Pressure BMW 328I 2011 E90 User Guide

Things to remember when driving
122
Things to remember when driving
Break-in period
Moving parts need breaking-in time to adjust to
each other. Please follow the instructions below
in order to achieve the optimal service life and
economy of operation for your vehicle.
Engine and differential
Always obey all official speed limits.
Up to 1,200 miles/2,000 km
Drive at varying engine and road speeds but do
not exceed:
>Gasoline engine
4,500 rpm or 100 mph/160 km/h
>Diesel engine
3,500 rpm or 93 mph/150 km/h
Avoid full-throttle operation and use of the
transmission's kickdown mode.
After driving 1,200 miles/2,000 km
Engine and vehicle speeds can be gradually
increased.
Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac-
tion potential until after an initial break-in
period. Therefore, drive cautiously during the
first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive cautiously during this break-in
period.
Clutch
The function of the clutch reaches its optimal
level only after a distance driven of approx.
300 miles/500 km. During this break-in period,
engage the clutch gently.
Following part replacement
The same break-in procedures should be
observed if any of the components mentioned
above have to be renewed in the course of the
vehicle's operating life.
Saving fuel
The fuel consumption of your vehicle depends
on several factors. You can lower fuel consump-
tion and the environmental impact by taking
certain measures, adjusting your driving style
and having the vehicle serviced regularly.
Remove any unneeded cargo
Additional weight increases fuel consumption.
Remove any mounted parts after you
have finished using them
Remove unneeded additional mirrors, the roof
rack and the rear luggage rack after use.
Mounted parts affect the vehicle's aerodynam-
ics and increase fuel consumption.
Close the windows and glass roof
An open glass roof or window causes higher air
resistance and thus increases fuel consump-
tion.
Check tire inflation pressure regularly
Check the tire inflation pressure at least twice a
month and before embarking on a long journey,
and correct it if necessary.
Low tire inflation pressure causes higher rolling
resistance and thus increases fuel consumption
and tire wear.
Set off immediately
Do not let the engine warm up while the car is
still standing, but set off immediately at moder-
ate engine speed. This is the fastest way for the
cold engine to reach its operating temperature.

Things to remember when driving
124
Diesel particulate filter*
The diesel particulate filter collects soot parti-
cles and burns them periodically at high tem-
peratures. This cleaning process takes several
minutes. During cleaning, you may notice that
the engine temporarily runs less smoothly and
that a somewhat higher engine speed is neces-
sary to achieve the accustomed performance.
Also, noises may be heard and a slight amount
of smoke may emerge from the exhaust, even
for a short period after the engine is switched
off.
Hydroplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a wedge
of water can form between tires and road sur-
face. This situation, known as hydroplaning,
means that the tire can completely lose contact
with the road surface, so that neither the car can
be steered nor the brake be properly applied.<
The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page222.
Driving through water
Drive through water on the road only if it is
not deeper than 1 ft/30 cm, and then only
at walking speed at the most. Otherwise, the
vehicle's engine, the electrical systems and the
transmission may be damaged.<
Use the parking brake on inclines
On inclines, do not hold the vehicle for a
lengthy period using the clutch; use the
parking brake instead. Otherwise, greater
clutch wear will result.<
For more information about the drive-off
assistant, refer to page87.
Braking safely
Your BMW is equipped with ABS as a standard
feature. Applying the brakes fully is the most
effective way of braking in situations in which
this is necessary. Since the vehicle maintains
steering responsiveness, you can still avoid
possible obstacles with a minimum of steering
effort.
Pulsation of the brake pedal, combined with
sounds from the hydraulic circuits, indicate that
ABS is in its active mode.
Driving in wet conditions
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Monitor traffic conditions to
ensure that this maneuver does not endanger
other road users. The heat generated in this
process helps dry the pads and rotors to ensure
that full braking efficiency will then be available
when you need it.
Hills
To prevent overheating and the resulting
reduced efficiency of the brake system,
drive long or steep downhill gradients in the
gear in which the least braking is required. Even
light but consistent brake pressure can lead to
high temperatures, brake wear and possibly
even brake failure.<
You can increase the engine's braking effect by
shifting down, all the way to first gear if neces-
sary. This strategy helps you avoid placing
excessive loads on the brake system. Down-
shifting in manual mode of the automatic trans-
mission, refer to page59.
Never drive with the clutch held down,
with the transmission in neutral or with
the engine switched off; otherwise, engine
braking action will not be present or there will be
no power assistance to the brakes or steering.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
pedals; otherwise, pedal function could be
impaired.<

