wheel size BMW 135I CONVERTIBLE 2013 Owners Manual

95
Technology for driving comfort and safety
Controls
Message for unsuc
cessful system
reset
Yellow warning lamp lights up. A
message appears on the Control
Display.
The system has detected a wheel change, but
was not reset. A reliable warning is not possible
at the current inflation pressures.
Check the tire inflation pressure and reset the
system, refer to page 93.
Malfunction
The small warning lamp flashes in
yellow and then lights up continu-
ously; the large warning lamp lights
up in yellow. The tires appear in gray
in the Control Display. No punctures can be
detected.
Display in the following situations:
> A wheel without TPM electronics has been
installed:
Have it checked by your BMW center.
> Malfunction
Have the system checked
> Tire Pressure Monitor was unable to
complete the resetting process. Reset the
system again.
The small warning lamp flashes in
yellow and then lights up continu-
ously; the large warning lamp lights
up in yellow. The tires appear in gray
in the Control Display.
Display in the following situations:
Interference from systems or devices that use
the same radio frequency. The system auto-
matically becomes active again when the vehi-
cle moves out of the interference zone.
Declaration according to NHTSA/
FMVSS 138
Tire Pressure Monitoring Systems
Each tire should be checked monthly when cold
and inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the vehicle placard or tire infl
ation pressure label. If
your vehicle has tires of a different size than the
size indicated on the vehi cle placard or tire infla-
tion pressure label, you should determine the
proper tire inflation pressure for those tires. As
an added safety feature, your vehicle has been
equipped with a tire pr essure monitoring sys-
tem, TPMS, that illuminate s a low tire pressure
t e l l t a l e w h e n o n e o r m o r e o f y o u r t i r e s a r e s i g n i f -
icantly underinflated. Accordingly, when the
low tire pressure telltal e illuminates, you should
stop and check your tires as soon as possible,
and inflate them to the proper pressure. Driving
on a significantly underinflated tire causes the
tire to overheat and ca n lead to tire failure.
Underinflation also reduces fuel efficiency and
tire tread life and may a ffect the vehicle's han-
dling and stopping ability. Please note that the
TPMS is not a substitute for proper tire mainte-
nance, and it is the driver's responsibility to
maintain correct tire pr essure, even if underin-
flation has not reached th e level to trigger illumi-
nation of the TPMS low tire pressure indicator.
The TPMS malfunction indicator is combined
with the low tire pressure telltale. When the sys-
tem detects a malfunction, the telltale will flash
for approximately one minute and then remain
continuously lit. This sequence will continue
upon subsequent vehicle startups as long as
the malfunction exists. When the malfunction
indicator is illuminated, the system may not be
able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a
variety of reasons, includ ing the installation of
replacement or alternate tires or wheels on the
vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.

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223
Wheels and tires
Mobility
Wheels and tires
Vehicle equipment
In this chapter, all production, country, and
optional equipment that is offered in the model
range is described. For this reason, descrip-
tions will be given of some equipment that may
not be available in a vehi
cle, for example due to
the special options or national-market version
selected. This also app lies to safety related
functions and systems.
Tire inflation pressures
Information for your safety
It is not merely the tire s' service life, but also
driving comfort and, to a great extent, driving
safety that depend on th e condition of the tires
and the maintenance of th e specified tire pres-
sure.
Check the tire inflation pressure regularly
and correct it, if nece ssary: 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
page 93, or reinitialize the Flat Tire Monitor,
refer to page 91.<
Inflation pressure specifications
The tables below provide all the correct inflation
pressures for the specified tire sizes at ambient
temperature.
The inflation pressure s 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 identificati on of the right tire
inflation pressures, observe the following:
> Tire sizes for your vehicle
> Maximum allowable driving speed

