Tire pressure BMW 4 SERIES CONVERTIBLE 2014 F33 User Guide

Saving fuelVehicle features and optionsThis chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems.
General information
Your vehicle contains advanced technology for
the reduction of fuel consumption and emis‐
sions.
Fuel consumption depends on a number of dif‐
ferent factors.
Carrying out certain measures, such as a mod‐
erate driving style and regular maintenance,
can influence fuel consumption and the envi‐
ronmental impact.
Remove unnecessary cargoAdditional weight increases fuel consumption.
Remove attached parts
following use
Attached parts on the vehicle impair the aero‐
dynamics and increase the fuel consumption.
Closing the windows
Open windows increase air resistance and
therefore lead to greater fuel consumption.Tires
General information
Tires can affect fuel consumption in various
ways, e.g., tire size may influence fuel con‐
sumption.
Check the tire inflation pressure
regularly
Check and, if needed, correct the tire inflation
pressure at least twice a month and before
starting on a long trip.
Low tire inflation pressure increases rolling re‐
sistance and thus raises fuel consumption and
tire wear.
Drive away immediately
Do not wait for the engine to warm-up while
the vehicle remains stationary. Start driving
right away, but at moderate engine speeds.
This is the quickest way of warming the cold
engine up to operating temperature.
Look well ahead when
driving
Avoid unnecessary acceleration and braking.
By maintaining a suitable distance to the vehi‐
cle driving ahead of you.
Driving smoothly and proactively reduces fuel
consumption.
Avoid high engine speeds
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
Use 1st gear to get the vehicle moving. Start‐
ing with the 2nd gear, accelerate rapidly. WhenSeite 174Driving tipsSaving fuel174
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Wheels and tiresVehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems.
Tire inflation pressure
Safety information
The tire characteristics and tire inflation pres‐
sure influence the following:▷The service life of the tires.▷Road safety.▷Driving comfort.
Checking the tire inflation pressure
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.◀
Tires have a natural, consistent loss of tire in‐
flation pressure.
Tires heat up while driving, and the tire infla‐
tion pressure increases along with the tire's
temperature. The tire inflation pressure speci‐
fications relate to cold tires or tires with the
ambient temperature.
Only check the tire inflation pressure when the
tires are cold. This means after driving no more
than 1.25 miles/2 km or when the vehicle has
been parked for at least 2 hours.
The displays of inflation devices may under-
read by up to 1.45 psi/0.1 bar.
For Flat Tire Monitor: after correcting the tire
inflation pressure, reinitialize the Flat Tire
Monitor.
For Tire Pressure Monitor: after correcting the
tire inflation pressure, reset the Tire Pressure
Monitor.
Tire inflation pressure specifications
The tire inflation pressure table, refer to
page 189, contains all tire inflation pressure
specifications for the specified tire sizes at the
ambient temperature. Tire inflation pressure
specifications apply to approved tire sizes and
recommended tire brands. This information
can be obtained from your service center.
To identify the correct tire inflation pressure,
please note the following:▷Tire sizes of your vehicle.▷Maximum permitted driving speed.
Tire inflation pressures up to
100 mph/160 km/h
For speeds of up to 100 mph/160 km/h and for
optimum driving comfort, note the pressure
values in the tire inflation pressure table, refer
to page 189, and adjust as necessary.
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These pressure values can also be found on
the tire inflation pressure label on the driver's
door pillar.