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Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on
rotors, while contaminants accumulate on the
brake pads. This occurs because the minimum
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.
Should corrosion form on the brake rotors, the
brakes will tend to respond with a pulsating
effect that even extended application will fail to
cure.
When the vehicle is parked
Condensation forms while the automatic cli-
mate control is in operation, and then exits
under the vehicle. Traces of condensed water
under the vehicle are therefore normal.
Cargo loading
To avoid loading the tires beyond their
approved carrying capacity, never over-
load the vehicle. Overloading can lead to over-
heating and increases the rate at which damage
develops inside the tires. In some situations,
this can result in sudden loss of tire pressure.<
Make sure that no liquids are spilled or
leak from their containers in the cargo
area, as this could result in damage to the vehi-
cle.<
Determining loading limit
1.Locate the following statement on your
vehicle's placard
*:
The combined weight of occupants
and cargo should never exceed
XXX kg or YYY lbs. Otherwise, overloading
can result in damage to the vehicle and
unstable driving conditions.<
2.Determine the combined weight of the
driver and passengers that will be riding in
your vehicle.
3.Subtract the combined weight of the driver
and passengers from XXX kilograms or YYY
pounds.
4.The resulting figure equals the available
amount of cargo and luggage load capacity.
For example, if the YYY amount equals
1,400 lbs. and there will be five 150-lb. pas-
sengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is
650 lbs:
1,400 lbs. minus 750 lbs. = 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 calculated
in step 4.
6.If your vehicle will be towing a trailer, part of
the load from your trailer will be transferred
to your vehicle. Consult the manual for
transporting a trailer to determine how this
may reduce the available cargo and luggage
load capacity of your vehicle.

Wheels and tires
208
Wheels and tires
Tire inflation pressures
Information for your safety
It is not merely the tires' service life, but also
driving comfort and, to a great extent, driving
safety that depend on the condition of the tires
and the maintenance of the specified tire pres-
sure.
Check the tire inflation pressure regularly
and correct it, if necessary: at least twice a
month and before starting long trips. If you fail
to observe this precaution you may be driving
on tires with incorrect tire pressures, a condi-
tion that can not only compromise your vehi-
cle's driving stability, but also lead to tire dam-
age and the risk of an accident. Do not drive
with deflated, i.e. flat tires, except when using
run-flat tires. A flat tire will seriously impair your
vehicle's handling and braking response.
Attempts to drive on a flat tire can lead to loss of
control over the vehicle.<
Checking pressure
Only check tire inflation pressure when the
tires are cold. This means after a maximum of
1.25 miles/2 km driving or when the vehicle has
been parked for at least 2 hours. When tires are
warm, the tire inflation pressure is higher.
After correcting the tire inflation pressure,
reset the Tire Pressure Monitor, refer to
page90, or reinitialize the Flat Tire Monitor,
refer to page88.<
Inflation pressure specifications
The tables below provide all the correct inflation
pressures for the specified tire sizes at ambient
temperature.
The inflation pressures apply to the tire
sizes approved and tire brands recom-
mended by BMW; a list of these is available
from your BMW center.<
For correct identification of the right tire infla-
tion pressures, observe the following:>Tire sizes for your vehicle
>Load conditions
>Maximum allowable driving speed
Tire inflation pressures for driving up
to 100 mph or 160 km/h
For normal driving up to 100 mph or 160 km/h
and to achieve optimum driving comfort, adjust
pressures to the respective tire inflation pres-
sures listed on the following pages in the col-
umns for traveling speeds up to a maximum of
100 mph or 160 km/h.
These tire inflation pressures can also be found
on the driver's side door post when the driver's
door is open.
The maximum permissible speed for
these tire pressures is 100 mph or
160 km/h. Do not exceed this speed; otherwise,
tire damage and accidents could occur.<
Tire inflation pressures for driving
above 100 mph or 160 km/h
In order to drive at maximum speeds in
excess of 100 mph or 160 km/h, adjust
pressures to the respective tire inflation pres-
sures listed on the following pages in the col-
umns for traveling speeds including those
exceeding 100 mph or 160 km/h. Otherwise,
tire damage and accidents could occur.<
Observe all national and local maximum speed
limits; otherwise, violations of the laws could
occur.

