2007 DODGE SPRINTER fuel pressure

211 Operation
Tires and wheels
4
Do not make a visual judgment when de-
termining proper inflation. Radial tires may
look properly inflated even when they are
underinflated.
The tire inflation pressure should be
checked regularly, i.e. at least each time
you refuel the vehicle, and should only be
adjusted on cold tires. The preferred inter-
val for checking the tire inflation pressure,
however, is before each trip.
The tires can be considered cold if the ve-
hicle has been parked for at least 3 hours
or driven less than 1 mile (1.6 km) at an
ambient temperature of approximately
68 °F (20 °C).
Follow recommended cold tire inflation
pressures listed on vehicle placard.
Keeping the tires properly inflated provi-
des the best handling, tread life and riding
comfort.
The pressure difference between the tires
on a single axle should not exceed 1.5 psi
(10 kPa).
In addition to the placard, also consult the
tire inflation pressure table (\2page 370).For more information, refer to “Important
notes on tire inflation pressure”.
Placard
The placard is located on the driver’s door
B-pillar.
Tire and loading information placardTire inflation pressure placard
1Recommended cold tire inflation pres-
sure
iThe data shown on the tire and loading
information placard
1and on the tire in-
flation pressure placard is for illustrati-
ve purposes only. Tire data is specific
to each vehicle and may vary from the
data shown in the illustration below.
Refer to your vehicle’s placard for actu-
al data specific to your vehicle.
1 For vehicles with a gross weight capacity less
than 10 000 lbs (4 536 kg) (USA only).

212 OperationTires and wheels
4
The placard lists the recommended cold
tire inflation pressures for all load conditi-
ons up to the maximum permissible weight
limits (GAWR). The tire inflation pressures
listed apply to the tires installed as original
equipment.
Important notes on tire inflation pres-
sure
Tire temperature and tire inflation pressure
are also increased while driving, depending
on the driving speed and the tire load.
Tire inflation pressure changes by approxi-
mately 1.5 psi (0.1 bar) per 18 °F (10 °C)
of air temperature change. Keep this in mind when checking tire inflation pressure
where the temperature is different from
the outside temperature.
For example:
If the inside temperature is 68 °F (20 °C)
and the outside temperature is 32 °F
(0 °C) then the cold tire inflation pressure
should be increased by 3 psi (0.2 bar),
which equals 1.5 psi (0.1 bar) for every
18 °F (10 °C) for this outside temperature
condition.
Check tire pressures more often if subject
to a wide range of outdoor temperatures,
as tire pressures vary with temperature
changes.Warning
G
If the tire inflation pressure repeatedly
drops:
\4Check the tires for punctures from for-
eign objects.
\4Check to see whether air is leaking from
the valves or from around the rim.
Warning
G
Tire pressure may increase during opera-
tion.
Never reduce this normal pressure build up
or your tire pressure will be too low.
Underinflated tires wear excessively and/or
unevenly, adversely affect handling and fuel
economy, and are more likely to fail from be-
ing overheated.

213 Operation
Tires and wheels
4
The tire inflation pressure should be
checked regularly, i.e. at least each time
you refuel the vehicle. The preferred inter-
val for checking the tire inflation pressure,
however, is before each trip.
The inflation pressures specified either on
the tire and loading information placard on
the driver’s door B-pillar or on tire pressure
label below the driver’s seat on an outward
facing position of the mounting pillar are
always cold tire inflation pressures. Check
and adjust the tire inflation pressure when
the tires are cold. Cold tire inflation pres-
sure is defined as the tire pressure after
the vehicle has been parked for at least
3 hours or driven less than 1 mile (1.6 km)
at an ambient temperature of approxi-
mately 68 °F (20 °C).
The cold tire inflation pressure must not
exceed the maximum tire inflation pres-
sure molded into the tire side wall, see
"Tire labeling" (\2page 222).
If you check the tire inflation pressure
when the tires are warm (the vehicle has
been driven for several miles or sitting less than 3 hours), the reading will be higher
than the cold reading. This is normal. Do
not let air out to match the specified cold
tire inflation pressure. Otherwise, the tire
will be underinflated.Checking tire inflation pressure manu-
ally
Follow the steps below to achieve correct
tire inflation pressure:
\1Remove the cap from the valve on one
tire.
\1Firmly press a tire gauge onto the
valve.
\1Read the tire inflation pressure on the
tire gauge and compare it with the rec-
ommended tire inflation pressure on
the placard on the driver’s door B-pillar
or on the tire pressure label below the
driver’s seat. If necessary, add air to
achieve the recommended tire inflation
pressure.
\1Reattach the valve cap.Checking tire inflation pressure
Warning
G
Observe the recommended tire inflation
pressures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride com-
fort, wear unevenly, increase stopping dis-
tance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road de-
bris, potholes etc.
Do not overload the tires by exceeding the
specified load limit as indicated on the tire
and loading information placard on the driv-
er’s door B-pillar. Overloading the tires can
overheat them, possibly causing a blowout.
iIf you have overfilled the tire, release
tire inflation pressure by pushing the
metal stem of the valve with for exam-
ple a tip of a pen. Then recheck the tire
inflation pressure with the tire gauge.

