2012 BMW M6 CONVERTIBLE wheel size

▷A wheel without TPM electronics is fitted:
have the service center check it if necessary.▷Malfunction: have the system checked by
your service center.▷TPM could not be fully reset. Reset the sys‐
tem again.▷Disturbance by systems or devices with the
same radio frequency: after leaving the area
of the disturbance, the system automatically
becomes active again.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure Monitoring
System
Each tire, including the spare (if provided)
should be checked monthly when cold and in‐
flated to the inflation pressure recommended by
the vehicle manufacturer on the vehicle placard
or tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inflation pressure la‐
bel, you should determine the proper tire infla‐
tion pressure for those tires.) As an added safety
feature, your vehicle has been equipped with a
tire pressure monitoring system (TPMS) that il‐
luminates a low tire pressure telltale when one
or more of your tires is significantly under-in‐
flated. Accordingly, when the low tire pressure
telltale illuminates, you should stop and check
your tires as soon as possible, and inflate them
to the proper pressure. Driving on a significantly
under-inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and
may affect the vehicle's handling and stopping
ability. Please note that the TPMS is not a sub‐
stitute for proper tire maintenance, and it is the
driver's responsibility to maintain correct tire
pressure, even if under-inflation has not reached
the level to trigger illumination of the TPMS low
tire pressure telltale. Your vehicle has also been
equipped with a TPMS malfunction indicator to
indicate when the system is not operating prop‐
erly. The TPMS malfunction indicator is com‐
bined with the low tire pressure telltale. When
the system detects a malfunction, the telltale will
flash for approximately one minute and then re‐
main continuously illuminated. This sequence
will continue upon subsequent vehicle start-ups
as long as the malfunction exists. When the mal‐
function 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, including 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 re‐
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
FTM Flat Tire Monitor
The concept
The system does not measure the actual infla‐
tion pressure in the tires.
It detects a pressure loss in a tire by comparing
the rotational speeds of the individual wheels
while moving.
In the event of a pressure loss, the diameter and
therefore the rotational speed of the corre‐
sponding wheel change. This is detected and
reported as a flat tire.
Functional requirements
The system must have been initialized when the
tire inflation pressure was correct; otherwise,
reliable signaling of a flat tire is not ensured. In‐
itialize the system after each correction of the
tire inflation pressure and after every tire or
wheel change.
System limits Sudden tire damage
Sudden serious tire damage caused by
external influences cannot be indicated in ad‐
vance.◀Seite 101SafetyControls101
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Wheels and tiresVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment 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
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. When the tires
are warm, the tire inflation pressure is higher.
Check the tire inflation pressure regularly
Regularly check the tire inflation pressure
and correct it as needed: at least twice a month
and before a long trip. If you fail to observe this
precaution, you may be driving on tires with in‐
correct 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.◀
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 242, 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 val‐
ues in the tire inflation pressure table, refer to
page 242, and adjust as necessary.
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.◀
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Tire inflation pressure values up to
100 mph/160 km/h
M6Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires255/40R19 100V
M+S XL
255/35R20 97V M
+S XL2.5 / 362.5 / 36Front:
265/40ZR19
(102Y) XL
Rear: 295/35ZR19
(104Y) XL2.2 / 31
--
2.2 / 31Front:
265/35ZR20 (99Y)
XL
Rear: 295/30ZR20
(101Y) XL2.4 / 34
--
2.4 / 34
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 ex‐
cess 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. Otherwise tire
damage and accidents could occur.◀
Tire inflation pressure values over
100 mph/160 km/h
M6
With speed limiter
Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires255/40R19 100V
M+S XL
255/35R20 97V
M+S XL2.8 / 40
3.0 / 433.0 / 43
3.2 / 46Front:
265/40ZR19
(102Y) XL
Rear:
295/35ZR19
(104Y) XL2.6 / 37
--
2.6 / 37Front:
265/35ZR20
(99Y) XL
Rear:
295/30ZR20
(101Y) XL2.8 / 40
--
2.8 / 40
Without speed limiter
Tire sizePressure specifications in
bar/PSISpecifications in
bar/PSI with cold
tires255/40R19 100V
M+S XL
255/35R20 97V
M+S XL2.8 / 40
3.0 / 433.0 / 43
3.2 / 46Seite 242MobilityWheels and tires242
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Tire sizePressure specifications in
bar/PSIFront:
265/40ZR19
(102Y) XL
Rear:
295/35ZR19
(104Y) XL3.0 / 43
--
3.0 / 43Front:
265/35ZR20
(99Y) XL
Rear:
295/30ZR20
(101Y) XL3.3 / 47
--
3.3 / 47
Tire identification marks
Tire size
255/50 R 19 103 Y
255: nominal width in mm
50: aspect ratio in %
R: radial tire code
19: rim diameter in inches
103: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
Speed letter
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 3510
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
3510: tire age
Tires with DOT codes meet the guidelines of the
U.S. Department of Transportation.
Tire age
DOT … 3510: the tire was manufactured in the
35th week in 2010.
Recommendation
Regardless of wear, replace tires at least every
6 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: Treadwear 200; Traction AA;
Temperature A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
All passenger car tires must conform to Federal
Safety Requirements in addition to these
grades.
Treadwear
The 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 significantly from the norm due
to variations in driving habits, service practices
and differences in road characteristics and cli‐
mate.
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.Seite 243Wheels and tiresMobility243
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Indications of tire damage or other vehicle de‐
fects:▷Unusual vibrations during driving.▷Unusual handling such as a strong tendency
to pull to the left or right.