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Sedan: tire inflation pressures for the 323i, for Canada only
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100 mph / 160 km/hTraveling speeds
including those
exceeding
100 mph / 160 km/h
All pressure specifications in the table are
indicated in psi/kilopascal with cold tires.
Cold = ambient temperature
Without Sport Package:
205/55 R 16 91 H M+S 32/220 36/250 35/240 42/290
225/50 R 16 92 V
225/50 R 16 92 H M+S 32/220 35/240 32/220 39/270
225/45 R 17 91 H M+S
225/45 R 17 91 V32/220 38/260 35/240 42/290
225/45 R 17 94 V M+S XL 32/220 39/270 36/250 44/300
Front: 225/45 R 17 91 V 32/220 - 35/240 -
Rear: 255/40 R 17 94 V - 35/240 - 38/260
Front: 225/40 R 18 88 W 32/220 - 35/240 -
Rear: 255/35 R 18 90 W - 39/270 - 42/290
Front: 225/35 R 19 88 Y XL 36/250 - 36/250 -
Rear: 255/30 R 19 91 Y XL - 44/300 - 44/300
With Sport Package:
205/55 R 16 91 H M+S 32/220 36/250 36/250 44/300
225/50 R 16 92 V
225/50 R 16 92 H M+S32/220 35/240 36/250 44/300
225/45 R 17 91 V
225/45 R 17 91 H M+S32/220 38/260 41/280 48/330
225/45 R 17 94 V M+S XL 32/220 39/270 42/290 49/340
Front: 225/45 R 17 91 V 32/220 - 41/280 -
Rear: 255/40 R 17 94 V - 35/240 - 44/300
Front: 225/40 R 18 88 W 32/220 - 39/270 -
Rear: 255/35 R 18 90 W - 39/270 - 46/320

Wheels and tires
210 Front: 225/35 R 19 88 Y XL 36/250 - 39/270 -
Rear: 255/30 R 19 91 Y XL - 44/300 - 46/320
More details on the permissible load and weights can be found on page257.
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100 mph / 160 km/hTraveling speeds
including those
exceeding
100 mph / 160 km/h
All pressure specifications in the table are
indicated in psi/kilopascal with cold tires.
Cold = ambient temperature

Mobility
211Reference
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Sedan: tire inflation pressures for the 328i
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100 mph / 160 km/hTraveling speeds
including those
exceeding
100 mph / 160 km/h
All pressure specifications in the table are
indicated in psi/kilopascal with cold tires.
Cold = ambient temperature
Without Sport Package:
205/55 R 16 91 H M+S
225/50 R 16 92 V
225/50 R 16 92 H M+S32/220 36/250 33/230 41/280
225/45 R 17 91 H M+S
225/45 R 17 91 V32/220 39/270 36/250 44/300
225/45 R 17 94 V M+S XL 33/230 41/280 38/260 45/310
Front: 225/45 R 17 91 V 32/220 - 36/250 -
Rear: 255/40 R 17 94 V - 35/240 - 39/270
Front: 225/40 R 18 88 W 33/230 - 36/250 -
Rear: 255/35 R 18 90 W - 41/280 - 44/300
Front: 225/40 R 18 88 Y 33/230 - 33/230 -
Rear: 255/35 R 18 90 Y - 41/280 - 41/280
Front: 225/35 R 19 88 Y XL 38/260 - 38/260 -
Rear: 255/30 R 19 91 Y XL - 45/310 - 45/310
With Sport Package:
205/55 R 16 91 H M+S
225/50 R 16 92 H M+S
225/50 R 16 92 V32/220 36/250 38/260 45/310
225/45 R 17 91 H M+S
225/45 R 17 91 V32/220 39/270 38/260 45/310
225/45 R 17 94 V M+S XL 33/230 41/280 44/300 51/350
Front: 225/45 R 17 91 V 32/220 - 38/260 -
Rear: 255/40 R 17 94 V - 35/240 - 45/310
Front: 225/40 R 18 88 W 33/230 - 41/280 -
Rear: 255/35 R 18 90 W - 41/280 - 48/330
Front: 225/40 R 18 88 Y 33/230 - 36/250 -