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225
Wheels and tires
Mobility
Coupe: tire inflation pressures for the 128i
Coupe: tire inflation pressures for the 135i
Tire size Pressure specifications in bar/psi
Traveling speeds up to a max. of
100 mph/160 km/h Traveling speeds
including those exceeding
100 mph/160 km/h
All pressure specifications in the table are
indicated in bar/psi with cold tires.
Cold = ambient temperature
195/55 R 16 87 H M+S RSC 2.2/32 2.6/38 2.4/35 2.9/42
205/50 R 17 89 H M+S A/S RSC
205/55 R 16 91 H M+S RSC
205/50 R 17 89 H M+S RSC 2.2/32 2.4/35 2.4/35 2.9/42
Front: 205/50 R 17 89 V RSC 2.2/32 - 2.5/36 -
Rear: 225/45 R 17 91 V RSC - 2.4/35 - 3.0/44
Front: 215/40 R 18 85 Y RSC 2.2/32 - 2.4/35 -
Rear: 245/35 R 18 88 Y RSC - 2.7/39 - 2.9/42
Compact spare wheel:
T 125/80 R 17 99 M Traveling speeds up to a max. of 50 mph/80 km/h
4.2/60
Tire size Pressure specifications in bar/psi
Traveling speeds up to a max. of
100 mph/160 km/h Traveling speeds
including those
exceeding
100 mph/160 km/h
All pressure specifications in the table are
indicated in bar/psi with cold tires.
Cold = ambient temperature
205/50 R 17 89 H M+S A/S RSC
205/50 R 17 89 H M+S RSC 2.3/33 2.5/36
2.6/38 2.9/42
Front: 215/40 R 18 85 Y RSC 2.5/36 -2.6/38 -
Rear: 245/35 R 18 88 Y RSC - 2.7/39- 2.9/42
Compact spare wheel:
T 125/80 R 17 99 M Traveling speeds up to a max. of 50 mph/80 km/h
4.2/60

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226
MobilityWheels and tires
Convertible: tire inflation pressures for the 128i
Tire size Pressure specifications in bar/psi
Traveling speeds up to a max. of
100 mph/160 km/h Traveling speeds
including those exceeding
100 mph/160 km/h
All pressure specificat ions in the table are
indicated in bar/psi with cold tires.
Cold = ambient temperature
without Sport Package
205/55 R 16 91 H M+S A/S RSC
205/55 R 16 91 H M+S RSC 2.2/32 2.4/35 2.2/32 2.7/39
205/50 R 17 89 H M+S A/S RSC
205/50 R 17 89 H M+S RSC 2.2/32 2.6/38 2.4/35 2.9/42
Front: 205/50 R 17 89 V RSC 2.2/32 - 2.4/35 -
Rear: 225/45 R 17 91 V RSC - 2.5/36 - 2.8/41
Front: 215/40 R 18 85 Y RSC 2.4/35 - 2.4/35 -
Rear: 245/35 R 18 88 Y RSC - 2.8/41 - 2.8/41
Compact spare wheel:
T 125/80 R 17 99 M Traveling speeds up to a max. of 50 mph/80 km/h
4.2/60
with Sport Package
205/55 R 16 91 H M+S RSC 2.2/32 2.4/35 2.2/32 2.7/39
205/50 R 17 89 H M+S RSC 2.2/32 2.6/38 2.4/35 2.9/42
Front: 205/50 R 17 89 V RSC 2.2/32 - 2.7/39 -
Rear: 225/45 R 17 91 V RSC - 2.5/36 - 3.2/46
Front: 215/40 R 18 85 Y RSC 2.4/35 - 2.6/38 -
Rear: 245/35 R 18 88 Y RSC - 2.8/41 - 3.1/45
Compact spare wheel:
T 125/80 R 17 99 M Traveling speeds up to a max. of 50 mph/80 km/h
4.2/60

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227
Wheels and tires
Mobility
Convertible: tire inflation pressures for the 135i
Tire size Pressure specifications in bar/psi
Traveling speeds up to a max. of
100 mph/160 km/h Traveling speeds
including those exceeding
100 mph/160 km/h
All pressure specifications in the table are
indicated in bar/psi with cold tires.
Cold = ambient temperature
without Sport Package
205/50 R 17 89 H M+S A/S RSC
205/50 R 17 89 H M+S RSC 2.2/32 2.6/38 2.5/36 2.9/42
Front: 215/40 R 18 85 Y RSC 2.7/39 - 2.7/39 -
Rear: 245/35 R 18 88 Y RSC - 2.8/41 - 2.8/41
Compact spare wheel:
T 125/80 R 17 99 M Traveling speeds up to a max. of 50 mph/80 km/h
4.2/60
with Sport Package
205/50 R 17 89 H M+S RSC 2.2/32 2.6/38 2.5/36 2.9/42
Front: 215/40 R 18 85 Y RSC 2.7/39 - 2.7/39 -
Rear: 245/35 R 18 88 Y RSC - 2.8/41 - 3.1/45
Compact spare wheel:
T 125/80 R 17 99 M Traveling speeds up to a max. of 50 mph/80 km/h
4.2/60