215 Operation
Tires and wheels
4
pressure which was stored at the time of
calibration of the TPMS after you inflated the
tires.
Always ensure that you re-calibrate the
TPMS after you inflated the tires to the rec-
ommended cold inflation pressure.
Always adjust tire inflation pressure accord-
ing to the tire and loading information plac-
ard on the driver’s door B-pillar.
Underinflated tires wear excessively and/or
unevenly, adversely affect handling and fuel
economy, and are more likely to fail from be-
ing overheated.
Overinflated tires can adversely affect han-
dling and ride comfort, wear unevenly, in-
crease stopping distance, and result in
sudden deflation (blowout) because they are
more likely to become punctured or dam-
aged by road debris, potholes etc.
The TPMS is not able to issue a warning due
to a sudden dramatic loss of pressure (e.g.
tire blowout caused by a foreign object). In
this case bring the vehicle to a halt by care-
fully applying the brakes and avoiding
abrupt steering maneuvers.
Warning
G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
tire and loading information placard. (If your
vehicle has tires of a different size than the
size indicated on the vehicle placard or the
tire inflation pressure label, you should de-
termine the proper tire inflation pressure for
those tires).
As an added safety feature, your vehicle has
been equipped with a Tire Pressure Monitor-
ing System (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly underinflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significant-
ly underinflated tire causes the tire to over-
heat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately 1 minute
and then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the mal-
function exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended.
\2\2

219 Operation
Tires and wheels
4
Always adjust the tire inflation pressure ac-
cording to the tire and loading information
placard on the driver’s door B-pillar.
Underinflated tires wear excessively and/or
unevenly, adversely affect handling and fuel
economy, and are more likely to fail from be-
ing overheated.
Overinflated tires can adversely affect han-
dling and ride comfort, wear unevenly, in-
crease stopping distance, and result in
sudden deflation (blowout) because they are
more likely to become punctured or dam-
aged by road debris, potholes etc.
The TPMS is not able to issue a warning due
to a sudden dramatic loss of pressure (e.g.
tire blowout caused by a foreign object). In
this case bring the vehicle to a halt by care-
fully applying the brakes and avoiding
abrupt steering maneuvers.
Warning
G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or the tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or the tire inflation pressure label,
you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has
been equipped with a Tire Pressure Monitor-
ing System (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly underinflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significant-
ly underinflated tire causes the tire to over-
heat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately 1 minute
and then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the mal-
function exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended.
\2\2

221 Operation
Tires and wheels
4
\1Press thej or kbutton repeat-
edly until you see the current inflation
pressures for each tire appear in the
display or the following message ap-
pears in the display
Tire pres. displayed
after driving
for several minutes
\1Press reset button0 on the instrument
cluster (\2page 14).
The following message will appear in
the multifunction display:
Tire pres.
Adjust pres.
\1Press æbutton.
The following message will appear in
the multifunction display:
Tire pres. monitor
reactivatedAfter a few minutes' driving, the cur-
rent tire inflation pressure values are
accepted as reference values and then
monitored.If you wish to cancel activation:
\1Press çbutton.
Potential problems associated with un-
derinflated and overinflated tires
Proper tire inflation pressure is essential to
the safe and satisfactory operation of your
vehicle. Three primary areas are affected
by improper tire inflation pressure:
1. Safety
2. Economy
Improper inflation pressures can cause un-
even wear patterns to develop across the
tire tread. These abnormal wear patterns
will reduce tread life resulting in a need for
earlier tire replacement. Underinflation
also increases tire rolling resistance and
results in higher fuel consumption.
Warning
G
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride com-
fort, wear unevenly, increase stopping dis-
tance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road de-
bris, potholes etc.Warning
G
Improperly inflated tires are dangerous and
can cause accidents.
Unequal tire inflation pressures can cause
steering problems. You could lose control of
your vehicle.
Unequal tire inflation pressures from one
side of the vehicle to the other can cause
the vehicle to drift to the right or left. Always
drive with each tire inflated to the recom-
mended cold tire inflation pressure.
\2\2

227 Operation
Tires and wheels
4
For more information on tire load rating,
refer to "Tire size designation, load and
speed rating" (\2page 222).
For information on calculating total and
cargo load capacities, refer to "Tire and
loading information" (\2page 205). 1Maximum permissible tire inflation
pressure
This is the maximum permissible tire infla-
tion pressure for the tire.Always follow the recommended tire infla-
tion pressure (\2page 210) for proper tire
inflation.Warning
G
Do not overload the tires by exceeding the
specified load limit as indicated on the tire
and loading information placard on the driv-
er’s door B-pillar. Overloading the tires can
overheat them, possibly causing a blowout.
Overloading the tires can also result in han-
dling or steering problems, or brake failure.
Never overload them.
The vehicle maximum load on the tire must
not exceed the load carrying capacity of the
tire on your vehicle.
You will not exceed the tire’s load carrying
capacity if you adhere to the loading condi-
tions, tire size and cold tire inflation pres-
sures specified on the tire and loading
information placard.
Maximum tire inflation pressureiFor illustrative purposes only. The actu-
al data on tires is specific to each vehi-
cle and may vary from the data shown
in the above illustration.
Warning
G
Never exceed the maximum tire inflation
pressure. Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride com-
fort, wear unevenly, increase stopping dis-
tance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road de-
bris, potholes etc.

228 OperationTires and wheels
4
1Plies in side wall
2Plies under tread
This marking tells you about the type of
cord and number of plies in the side wall
and under the tread.Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as factory-in-
stalled equipment (whether installed or
not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between the tire
section height and the section width ex-
pressed in percentage.Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for at least 3 hours or driv-
en no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.Tire ply materialiFor illustrative purposes only. The actu-
al data on tires is specific to each vehi-
cle and may vary from the data shown
in the above illustration.
Tire and loading terminology