Maximum permissible speed
Do not exceed 100 mph/160 km/h; other‐
wise, tire damage and accidents may result.◀
Tire inflation pressure values up to
100 mph/160 km/h
428i, 428i xDrive
Tire sizePressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
225/50 R 17 94 H
M+S RSC
225/50 R 17 94 V
M+S A/S RSC
225/45 R 18 91 V
M+S A/S RSC
225/45 R 18 91 Y
RSC
225/45 R 18 95 V
M+S XL RSC
2.2 / 32 2.7 / 39
225/40 R 19 93 V
M+S XL A/S RSC
2.5 / 36 3.0 / 44
Tire sizePressure specifications
in bar/PSI
Front: 225/45 R 18
91 Y RSC
Rear: 255/40 R 18
95 Y RSC
2.2 / 32
-
-
2.4 / 35
Front: 225/40 R 19
89 Y RSC
Rear: 255/35 R 19
92 Y RSC
2.4 / 35
-
-
2.7 / 39
Front: 225/35 R 20
90 Y XL RSC
Rear: 255/30 R 20
92 Y XL RSC
2.6 / 38
-
-
3.1 / 45
Emergency wheel:
T 135/80 R 17 102
M
Speed up to a max. of
50 mph / 80 km/h
4.2 / 60
435i, 435i xDrive
Tire sizePressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
225/50 R 17 94 H
M+S RSC
225/45 R 18 91 V
M+S A/S RSC
225/45 R 18 91 Y
RSC
225/45 R 18 95 V
M+S XL RSC
2.2 / 32 2.7 / 39
225/40 R 19 93 V
M+S XL A/S RSC
2.5 / 36 3.0 / 44
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Wheels and tiresMobility
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Tire sizePressure specifications
in bar/PSIFront: 225/45 R 18
91 Y RSC
Rear: 255/40 R 18
95 Y RSC2.2 / 32
--
2.4 / 35Front: 225/40 R 19
89 Y RSC
Rear: 255/35 R 19
92 Y RSC2.4 / 35
--
2.7 / 39Front: 225/35 R 20
90 Y XL RSC
Rear: 255/30 R 20
92 Y XL RSC2.7 / 39
--
3.2 / 46Emergency wheel:
T 135/80 R 17 102
MSpeed up to a max. of
50 mph / 80 km/h
4.2 / 60
Tire inflation pressures at max.
speeds above 100 mph/160 km/h
Speeds above 100 mph/160 km/h
In order to drive at maximum speeds in
excess of 100 mph/160 km/h, please observe,
and, if necessary, adjust tire pressures for
speeds exceeding 100 mph/160 km/h from the
relevant table on the following pages. Other‐
wise tire damage and accidents could occur.◀
Tire inflation pressure values over
100 mph/160 km/h
428i, 428i xDrive Without high-speed tuning feature
Tire sizePressure specifications
in bar/PSISpecifications in
bar/PSI with cold
tires225/50 R 17 94 H
M+S RSC
225/50 R 17 94 V
M+S A/S RSC
225/45 R 18 91 V
M+S A/S RSC
225/45 R 18 91 Y
RSC2.6 / 383.1 / 45225/45 R 18 95 V
M+S XL RSC
225/40 R 19 93 V
M+S XL A/S RSC2.9 /423.4 / 49Front: 225/45 R 18
91 Y RSC
Rear: 255/40 R 18
95 Y RSC2.6 / 38
--
2.8 / 41Front: 225/40 R 19
89 Y RSC
Rear: 255/35 R 19
92 Y RSC2.8 / 41
--
3.1 / 45Front: 225/35 R 20
90 Y XL RSC
Rear: 255/30 R 20
92 Y XL RSC3.0 / 44
--
3.5 / 51Emergency wheel:
T 135/80 R 17 102
MSpeed up to a max. of
50 mph / 80 km/h
4.2 / 60
With high-speed tuning feature
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Tire sizePressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
225/50 R 17 94 H
M+S RSC
225/45 R 18 91 Y
RSC
2.6 / 38 3.1 / 45
225/45 R 18 95 V
M+S XL RSC
2.9 /42 3.4 / 49
Front: 225/45 R 18
91 Y RSC
Rear: 255/40 R 18
95 Y RSC
2.6 / 38
-
-
2.8 / 41
Front: 225/40 R 19
89 Y RSC
Rear: 255/35 R 19
92 Y RSC
2.8 / 41
-
-
3.1 / 45
Front: 225/35 R 20
90 Y XL RSC
Rear: 255/30 R 20
92 Y XL RSC
3.0 / 44
-
-
3.5 / 51
Emergency wheel:
T 135/80 R 17 102
M
Speed up to a max. of
50 mph / 80 km/h
4.2 / 60
435i, 435i xDrive
Without high-speed tuning feature
Tire sizePressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
225/50 R 17 94 H
M+S RSC
225/45 R 18 91 V
M+S A/S RSC
225/45 R 18 91 Y
RSC
2.6 / 38 3.1 / 45
225/45 R 18 95 V
M+S XL RSC
225/40 R 19 93 V
M+S XL A/S RSC
2.9 /42 3.4 / 49
Front: 225/45 R 18
91 Y RSC
Rear: 255/40 R 18
95 Y RSC
2.6 / 38
-
-
2.8 / 41
Front: 225/40 R 19
89 Y RSC
Rear: 255/35 R 19
92 Y RSC
2.8 / 41
-