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228
MobilityWheels and tires
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 … 1013 means that the
tire was manufactured in week 10 of 2013.
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 betw een 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 Requir ements 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 conditio ns on a specified gov-
ernment test course. For example, a tire graded
150 would wear one and one-half (1 γ) times as
well on the government course as a tire graded
100. The relative performance of tires depends
upon the actual conditio ns 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.
These grades represent the tire's ability to stop
on wet pavement, as measured under con-
trolled conditions on specified government test
surfaces of asphalt and concrete. A tire marked
C may have poor traction performance.
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 4012

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230
MobilityWheels and tires
Unusual vibrations encountered during normal
vehicle operation can indicate tire failure or
some other vehicle defect. This can, for exam-
ple, be caused by driving over curbs. The same
applies to any other abnormal road behavior,
such as pulling severely to the right or left.
In these cases, reduce speed immedi-
ately and have wheels and tires thor-
oughly checked. To do so , drive carefully to the
nearest BMW center or tire dealer. If necessary,
have the vehicle towed there.
O t h e r w i s e , t i r e d a m a g e c a n p o s e a l e t h a l h a z a r d
to vehicle occupants and other road users. <
Tire age
For various reasons, such as the development
of brittleness, BMW recommends tire replace-
ment after no more than 6 years, regardless of
the actual wear of the tires.
The manufacturing date of tires is contained in
the tire coding:
DOT ... 1013 means that the tire was manufac-
tured in week 10 of 2013.
New wheels and tires
Have new wheels and tires mounted only
by your BMW center or by a tire dealer. If
this work is not carried out properly, there is a
danger of subsequent damage and related
safety hazards. Make sure that the new wheels
are balanced. <
Retreaded tires
BMW recommends that you do not use
retreaded tires, since driving safety may
be impaired. The causes for this include poten-
tially different tire casing structures and often
wide variations in tire ag e, which can result in a
limited service life. <
Correct wheels and tires
When mounting new tires or changing over
from summer to winter tires and vice versa,
mount run-flat tires for your own safety. In the
event of a flat, no spare wheel is available. Your
BMW center will be glad to advise you.
BMW recommends that you use only
wheel and tire combinations that BMW
has tested and approved for your particular
vehicle. Variations in factors such as manufac-
turing tolerances mean that even wheels and
tires with identical offi cial size ratings could
actually have different dimensions, which could
lead to body contact an d thus to severe acci-
dents. If non-approved wheels and tires are
used, BMW cannot evaluate their suitability,
and therefore cannot guarantee their driving
safety. <
You can inquire about the right wheel/tire
combination at your BMW center.
The correct combination of wheels and tires is
also necessary to ensure reliable operation of
various vehicle systems such as ABS, DSC or
FTM.
To maintain good handling and vehicle
response, use only tires of a single brand and
tread configuration. Af ter a tire has been
damaged, mount the previous wheel and tire
combination again as soon as possible.
Wheels with Tire Pressure Monitor
TPM electronics
When mounting new tires or changing over
from summer to winter tires, or vice versa, only
use wheels with TPM electronics; otherwise,
the Tire Pressure Monito r may not be able to
detect a puncture, refer to page 94. Your BMW
center will be glad to advise you.