Wheels and tires
212 Rear: 255/35 R 18 90 Y - 41/280 - 44/300
Front: 225/35 R 19 88 Y XL 38/260 - 41/280 -
Rear: 255/30 R 19 91 Y XL - 45/310 - 48/330
More details on the permissible load and weights can be found on page257.
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100 mph / 160 km/hTraveling speeds
including those
exceeding
100 mph / 160 km/h
All pressure specifications in the table are
indicated in psi/kilopascal with cold tires.
Cold = ambient temperature

Mobility
213Reference
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Sedan: tire inflation pressures for the 328xi
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100 mph / 160 km/hTraveling speeds
including those
exceeding
100 mph / 160 km/h
All pressure specifications in the table are
indicated in psi/kilopascal with cold tires.
Cold = ambient temperature
Without Sport Package:
205/55 R 16 91 H M+S
225/50 R 16 92 H M+S
225/50 R 16 92 V
225/45 R 17 91 H M+S
225/45 R 17 91 W32/220 36/250 35/240 41/280
225/45 R 17 94 V M+S XL 32/220 38/260 35/240 42/290
Front: 225/45 R 17 91 V 32/220 - 35/240 -
Rear: 255/40 R 17 94 V - 33/230 - 38/260
Front: 225/40 R 18 88 W 33/230 - 36/250 -
Rear: 255/35 R 18 90 W - 38/260 - 41/280
Front: 225/35 R 19 88 Y XL 39/270 - 39/270 -
Rear: 255/30 R 19 91 Y XL - 42/290 - 42/290
With Sport Package:
205/55 R 16 91 H M+S
225/50 R 16 92 H M+S
225/45 R 17 91 H M+S32/220 36/250 35/240 41/280
225/50 R 16 92 V
225/45 R 17 91 W32/220 36/250 38/260 45/310
225/45 R 17 94 V M+S XL 32/220 38/260 41/280 48/330
Front: 225/45 R 17 91 V 32/220 - 38/260 -
Rear: 255/40 R 17 94 V - 33/230 - 42/290
Front: 225/40 R 18 88 W 33/230 - 41/280 -
Rear: 255/35 R 18 90 W - 38/260 - 45/310
Front: 225/35 R 19 88 Y XL 39/270 - 42/290 -
Rear: 255/30 R 19 91 Y XL - 42/290 - 45/310
More details on the permissible load and weights can be found on page257.

Wheels and tires
214
Sedan: tire inflation pressures for the 335i
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100 mph / 160 km/hTraveling speeds
including those
exceeding
100 mph / 160 km/h
All pressure specifications in the table are
indicated in psi/kilopascal with cold tires.
Cold = ambient temperature
Without Sport Package:
225/45 R 17 91 H M+S
225/45 R 17 91 W35/240 42/290 39/270 46/320
225/45 R 17 94 V M+S XL 36/250 44/300 41/280 48/330
Front: 225/45 R 17 91 V 35/240 - 39/270 -
Rear: 255/40 R 17 94 V - 38/260 - 42/290
Front: 225/40 R 18 88 W 35/240 - 39/270 -
Rear: 255/35 R 18 90 W - 42/290 - 46/320
Front: 225/40 R 18 88 Y 35/240 - 35/240 -
Rear: 255/35 R 18 90 Y - 42/290 - 42/290
Front: 225/35 R 19 88 Y XL 41/280 - 41/280 -
Rear: 255/30 R 19 91 Y XL - 48/330 - 48/330
With Sport Package:
225/45 R 17 91 H M+S
225/45 R 17 91 W35/240 42/290 42/290 49/340
225/45 R 17 94 V M+S XL 36/250 44/300 44/300 51/350
Front: 225/45 R 17 91 V 35/240 - 42/290 -
Rear: 255/40 R 17 94 V - 38/260 - 46/320
Front: 225/40 R 18 88 W 35/240 - 44/300 -
Rear: 255/35 R 18 90 W - 42/290 - 51/350
Front: 225/40 R 18 88 Y 35/240 - 39/270 -
Rear: 255/35 R 18 90 Y - 42/290 - 46/320
Front: 225/35 R 19 88 Y XL 41/280 - 44/300 -
Rear: 255/30 R 19 91 Y XL - 48/330 - 51/350
More details on the permissible load and weights can be found on page257.