2010 BMW 1 SERIES Owners Manual

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

Refueling
104
Refueling
Always switch off the engine before refu-
eling; otherwise, fuel cannot be added to
the tank and a message will be displayed.<
Take all precautionary measures and
observe all applicable regulations when
handling fuel. Do not carry any spare fuel con-
tainers in your vehicle. They can develop a leak
and cause an explosion or cause a fire in the
event of an accident.<
Fuel filler flap
Opening
1.Open the fuel filler flap. To do so, lightly
press the rear edge.
2.Turn the gas cap counterclockwise.
3.Place the gas cap in the bracket attached to
the fuel filler flap.
Closing
Fit the cap and turn it clockwise until you clearly
hear a click.
Do not pinch the band attached to the
cap; otherwise, the cap cannot be closed
properly and fuel vapors can escape.<
The warning lamp lights up briefly if
the gas cap is loose or missing. If this
occurs, close the cap correctly.
Manually releasing the fuel filler flap
In the event of a malfunction, you can release
the fuel filler flap manually:1.Remove the cover from the right-hand side-
wall of the cargo area.
2.Pull the button with the fuel pump symbol
down.
The fuel filler flap is released.
Observe the following when refueling
When handling fuels, follow the safety
instructions provided at filling stations;
otherwise, there is a risk of personal injury or
property damage.<
When refueling, insert the filler nozzle com-
pletely into the filler pipe. Avoid lifting the filler
nozzle while filling the tank, as that would lead
to
>premature pump shutoff
>reduced efficiency of the fuel-vapor recov-
ery system.
The fuel tank is full when the filler nozzle clicks
off the first time.
Fuel tank capacity
Approx. 14 US gallons/53 liters, including the
reserve capacity of 2.1 US gallons/8 liters.
Refuel as soon as possible once your
cruising range falls below 30 miles/
50 km; otherwise, engine functions are not
ensured and damage can occur.<
Fuel specifications
Do not fill the tank with leaded fuel, as this
would cause permanent damage to the

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Mobility
105
catalytic converter.
Do not fill the tank with E85, i.e. fuel containing
85 % ethanol, nor with FlexFuel. Otherwise, the
engine and fuel supply system will be dam-
aged.<
Required fuel
Super Premium Gasoline/AKI 91
This gasoline is highly recommended.
However, you may also use gasoline with less
AKI. The minimum AKI Rating is:
>128i: 87
>135i: 89
If you use gasoline with this minimum AKI Rat-
ing, the engine may produce knocking sounds
when starting at high outside temperatures.
This has no effect on the engine life.
Do not use any gasoline below the speci-
fied minimum fuel grade. Otherwise, the
engine could be damaged.<
Use high-quality brands
Field experience has indicated significant dif-
ferences in fuel quality: volatility, composition,
additives, etc., among gasolines offered for sale
in the United States and Canada. Fuels contain-
ing up to and including 10Ξ ethanol or other
oxygenates with up to 2.8Ξ oxygen by weight,
that is, 15Ξ MTBE or 3Ξ methanol plus an
equivalent amount of cosolvent, will not void the
applicable warranties with respect to defects in
materials or workmanship.
The use of poor-quality fuels may result in
drivability, starting and stalling problems
especially under certain environmental condi-
tions such as high ambient temperature and
high altitude.
Should you encounter drivability problems
which you suspect could be related to the fuel
you are using, we recommend that you respond
by switching to a recognized high-quality brand
such as gasoline that is advertised as Top Tier
Detergent Gasoline. Failure to comply with these recommendations
may also result in unscheduled maintenance.<

Wheels and tires
106
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
page68, or reinitialize the Flat Tire Monitor,
refer to page66.<
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
100mph or 160km/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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107
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
100mph / 160km/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
More details on the permissible load and weights can be found on page149.
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
More details on the permissible load and weights can be found on page149.

Wheels and tires
108
Convertible: tire inflation pressures for the 128i
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100mph / 160km/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
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
More details on the permissible load and weights can be found on page149.

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109
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
100mph / 160km/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
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
More details on the permissible load and weights can be found on page149.

Wheels and tires
110
Tire identification marks
Knowledge of the labeling on the side of the tire
makes it easier to identify and choose the right
tires.
Tire size
Speed code letter
Q = up to 100 mph or 160 km/h
T = up to 118 mph or 190 km/h
H = up to 131 mph or 210 km/h
V = up to 150 mph or 240 km/h
W = up to 167 mph or 270 km/h
Y = up to 186 mph or 300 km/h
Tire Identification Number
Tires with DOT codes meet the guidelines of
the US Department of Transportation.
DOT code:
Tire age
The manufacturing date of tires is contained in
the tire coding: DOT … 3209 means that the
tire was manufactured in week 32 of 2009.
BMW recommends that you replace all tires
after 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:
Tread wear 200 Traction AA
Temperature A
DOT Quality Grades
Tread wear
Traction AA A B C
Temperature A B C
All passenger car tires must conform to
Federal Safety Requirements in addition
to these grades.<
Tread wear
The tread wear 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 (1γ) times as
well on the government course as a tire graded
100. The relative performance of tires depends
upon the actual conditions of their use, how-
ever, and may depart significantly from the
norm due to variations in driving habits, service
practices and differences in road characteris-
tics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.
Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test sur-
faces of asphalt and concrete. A tire marked C
may have poor traction performance.
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning, or peak traction charac-
teristics.<
Temperature
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate e.g.
Nominal width in mm
Aspect ratio in Ξ
Radial belt construction
Rim diameter in inches
Load rating,
not on ZR tires
Speed code letter, in
front of the R on ZR tires
225/45 R1791 V
e.g.
Manufacturer's
code for tire make
Tire size and
tire design
Tire ageDOT xxxx xxx 3209