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Voice operationGeneral information
Vehicles equipped with the voice activation
system: operation, refer to page 25.
Vehicles not equipped with the voice activation
system: depending on the equipment, the mo‐
bile phone can be voice operated as described
below.
The list of short commands in the Owner's
Manual does not apply to this type of voice op‐
eration.
The concept▷The mobile phone can be operated without
taking your hands from the steering wheel.▷In many cases, the entries are accompa‐
nied by announcements or questions.▷›...‹ Verbal instructions to use with the voice
operation system.▷››...‹‹ Identifies the answers generated by
the voice operation system.
Using voice activation
Activating the voice activation system
1. Press the button on the steering
wheel.2.Say the command.
Terminating the voice activation
system
Press the button on the steering
wheel or ›Cancel‹.
Possible commands
Having possible commands read aloud Press the button on the steering
wheel.
›Help‹.
Possible commands are announced.
The digits from zero to nine are recognized.
The digits can be spoken separately or com‐
bined in a sequence to accelerate the entry.
Using alternative commands
The system often recognizes a number of dif‐
ferent commands to run a function; for in‐
stance:
›Dial name‹ or ›Name‹
Example: dialing a phone number1. Press the button on the steering
wheel.2.›Dial number‹
The system says: »Please say the number
«.3.For instance, ›123 456 790‹
The system says: »123 456 790. Con‐
tinue?«.4.›Dial‹
The system says: »Dialing number«.
Calling
Dialing a phone number
1.›Dial number‹2.Say the phone number.3.›Dial‹
Correcting the phone number The sequence of digits can be deleted after
the system has repeated the digits.
›Correct number‹
The command can be repeated as often as
necessary.
Deleting a phone number ›Delete‹
All digits entered up to that point are deleted.
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Mobility
In order to always ensure your mobility, you will find important information on operating fluids,wheels and tires, maintenance and Roadside Assistance in the following.Online Edition for Part no. 01 40 2 911 269 - VI/13
Page 236 of 299

Wheels and tiresVehicle equipment
This chapter describes all series equipment as
well as country-specific and special equipment
offered for this model series.Therefore, it also
describes equipment that may not be found in
your vehicle, for instance due to the selected
special equipment or the country version. This
also applies to safety-related functions and
systems.
Tire inflation pressure
Safety information
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.
Checking the pressure Only check the 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 the
tires are warm, the tire inflation pressure is
higher.
Check the tire inflation pressure regularly
Regularly check the tire inflation pres‐
sure and correct it as needed: at least twice a
month and before a long trip. If you fail to ob‐
serve this precaution, you may be driving on
tires with incorrect tire pressures, a condition
that may not only compromise your vehicle's
driving stability, but also lead to tire damage
and the risk of an accident.◀
After adjusting the tire inflation pressure, reset
the Tire Pressure Monitor, refer to page 93, or
reinitialize the Flat Tire Monitor, refer to
page 91.Pressure specifications
The tables below provide all the correct infla‐
tion pressures for the specified tire sizes at
ambient temperature.
The inflation pressures apply to the tire sizes
approved and tire brands recommended by
BMW; a list of these is available from your
service center.
For correct identification of the right tire infla‐
tion pressures, observe the following:▷Tire sizes of your vehicle.▷Maximum allowable driving speed.
Tire inflation pressures for driving up
to 100 mph or 160 km/h
For normal driving up to 100 mph/160 km/h,
adjust pressures to the respective tire inflation
pressures listed on the following pages in the
column for traveling speeds up to 100 mph/
160 km/h to achieve optimum driving comfort.
These tire inflation pressures can also be
found on the driver's side door pillar when the
driver's door is open.
Do not exceed the maximum permissible
speed
The maximum permissible speed for these tire
pressures is 100 mph/160 km/h. Do not ex‐
ceed this speed; otherwise, tire damage and
accidents may occur.◀
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Tire inflation pressures for driving
above 100 mph or 160 km/h
Adjust the tire inflation pressures
To drive at maximum speeds in excess of
100 mph/160 km/h, adjust pressures to the re‐
spective tire inflation pressures listed on the
following pages in the column for travelingspeeds including those exceeding 100 mph or
160 km/h. Otherwise, tire damage and acci‐
dents could occur.◀
Observe all national and local maximum speed
limits; otherwise, violations of the laws could
occur.
Tire inflation pressures X1 sDrive28i
Tire inflation pressure values up to 100 mph/160 km/h
Tire sizePressure specifications in
bar/PSIAll pressure specifications in the table are indicated in bar/PSI with
cold tires.
Cold = ambient temperature225/50 R 17 94 H M+S A/S RSC
225/50 R 17 94 V RSC
225/50 R 17 94 H M+S RSC2.2/322.6/38225/45 R 18 91 V M+S A/S RSC
225/45 R 18 91 V RSC
225/45 R 18 91 H M+S RSC2.4/352.8/41Front: 225/45 R 18 91 V RSC
Rear: 255/40 R 18 95 V RSC2.4/35
--
2.6/38Front: 225/40 R 19 89 W RSC
Rear: 255/35 R 19 92 W RSC2.6/38
--
2.8/41Compact wheel:
T 135/80 R 17 102 MSpeeds of up to 50 mph/
80 km/h
4.2/60
Tire inflation pressure values over 100 mph/160 km/h
Without high-speed tuning featureSeite 233Wheels and tiresMobility233
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Tire sizePressure specifications in
bar/PSIAll pressure specifications in the table are indicated in bar/PSI with
cold tires.
