2012 BMW 135I tires

Driving tips
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Drive defensively
Avoid unnecessary acceleration and braking
maneuvers. To do so, keep an adequate dis-
tance between you and the vehicle in front of
you. A defensive and smooth driving style
keeps fuel consumption down.
Avoid high engine speeds
Use first gear only for driving off. In second and
higher gears, accelerate without hesitation or
pauses. When accelerating, shift up before
reaching high engine speeds.
When you reach the desired speed, shift into
the highest applicable gear and drive with the
engine speed as low as possible and at a con-
stant speed.
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
Coasting
When approaching a red light, take your foot off
the accelerator and coast to a stop in the high-
est applicable gear.
On a downhill slope, take your foot off the accel-
erator and coast in a suitable gear.
The fuel supply is interrupted when coasting.
Switch off the engine during lengthy
stops
Switch off the engine when stopping for lengthy
periods, e.g. at traffic lights, railroad crossings
or in traffic congestions. You achieve fuel sav-
ings even if standing time is as short as approx.
4seconds.
Switch off functions you do not need at
the moment
Functions such as the air conditioner, seat
heating or rear window defroster draw large
amounts of power and consume additional fuel.
Especially in city traffic and in stop-and-go driv-
ing they have a considerable impact. Therefore,
switch these functions off when they are not
really needed.
Have the vehicle serviced
Have the vehicle serviced regularly to achieve
good economy and a long vehicle life. BMW
recommends having the vehicle serviced at a
BMW center. Also note the BMW service sys-
tem, refer to page221.
General driving notes
Close the trunk lid
Only drive with the trunk closed. Failure to
do so may endanger passengers or other
road users or may damage the vehicle in the
event of an accident or a braking and evasive
maneuver. In addition, exhaust gas may flow
into the passenger compartment.<
If special circumstances make it absolutely nec-
essary to drive with the trunk open:
1.Close all windows and the glass roof.
2.Greatly increase the air volume of the auto-
matic climate control system, refer to
page101.
3.Drive cautiously.
Hot exhaust system
In all vehicles, extremely high tempera-
tures are generated in the exhaust sys-
tem. Do not remove the heat shields installed in
its vicinity, and never apply undercoating to
them. When driving, standing at idle and while
parking, take care to avoid possible contact
between the hot exhaust system and any highly
flammable materials such as hay, leaves, grass,
etc. Such contact could lead to a fire, with the
risk of serious personal injuries and property
damage. Do not touch hot exhaust tail pipes.
Otherwise, there is a risk of burns.<
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

Things to remember when driving
118 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 page213.
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 assis-
tant, refer to page84.
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.
Objects in the movement range of the
pedals
Keep floor mats, carpet, and other objects
out of the movement range of the pedals;
otherwise, they may inhibit the function of the
pedals during driving.
Do not place additional floor mats onto an exist-
ing one or onto other objects.
Only use floor mats that have been approved for
the vehicle and can be appropriately fastened.
Make sure that the floor mats are securely fas-
tened again after they have been removed, e.g.
for cleaning.<
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 page61.
Sport automatic transmission with double
clutch never drive with the transmission in
neutral or with the engine switched off; other-
wise, there will be no engine braking action and
no power assistance to the brakes and steering.
Manual transmission: never drive with the
clutch held down, with the transmission in neu-
tral or with the engine switched off; otherwise,
there will be no engine braking action and no
power assistance to the brakes and steering.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
pedals; otherwise, pedal function could be
impaired.<
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

Driving tips
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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.<
Avoid fluid spills in the cargo area as they
could damage the vehicle.<
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, damage to
the vehicle and unstable driving conditions
may result.<
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-lbs.
passengers in your vehicle, the amount of
available 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.
Load
The permissible load is the sum of the occu-
pants' weights and the weight of the cargo. The
greater the weight of the occupants, the less
cargo/luggage can be transported.

Mobility
This section helps you maintain your car's
mobility by supplying important information
on vital topics including fuels and lubricants,
wheels and tires, service, maintenance and
Roadside Assistance.
Mobility

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
page87, or reinitialize the Flat Tire Monitor,
refer to page85.<
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
>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 pillar 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.

Mobility
209Reference
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Coupe: tire inflation pressures for the 128i
Coupe: tire inflation pressures for the 135i
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
195/55 R 16 87 H M+S 32/220 38/260 35/240 42/290
205/55 R 16 91 H M+S
205/50 R 17 89 H M+S32/220 35/240 35/240 42/290
Front: 205/50 R 17 89 V 32/220 - 36/250 -
Rear: 225/45 R 17 91 V - 35/240 - 44/300
Front: 215/40 R 18 85 Y 32/220 - 35/240 -
Rear: 245/35 R 18 88 Y - 39/270 - 42/290
Compact spare wheel
*:
T 125/80 R 17 99 MTraveling speeds up to a max. of 50 mph/80 km/h
60/420
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
205/50 R 17 89 H M+S 33/230 36/250 38/260 42/290
Front: 215/40 R 18 85 Y 36/250 - 38/260 -
Rear: 245/35 R 18 88 Y - 39/270 - 42/290
Compact spare wheel
*:
T 125/80 R 17 99 MTraveling speeds up to a max. of 50 mph/80 km/h
60/420

Wheels and tires
210
Convertible: tire inflation pressures for the 128i
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 35/240 32/220 39/270
205/50 R 17 89 H M+S 32/220 38/260 35/240 42/290
Front: 205/50 R 17 89 V 32/220 - 35/240 -
Rear: 225/45 R 17 91 V - 36/250 - 41/280
Front: 215/40 R 18 85 Y 35/240 - 35/240 -
Rear: 245/35 R 18 88 Y - 41/280 - 41/280
Compact spare wheel
*:
T 125/80 R 17 99 MTraveling speeds up to a max. of 50 mph/80 km/h
60/420
with Sport Package
205/55 R 16 91 H M+S 32/220 35/240 32/220 39/270
205/50 R 17 89 H M+S 32/220 38/260 35/240 42/290
Front: 205/50 R 17 89 V 32/220 - 39/270 -
Rear: 225/45 R 17 91 V - 36/250 - 46/320
Front: 215/40 R 18 85 Y 35/240 - 38/260 -
Rear: 245/35 R 18 88 Y - 41/280 - 45/310
Compact spare wheel
*:
T 125/80 R 17 99 MTraveling speeds up to a max. of 50 mph/80 km/h
60/420

Mobility
211Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Convertible: tire inflation pressures for the 135i
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
205/50 R 17 89 H M+S 32/220 38/260 36/250 42/290
Front: 215/40 R 18 85 Y 39/270 - 39/270 -
Rear: 245/35 R 18 88 Y - 41/280 - 41/280
Compact spare wheel
*:
T 125/80 R 17 99 MTraveling speeds up to a max. of 50 mph/80 km/h
60/420
with Sport Package
205/50 R 17 89 H M+S 32/220 38/260 36/250 42/290
Front: 215/40 R 18 85 Y 39/270 - 39/270 -
Rear: 245/35 R 18 88 Y - 41/280 - 45/310
Compact spare wheel
*:
T 125/80 R 17 99 MTraveling speeds up to a max. of 50 mph/80 km/h
60/420