-
3.1 / 45
Front: 225/35 R 20
90 Y XL RSC
Rear: 255/30 R 20
92 Y XL RSC
3.0 / 44
-
-
3.5 / 51
Emergency wheel:
T 135/80 R 17 102
M
Speed up to a max. of
50 mph / 80 km/h
4.2 / 60
With high-speed tuning feature
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Tire sizePressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
225/45 R 18 91 Y
RSC
225/50 R 17 94 H
M+S RSC
2.6 / 383.1 / 45225/45 R 18 95 V
M+S XL RSC
2.9 /423.4 / 49Front: 225/45 R 18
91 Y RSC
Rear: 255/40 R 18
95 Y RSC
2.6 / 38
-
-
2.8 / 41
Front: 225/40 R 19
89 Y RSC
Rear: 255/35 R 19
92 Y RSC
2.8 / 41
-
-
3.1 / 45
Front: 225/35 R 20
90 Y XL RSC
Rear: 255/30 R 20
92 Y XL RSC
3.0 / 44
-
-
3.5 / 51
Emergency wheel:
T 135/80 R 17 102
M
Speed up to a max. of
50 mph / 80 km/h
4.2 / 60
Tire identification marks
Tire size
245/45 R 18 96 Y
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245: nominal width in mm
45: aspect ratio in %
R: radial tire code
18: rim diameter in inches
96: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
Speed letter
Q = up to 100 mph, 160 km/h
R = up to 106 mph, 170 km/h
S = up to 112 mph, 180 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

Retreaded tires
Possibly substantial variations in the de‐
sign and age of the tire casing structures can
limit service life and have a negative impact on
road safety.◀
Winter tires
Winter tires are recommended for operating on
winter roads.
Although so-called all-season M+S tires pro‐
vide better winter traction than summer tires, they do not provide the same level of perform‐
ance as winter tires.
Maximum speed of winter tires If the maximum speed of the vehicle is higher
than the permissible speed for the winter tires,
then a respective symbol is displayed in your
field of vision. You can obtain this sign from the
tire specialist or from your service center.
Maximum speed for winter tires
Do not exceed the maximum speed for
the respective winter tires; otherwise, tire dam‐
age and accidents can occur.◀
Run-flat tires If you are already using run-flat tires, for your
own safety you should replace them only with
the same kind. No spare tire is available in the
case of a flat tire. Your service center will be
glad to advise you.
Rotating wheels between axlesDifferent wear patterns can occur on the frontand rear axles depending on individual driving
conditions. The tires can be rotated between
the axles to achieve even wear. Your service
center will be glad to advise you. After rotating,
check the tire pressure and correct if needed.
Rotating the tires is not permissible on vehi‐
cles with different tire sizes on the front and
rear axles, i.e. when using different types of
tires.Storage
Store wheels and tires in a cool, dry place with
as little exposure to light as possible.
Always protect tires against all contact with oil,
grease and fuels.
Do not exceed the maximum tire inflation pres‐
sure indicated on the side wall of the tire.
Run-flat tires Label
RSC label on the tire sidewall.
The wheels consist of tires that are self-sup‐
porting, to a limited degree, and possibly spe‐
cial rims.
The support of the sidewall allows the tire to
remain drivable to a restricted degree in the
event of a tire inflation pressure loss.
Follow the instructions for continued driving
with a flat tire.
Changing run-flat tires
For your own safety, only use run-flat tires. No
spare tire is available in the case of a flat tire.
Your service center will be glad to advise you.
Snow chains
Fine-link snow chains
Only certain types of fine-link snow chains
have been tested by the manufacturer of the
vehicle, classified as road-safe and approved.