Cold = ambient temperature225/50 R 17 94 H M+S A/S RSC
225/45 R 18 91 V M+S A/S RSC
225/50 R 17 94 V RSC
225/45 R 18 91 V RSC
225/50 R 17 94 H M+S RSC
225/45 R 18 91 H M+S RSC2.4/352.9/42Front: 225/45 R 18 91 V RSC
Rear: 255/40 R 18 95 V RSC2.4/35
--
2.9/42Front: 225/40 R 19 89 W RSC
Rear: 255/35 R 19 92 W RSC2.6/38
--
2.9/42Compact wheel:
T 135/80 R 17 102 MSpeeds of up to 50 mph/
80 km/h
4.2/60With high-speed tuning feature Tire sizePressure specifications in
bar/PSIAll pressure specifications in the table are indicated in bar/PSI with
cold tires.
Cold = ambient temperature225/50 R 17 94 V RSC
225/50 R 17 94 H M+S RSC2.4/352.9/42225/45 R 18 91 W RSC
225/45 R 18 91 H M+S RSC2.6/383.1/45Front: 225/45 R 18 91 V RSC
Rear: 255/40 R 18 95 V RSC2.6/38
--
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Tire sizePressure specifications in
bar/PSIFront: 225/40 R 19 89 W RSC
Rear: 255/35 R 19 92 W RSC2.8/41
--
3.1/45Compact wheel:
T 135/80 R 17 102 MSpeeds of up to 50 mph/
80 km/h
4.2/60
Tire inflation pressures X1 xDrive28i/X1 xDrive35i
Tire inflation pressure values up to 100 mph/160 km/h
Tire sizePressure specifications in
bar/PSIAll pressure specifications in the table are indicated in bar/PSI with
cold tires.
Cold = ambient temperature225/50 R 17 94 H M+S A/S RSC
225/50 R 17 94 H RSC
225/50 R 17 94 H M+S RSC2.2/322.6/38225/45 R 18 91 V M+S A/S RSC
225/45 R 18 91 V RSC
225/45 R 18 91 H M+S RSC2.4/352.8/41Front: 225/45 R 18 91 V RSC
Rear: 255/40 R 18 95 V RSC2.4/35
--
2.6/38Front: 225/40 R 19 89 W RSC
Rear: 255/35 R 19 92 W RSC2.6/38
--
2.8/41Compact wheel:
T 135/80 R 17 102 MSpeeds of up to 50 mph/
80 km/h
4.2/60
Tire inflation pressure values over 100 mph/160 km/h
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Tire sizePressure specifications in
bar/PSIAll pressure specifications in the table are indicated in bar/PSI with
cold tires.
Cold = ambient temperature225/50 R 17 94 H M+S A/S RSC
225/50 R 17 94 H RSC
225/50 R 17 94 H M+S RSC2.4/352.9/42225/45 R 18 91 V M+S A/S RSC
225/45 R 18 91 V RSC
225/45 R 18 91 H M+S RSC2.6/383.1/45Front: 225/45 R 18 91 V RSC
Rear: 255/40 R 18 95 V RSC2.6/38
--
2.9/42Front: 225/40 R 19 89 W RSC
Rear: 255/35 R 19 92 W RSC2.6/38
--
2.9/42Compact wheel:
T 135/80 R 17 102 MSpeeds of up to 50 mph/
80 km/h
4.2/60With high-speed tuning feature Tire sizePressure specifications in
bar/PSIAll pressure specifications in the table are indicated in bar/PSI with
cold tires.
Cold = ambient temperature225/50 R 17 94 V RSC
225/50 R 17 94 H M+S RSC2.6/383.0/44225/45 R 18 91 W RSC
225/45 R 18 91 H M+S RSC2.8/413.2/46Front: 225/45 R 18 91 V RSC
Rear: 255/40 R 18 95 V RSC2.8/41
--
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Tire sizePressure specifications in
bar/PSIFront: 225/40 R 19 89 W RSC
Rear: 255/35 R 19 92 W RSC3.0/44
--
3.2/46Compact wheel:
T 135/80 R 17 102 MSpeeds of up to 50 mph/
80 km/h
4.2/60Tire identification marks
Knowledge of the labeling on the side of the
tire makes it easier to identify and choose the
right tires.
Tire size
Example: 225/45 R 17 91 V
225: nominal width in mm
45: aspect ratio in %
R: radial tire code
17: rim diameter in inches
91: load rating, not for ZR tires
V: speed rating, before the R on ZR tires
Speed letter
Q = up to 100 mph/160 km/h
T = up to 118 mph/190 km/h
H = up to 131 mph/210 km/h
V = up to 150 mph/240 km/h
W = up to 167 mph/270 km/h
Y = up to 186 mph/300 km/h
Tire Identification Number Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
DOT code:
DOT xxxx xxx 2313
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
2313: tire ageTire age
The tire manufacturing date is contained in the
tire identification mark: DOT ... 2313 means
that the tire was manufactured in the
week 23 of 2013.
BMW recommends that you replace all tires af‐
ter 6 years at most, even if some tires may last
for 10 years.
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
DOT Quality Grades Treadwear
Traction AA A B C
Temperature A B C
Conform to Federal Safety Requirements
All passenger car tires must conform to
Federal Safety Requirements in addition to
these grades.◀
Treadwear The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov‐
ernment test course. For example, a tire
graded 150 would wear one and one-half
(1 1/2) times as well on the government course
as a tire graded 100. The relative performanceSeite 237Wheels and tiresMobility237
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