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Wheels and tires
Mobility
Recommended tire brands
Certain makes of tire are recommended by
BMW for each tire size. They are marked with a
clearly visible BMW designation on the sidewall
of the tire.
When properly used, these tires meet the high-
est standards in terms of safety and handling
characteristics.
Special characteristics of winter tires
BMW recommends winter tires for driving on
winter roads or at temperatures below +45
7/
+7 6. Although all-season M+S tires provide
better winter traction th an summer tires, they
generally fail to provide the same levels of cold-
weather performance as winter tires.
Pay attention to speed
Always comply with the speed limit for the
winter tires mounted on your car; failure
to do so could result in tire damage and
accidents. <
If the car is capable of speeds higher than that
permitted for the winter ti res, a label stating the
maximum permitted speed for the mounted
tires must be displayed in your field of view.
Specialist tire dealers and your BMW center
can supply these labels.
Storage
Store wheels and tires in a cool, dry place with
as little exposure to light as possible. Always
protect tires against all co ntact with oil, grease
and fuels.
Do not exceed the maximum tire inflation
pressure indicated on th e sidewall of the tire.
Swapping wheels between axles
BMW advises against swapping wheels
between the front and rear axles, even if all tires
have the same size, as th is could impair driving
characteristics. If the tires are of mixed sizes,
swapping wheels between the axles is not
permissible.
Run-flat tires
The symbol identifying run- flat tires is a circle
with the letters RSC on the sidewall.
Run-flat tires comprise a conditionally self-
supporting tire and a special rim. The reinforce-
ment in the sidewalls en sures that the tire can
continue to be used su bject to certain restric-
tions, even if depressurized.
For information on continuing to drive with a flat
tire, refer to Indication of a flat tire on page92.
Snow chains
Only certain fine-link snow chains have been
tested by BMW, classified as safe for use and
recommended. Consult your BMW center for
more information. Snow chains must be
mounted in pairs and on the rear wheels only.
Observe the manufacturer's instructions when
mounting snow chains. Do not exceed a speed
of 30 mph/50 km/h with chains.
Do not initialize the Flat Tire Monitor if
snow chains are mounted; otherwise, the
instrument might issue an incorrect reading.
When driving with snow chains, you may find it
helpful to activate DT C temporarily, refer to
page 89.<

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280
ReferenceEverything from A to Z
Switching the air conditioning
on and off 109
Switching the entertainment audio output on/off 154
Switch-on times of parked car
ventilation, preselecting 110
Symbols 4
– status information 23
T
Tachometer76
Tailgate, refer to Trunk lid 37
Tail lamp, refer to Tail
lamps 246
– replacing bulb 247
Tail lamps 246
– replacing bulb 247
Tank contents, refer to
Capacities 259
Tasks 207
Technical data 258
– dimensions 258
Technical modifications 5
Telephone 188
– hands-free system 197
– phone book 195
– received calls 196
– redialing 196
– voice commands 197
Telephone, installation
location, refer to Center
armrest 115
TeleService 213
Teleservice Diagnosis 214
Temperature display
– outside temperature 75
– outside temperature warning 75
– setting the units 80
Tempomat, refer to Cruise control 73
Text message 205
Thigh support 50
Third brake lamp, refer to Center brake lamp 247Three-point safety belt
54
Through-loading system 117
Tilt alarm sensor 39
Tilt function, passenger side mirror 56
Timer, refer to Preselecting switch-on times 110
Tire inflation pressure 223
– loss 92,93
Tire pressure monitoring, refer to Flat Tire Monitor 91
Tire Pressure Monitor TPM 92
– resetting the system 93
– system limitations 93
– warning lamp 94
Tire puncture, refer to Flat Tire Monitor 92
Tire Quality Grading 228
Tires
– age 228,230
– air loss 94
– bre a

king in 124
– changing, refer to Changing wheels 248
– condition 229
– damage 229
– inflation pressure 223
– labels 228
– minimum tread depth 229
– new tires 230
– pressure monitoring, refer to Flat Tire Monitor 91
– pressure monitoring, refer to
Tire Pressure Monitor
TPM 92
– puncture 92
– retreaded 230
– run-flat tires 231
– size 228
– wear indicators, refer to Minimum tread depth 229
– winter tires 231
TMC station, refer to Traffic bulletins 147 Tone
– control
155
– middle setting 156
Tools, refer to Onboard vehicle tool kit 243
Top 50 in music collection 175
Tow bar 253
Tow fitting 252
Tow fittings for tow-starting and towing away 252
Towing 252
– car with automatic transmission 252
– methods 253
– with 7-gear Sport automatic
transmission with double
clutch 253
Towing and tow-starting 252
Town/city, for navigation 134
Tow rope 254
Tow-starting 252
TPM, refer to Tire Pressure Monitor 92
Track
– selecting on CD 166
Traction control, refer to Dynamic Stability Control
DSC 89
Traffic bulletins
– categories 149
Traffic bulletins, filtering 149
Traffic bulletins for navigation 147
– during destination guidance 149
Traffic bulletins in navigation
– screen display in the map view 148
Traf fic co

ngestion
– displaying traffic bulletins 147
– refer to Route, bypassing
segments 144

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