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Information about the approved snow chains
are available from the service center.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:▷225/50 R 17.▷225/45 R 18.
Follow the snow chain manufacturer's instruc‐
tions.
Make sure that the snow chains are always
sufficiently tight. Retighten as needed accord‐
ing to the chain manufacturer's instructions.
Do not initialize the Flat Tire Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
Do not initialize the Tire Pressure Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
When driving with snow chains, briefly activate
Dynamic Traction Control if needed.
Maximum speed with snow chains Do not exceed a speed of 30 mph/50 km/hwhen using snow chains.
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These lights are made using LED technology.
Contact your service center in the event of a
malfunction.
Changing wheels
Hints When using run-flat tires or sealants, a tire
does not need to be changed immediately in
the event of pressure loss due to a flat tire.
Which is why no spare tire is available.
The tools for changing wheels are available as
accessories from your service center.
Jacking points for the vehicle jack
The jacking points for the vehicle jack are lo‐
cated at the positions shown.
Vehicle battery Maintenance
The battery is maintenance-free.
The added amount of acid is sufficient for the
service life of the battery.
Further information about the battery can be
obtained from your service center.
Battery replacement
Use approved vehicle batteries only
Only use vehicle batteries that have been
approved for your vehicle by the manufacturer;
otherwise, the vehicle could be damaged and
systems or functions may not be fully availa‐
ble.◀
After a battery replacement, have the battery registered on the vehicle by your service cen‐
ter to ensure that all comfort features are fully
available and that any Check Control mes‐
sages of these comfort features are no longer
displayed.
Charging the battery
Note Do not connect charging devices to the
12 volt socket in the vehicle
Do not connect battery chargers to the fac‐
tory-installed 12 volt sockets in the vehicle as
this may damage the vehicle battery due to an
increased power consumption.◀
General information Make sure that the battery is always suffi‐
ciently charged to guarantee that the battery
remains usable for its full service life.
The battery may need to be charged in the fol‐
lowing cases:▷When making frequent short-distance
drives.▷If the vehicle is not used for prolonged pe‐
riods, longer than a month.
Starting aid terminals
In the vehicle, only charge the battery via the
starting aid terminals, refer to page 217, in the
engine compartment with the engine off.
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CareVehicle features and optionsThis chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems.
Car washes
General information
Regularly remove foreign objects such as
leaves in the area below the windshield when
the hood is raised.
Wash your vehicle frequently, particularly in
winter. Intense soiling and road salt can dam‐
age the vehicle.
Hints Steam jets or high-pressure washers
When using steam jets or high-pressure
washers, hold them a sufficient distance away
and use a maximum temperature of
140 ℉/60 ℃.
Holding them too close or using excessively
high pressures or temperatures can cause
damage or preliminary damage that may then
lead to long-term damage.
Follow the user's manual for the high-pressure
washer.◀
Cleaning sensors/cameras/hardtop with
high-pressure washers
When using high-pressure washers, do not
spray the seals of the lowerable hardtop, sen‐
sors and cameras external to the vehicle, e.g.,
Park Distance Control, for extended periods oftime and only from a distance of at least
12 in/30 cm.◀
Automatic car washes
Hints Do not use high pressure washing sys‐
tems
With washing systems operating at high pres‐
sures and nozzle positions close to the win‐
dows, drops of water can penetrate.◀▷Give preference to cloth car washes or
those that use soft brushes in order to
avoid paint damage.▷Make sure that the wheels and tires are not
damaged by the transport mechanisms.▷Fold in the exterior mirrors; otherwise, they
may be damaged, depending on the width
of the vehicle.▷Deactivate the rain sensor, refer to
page 70, to avoid unintentional wiper acti‐
vation.▷In some cases, an unintentional alarm can
be triggered by the interior motion sensor
of the alarm system. Follow the instruc‐
tions on avoiding an unintentional alarm,
refer to page 44.
Guide rails in car washes
Avoid car washes with guide rails higher
than 4 in/10 cm; otherwise, the vehicle body
could be damaged.◀
Before driving into a car wash In order to ensure that the vehicle can roll in a
car wash, take the following steps:
Steptronic transmission:
1.Drive into the car wash.2.Engage selector lever position N.Seite 220MobilityCare220
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