. It is
important to follow the instructions for the
tire machine as well.
Do not fit the tire tool in an area ±10° from
the valve.
Start removing opposite the valve.
Remove the rear side first.
Fitting a tireFit the tire with a tire machine. It is important
to follow the instructions for the tire machine
as well.
Start to fit about 20° after the valve.
Finish fitting before an area 20° from the
valve.
Do not inflate the tire to a pressure higher
than 102 psi (700 kPa). Tire pressure system
failure. Contact service.
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260 Car careCompact spareThe compact spare is light and easy to
handle when changing the tire. Its use is
only permitted when a standard tire has sus-
tained a puncture. The maximum life of the
tire is only just over 2,000 miles (3,500 km).
Do not exceed 50 mph (80 km/h) with the
compact spare fitted.
The tire pressure should be 60 psi
(420 kPa). Put the punctured tire in the
spare wheel well under the trunk floor.
Have the standard tire repaired and refitted
as soon as possible.The spare tire, the tools and the jack with its
crank are carried under a panel in the trunk.
Fold the carpeting forward to ease access to
the tools and spare tire.
The screwdriver handle has a “button” for
removing plastic rivets. This type of rivet
must be removed when changing the light
bulb in the trunk lid (see page 230).
Your Saab is equipped with a trip computer
and you can use its “Speed warning” func-
tion, to monitor driving speed since you
must not exceed 50 mph (80 km/h), see
page 92.
Driving with a compact wheel
fittedObserve the following when the compact
spare tire is fitted:
The compact spare is light and easy to
handle when changing a tire.
Do not drive further than necessary with
the compact spare fitted - the maximum
life of the tire is only just over 2,000 miles
(approx. 3,500 km).
Refit the standard tire as soon as possi-
ble.
Fitting a spare tire/wheel without pressure
sensor will trigger a malfunction
message, see page 259.
Important considerations when driving with
a compact spare tire:
The car’s ground clearance is reduced.
WARNING
The spare tire or punctured tire must be
stowed under the trunk floor, and secured
in place with the retaining nut.
WARNING
Do not exceed 50 mph (80 km/h). The
tire can overheat affecting the car’s
roadholding.
Tire pressure: refer to page 294.
The spare tire or punctured tire must
be stowed under the trunk floor, and
secured in place with the retaining nut.
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272 Car careWhat causes rust?Steel body panels of automobiles are sub-
ject to rusting whenever air and moisture
manage to penetrate the protective finish.
Body panels may rust through if the process
is unchecked. Rusting can occur wherever
water is trapped or where the car’s panels
are continuously damp.
Damage to paint and undercoating by
stones, gravel and minor crashes immedi-
ately exposes metal to air and moisture.
Road salts used for de-icing will collect on
the bottom of the car and promote rusting.
Areas of the country with high humidity have
a greater potential for rust problems, espe-
cially where salt is used on roads or there is
moist sea air. Industrial pollution (fallout)
may also damage paint and promote rust-
ing.
Preventive maintenanceThe following procedures are necessary to
help protect against rusting. Refer also to
the terms and conditions of the Performa-
tion Limited Warranty described in the war-
ranty booklet.
1Wash the car frequently, and wax at
least twice a year. Under adverse
conditions, where there is a rapid
buildup of dirt, sand or road salt, wash
your car at least once a week. After
extreme exposure to salted snow or
slush, evidenced by a white film on the
car, wash the car immediately. Frequent
washing will prevent paint damage from
acid rain and other airborne contami-
nants such as tree sap and bird drop-
pings. If any of these contaminants are
noticed on the car the finish should be
washed immediately.
Begin washing by rinsing the entire car
with water to loosen and flush off heavy
concentrations of dirt (include the
underbody).Sponge the car with a solution of either a
good quality car soap or mild general
purpose (dish washing) detergent and
water.
Rinse car thoroughly with clean water.
After washing, check and clear all
drains in doors and body panels.
Wipe the car dry, preferably using a
chamois.
2Clean the underside of the car during
the winter. Use high pressure water to
clean the car’s underside (floor panels,
wheel wells) at least at mid-winter and in
the spring.
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275 Car care
Other than in extremely cold weather, do not
screen the radiator, e.g. with netting, as this
will greatly diminish its cooling capacity.
Applicable to the manual climate control
system - During cold months the air condi-
tioning should be switched on once or
twice a month and run for 5–10 minutes
during highway driving once the engine is
warm.
This action saves the gaskets in the
compressor from being spoiled. The
compressor uses a lubricant that circu-
lates with the coolant.
Note
The A/C system cannot be switched on
when the outside temperature is below 32°F
(0°C). Turn on the A/C system when the car
is standing in a warm place. Simplest is to
always have the A/C button pressed in. The
A/C system will then cut in automatically
when the outside temperature is high
enough.
Headlight aimingThe vehicle has a visual optical headlight
aiming system equipped with vertical
aiming device. The aim has been preset at
the factory and should normally not need
further adjustments.
If your headlights are damaged in a crash,
the headlight aim may be affected. If you
believe your headlights need to be
re-aimed, we recommend that you take it to
your Saab dealer for service. However, it is
possible for you to re-aim your headlights as
described in the following procedure.To check the aim, the vehicle should be
properly prepared as follows:
The vehicle shall be placed so that the
headlights are 25 ft (7.6 m) from a light
colored wall or other flat surface. The
aiming area should be darkened, this will
improve your ability to see the beam of the
low beam headlight being aimed.
An optical headlamp aimer can also be
used and will than replace the wall.
The vehicle must have all four wheels on
a perfectly level surface which is level all
the way to the wall or other flat surface.
The vehicle should be placed so it is
perpendicular to the wall or other flat
surface.
The vehicle should be unloaded and fuel
tank full, and one person or 160 lbs.
(75 kg) on the drivers seat.
The vehicle should be fully assembled
and all other work stopped while headlight
aiming is being done.
The vehicle should not have any snow, ice
or mud attached to it.
Tires should be inflated to the prescribed
pressure.
Close all doors.
Rock the vehicle to stabilize the suspen-
sion.
Headlight aiming is done with the vehicle
low beam lamps. The high beam lamps will
WARNING
Before checking/adjusting the headlight
aiming, switch off the engine to avoid
danger of fingers and hands being injured
by moving parts.
The radiator fan can start up even when
the engine is switched off.NOTETo make sure that your headlights are
aimed properly read all instructions
before beginning. Failure to follow these
instructions could cause damage to
headlight parts or a not correctly aimed
headlight.
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