2014 BMW 228ICOUPE wheel

Switching the system on/off
Switching off Press the left button for the minimum
speed.
Switching on
Press any button except▷Rear window defroster.▷Seat heating.
Microfilter/activated-charcoal filter
In external and recirculated air mode the mi‐
crofilter/activated charcoal filter filters dust,
pollen, and gaseous pollutants out of the air.
This filter should be replaced during scheduled
maintenance, refer to page 181, of your vehi‐
cle.
Ventilation
Front ventilation
▷Lever for changing the air flow direction,
arrow 1.▷Thumbwheels for opening and closing the
vents continuously, arrows 2.▷Thumbwheel to vary the temperature, ar‐
row 3.
Toward blue: colder.
Toward red: warmer.Adjusting the ventilation▷Ventilation for cooling:
Adjust the vent to direct the air in your di‐
rection, such as if the vehicle interior is hot
from the sun.▷Draft-free ventilation:
Adjust the vent to let the air flow past you.
Ventilation in the rear
▷Thumbwheel for continuous opening and
closing of the vents, arrow 1.▷Thumbwheel to vary the temperature, ar‐
row 2.
Toward blue: colder.
Toward red: warmer.▷Lever for changing the air flow direction,
arrow 3.
Parked-car ventilation
The concept The parked-car ventilation ventilates the vehi‐
cle interior and lowers its temperature, if nec‐
essary.
The system can be switched on and off at any
external temperature, either directly or by us‐
ing two preset switch-on times. It remains
switched on for 30 minutes.
Open the vents to allow air to flow out.
Seite 132ControlsClimate control132
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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 2 924 974 - X/13

Wheels and tiresVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equip‐
ment is also described that is not available in a
vehicle, e. g., because of the selected optional
equipment or country variant. This also applies
for 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 pressure
Tires have a natural, consistent loss of pres‐
sure.
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 heat up during driving, and the tire infla‐
tion pressure increases along with the temper‐
ature of the tire. The tire inflation pressure
specifications 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.
After correcting the tire inflation pressure:▷Reinitialize the Flat Tire Monitor.▷Reinitialize the Tire Pressure Monitor.
Pressure specifications The tire inflation pressure table, refer to
page 167, contains all pressure specifications
for the specified tire sizes at the ambient tem‐
perature. Pressure specifications apply to ap‐
proved 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 167, and adjust as necessary.
These pressure values can also be found on
the tire inflation pressure label on the driver's
door pillar.
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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
228iTire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires225/45 R 17 91 H
M+S RSC2.2 / 322.2 / 32205/50 R 17 89
V M+S A/S RSC
205/50 R 17 89 H
M+S RSC
225/40 R 18 92 V
M+S XL RSC
225/40 R 18 92 V
M+S XL A/S RSC2.2 / 322.5 / 36Front: 225/45
R 17 91 W RSC
Rear: 245/40 R 17
91 W RSC2.2 / 32
--
2.2 / 32Front: 225/40
R 18 88 Y RSC
Rear: 245/35 R 18
88 Y RSC2.2 / 32
--
2.6 / 38Tire sizePressure specifications in
bar/PSIFront: 225/35
R 19 88 Y XL RSC
Rear: 245/30 R 19
89 Y XL RSC2.5 / 36
--
2.8/41Compact wheel
T 125/80 R 17 99
MSpeed up to a max. of
50 mph / 80 km/h
4.2 / 60
M235i
Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires225/40 R 18 92 V
M+S XL A/S RSC
205/50 R 17 89 H
M+S RSC
225/45 R 17 91 H
M+S RSC
225/40 R 18 92 V
M+S XL RSC2.2 / 322.6 / 38Front: 225/40 R
18 88 Y Std
Rear: 245/35 R 18
92 Y Std2.2 / 32
--
2.6 / 38Front: 225/40
R 18 88 Y RSC
Rear: 245/35 R 18
88 Y RSC2.2 / 32
--
2.6 / 38Seite 167Wheels and tiresMobility167
Online Edition for Part no. 01 40 2 924 974 - X/13

Tire sizePressure specifications in
bar/PSIFront: 225/35
R 19 88 Y XL RSC
Rear: 245/30 R 19
89 Y XL RSC2.5 / 36
--
2.8 / 41Compact wheel
T 125/80 R 17 99
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
228i
Without high-speed tuning feature
Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires225/45 R 17 91 H
M+S RSC2.2 / 322.6 / 38Tire sizePressure specifications in
bar/PSI205/50 R 17 89
V M+S A/S RSC
225/40 R 18 92 V
M+S XL A/S RSC
205/50 R 17 89 H
M+S RSC
225/40 R 18 92 V
M+S XL RSC2.4 / 352.8 / 41Front: 225/45
R 17 91 W RSC
Rear: 245/40 R 17
91 W RSC2.2 / 32
--
2.4 / 35Front: 225/40
R 18 88 Y RSC
Rear: 245/35 R 18
88 Y RSC2.2 / 32
--
2.6 / 38Front: 225/35
R 19 88 Y XL RSC
Rear: 245/30 R 19
89 Y XL RSC2.5 / 36
--
2.8/41Compact wheel
T 125/80 R 17 99
MSpeed up to a max. of
50 mph / 80 km/h
4.2 / 60
With high-speed tuning feature
Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires225/45 R 17 91
H M+S RSC2.5 / 362.9 /42Seite 168MobilityWheels and tires168
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Tire sizePressure specifications in
bar/PSI205/50 R 17 89
H M+S RSC
225/40 R 18 92
V M+S XL RSC2.6 / 383.1 / 45Front: 225/45
R 17 91 W RSC
Rear: 245/40
R 17 91 W RSC2.5 / 36
--
3.0 /44Front: 225/40
R 18 88 Y RSC
Rear: 245/35
R 18 88 Y RSC2.4 / 35
--
2.9 /42Front: 225/35
R 19 88 Y XL
RSC
Rear: 245/30
R 19 89 Y XL
RSC2.8 / 41
--
3.2/ 46Compact wheel
T 125/80 R 17
99 MSpeed up to a max. of
50 mph / 80 km/h
4.2 / 60
M235i Without high-speed tuning feature
Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires225/40 R 18 92 V
M+S XL A/S RSC
205/50 R 17 89 H
M+S RSC
225/45 R 17 91 H
M+S RSC
225/40 R 18 92 V
M+S XL RSC2.5 / 362.8 / 41Front: 225/40 R
18 88 Y Std
Rear: 245/35 R 18
92 Y Std2.2 / 32
--
2.6 / 38Front: 225/40
R 18 88 Y RSC
Rear: 245/35 R 18
88 Y RSC2.2 / 32
--
2.6 / 38Front: 225/35
R 19 88 Y XL RSC
Rear: 245/30 R 19
89 Y XL RSC2.5 / 36
--
2.8/ 41Compact wheel
T 125/80 R 17 99
MSpeed up to a max. of
50 mph / 80 km/h
4.2 / 60
With high-speed tuning feature
Seite 169Wheels and tiresMobility169
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Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires205/50 R 17 89 H
M+S RSC
225/45 R 17 91 H
M+S RSC
225/40 R 18 92 V
M+S XL RSC2.7 / 393.1 / 45Front: 225/40 R
18 88 Y Std
Rear: 245/35 R
18 92 Y Std2.5 / 36
--
2.9 / 42Front: 225/40
R 18 88 Y RSC
Rear: 245/35
R 18 88 Y RSC2.5 / 36
--
2.9 / 42Front: 225/35
R 19 88 Y XL
RSC
Rear: 245/30
R 19 89 Y XL
RSC2.9 /42
--
3.2/ 46Compact wheel
T 125/80 R 17 99
MSpeed up to a max. of
50 mph / 80 km/h
4.2 / 60
Tire identification marks
Tire size 245/45 R 18 96 Y
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
Tire Identification Number
DOT code: DOT xxxx xxx 1013
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
1013: tire age
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
Tire age
DOT … 1013: the tire was manufactured in the
10th week 2013.
Recommendation
Regardless of wear, replace tires at least every
6 years.
Uniform Tire Quality GradingQuality 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 CSeite 170MobilityWheels and tires170
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All passenger car tires must conform to Fed‐
eral Safety Requirements in addition to these
grades.
TreadwearThe 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 g,
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, however, and may depart signifi‐
cantly from the norm due to variations in driv‐
ing habits, service practices and differences in
road characteristics 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 surfaces 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, cornering,
hydroplaning, or peak traction characteristics.
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
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the ma‐
terial of the tire to degenerate and reduce tire
life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds
to a level of performance which all passenger
car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades Band
A represent higher levels of performance onthe laboratory test wheel than the minimum re‐
quired by law.
Temperature grade for this tire
The temperature grade for this tire is es‐
tablished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla‐
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
possible tire failure.
If necessary, have the vehicle towed.◀
RSC – Run-flat tires
Run-flat tires, refer to page 174, are labeled
with a circular symbol containing the letters
RSC marked on the sidewall.
M+S
Winter and all-season tires with better cold
weather performance than summer tires.
Tire tread
Summer tires Do not drive with a tire tread depth of less than
0.12 in/3 mm.
There is an increased danger of hydroplaning if
the tread depth is less than 0.12 in/3 mm.
Winter tires
Do not drive with a tire tread depth of less than
0.16 in/4 mm.
Below a tread depth of 0.16 in/4 mm, tires are
less suitable for winter operation.Seite 171Wheels and tiresMobility171
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