Damage can, e. g., be caused by driving over
curbs, road damage, or similar things.
In case of tire damage
If there are indications of tire damage, re‐
duce your speed immediately and have the
wheels and tires checked right away; otherwise,
there is the increased risk of an accident.
Drive carefully to the next service center or tire
shop.
If necessary, have the vehicle towed.
Otherwise, tire damage can be life-threatening
for vehicle occupants and other traffic partici‐
pants.◀
Repair of tire damage
For safety reasons, the manufacturer of
your vehicle recommends that you do not have
damaged tires repaired; they should be re‐
placed. Otherwise, damage can occur as a re‐
sult.◀
Changing wheels and tires
Mounting Information on mounting tires
Have mounting and balancing performed
only by a service center or tire specialist.
If this work is not carried out properly, there is
the danger of subsequent damage and related
safety hazards.◀
Wheel and tire combination
Information on the correct wheel-tire combina‐
tion and rim versions for your vehicle can be ob‐
tained from your service center.
Incorrect wheel and tire combinations impair the
function of a variety of systems such as ABS or
DSC.
To maintain good handling and vehicle re‐
sponse, use only tires with a single tread con‐
figuration from a single manufacturer.
Following tire damage, have the original wheel
and tire combination remounted on the vehicle
as soon as possible.
Approved wheels and tires
The manufacturer of your vehicle recom‐
mends that you use only wheels and tires that
have been approved for your particular vehicle
model.
For example, despite having the same official
size ratings, variations can lead to body contact
and with it, the risk of severe accidents.
The manufacturer of your vehicle cannot evalu‐
ate non-approved wheels and tires to determine
if they are suited for use, and therefore cannot
ensure the operating safety of the vehicle if they
are mounted.◀
Recommended tire brands
For each tire size, the manufacturer of your ve‐
hicle recommends certain tire brands. These
can be identified by a star on the tire sidewall.
With proper use, these tires meet the highest
standards for safety and handling.
New tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac‐
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Stowing the Mobility System1.Unscrew the filling hose of the sealant bottle
from the wheel.2.Unscrew the compressor connection hose
from the sealant bottle.3.Connect the sealant bottle filling hose that
was previously connected to the valve to the
vacant connector on the sealant bottle.
This prevents left-over sealant from escap‐
ing from the bottle.4.Wrap the empty sealant bottle in suitable
material to avoid dirtying the cargo area.5.Stow the Mobility System back in the vehi‐
cle.
Distributing the sealant
Immediately drive approx. to ensure that the
sealant is evenly distributed in the tire.
Do not exceed a speed of .
Do not drop below if possible.
Correcting the tire inflation pressure
1.Stop at a suitable location.2.Screw the connection hose of the compres‐
sor directly onto the tire valve.3.Insert the connector into the power socket
in the vehicle interior.4.Correct the tire inflation pressure to 2.5 bar.▷Increase pressure: with the ignition
turned on or the engine running, switch
on the compressor.▷To reduce the pressure: press the but‐
ton on the compressor.
Continuing the trip
Do not exceed the maximum permissible speed
of 50 mph/80 km/h.
Reinitialize the Flat Tire Monitor, refer to
page 101.
Reinitialize the Tire Pressure Monitor, refer to
page 99.
Replace the defective tire and the sealant bottle
of the Mobility System as soon as possible.
Snow chains
Fine-link snow chains
Only certain types of fine-link snow chains have
been tested by the manufacturer of your vehicle,
classified as road-safe and recommended.
Consult your service center for more informa‐
tion.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
255/40 R 19
Follow the chain manufacturer's instructions.
Make sure that the snow chains are always suf‐
ficiently tight. Retighten as needed according 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, if necessary
briefly activate M Dynamic Mode.
Maximum speed with snow chains
Do not exceed a speed of 30 mph/50 km/h when
using snow chains.Seite 249Wheels and tiresMobility249
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Sequential mode 69
Service and warranty 7
Service requirements, Condi‐ tion Based Service CBS 255
Service requirements, dis‐ play 83
Service, Roadside Assis‐ tance 264
Servotronic 109
Settings, M Drive 59
Settings on Control Dis‐ play 87
Settings, storing for seat, mir‐ rors, steering wheel 56
Shift Lights 72
Short commands 277
Shoulder support 53
Side airbags 95
Side View 118
Signaling, horn 12
Signals when unlocking 36
Sitting safely 51
Size 274
Ski bag 133
Smallest turning circle 275
Smoker's package 132
Snap-in adapter, mobile phone 216
Snow chains 249
Socket 132
Socket, OBD Onboard Diag‐ nostics 256
Software applications, iPhone 233
Software update 202
Spare fuse 261
Speaker lighting 173
Special destinations, naviga‐ tion 155
Specified engine oil types 253
Speed, average 86
Speed limit in the com‐ puter 86
Speed Volume, volume equal‐ ization 173 Split screen 20
Split screen map settings 164
Spoken instructions, naviga‐ tion 162
Stability control systems 106
Standard view, Head-up Dis‐ play 123
Start/stop, automatic func‐ tion 65
Start/Stop button 64
Start function during malfunc‐ tion 31
Starting the engine 65
State/province, selecting for navigation 152
Stations, stored 181
Station, storing 175
Status display, tires 99
Status information, iDrive 19
Status of Owner's Manual 6
Steering assistance 109
Steering wheel, adjusting 59
Steering wheel heating 59
Steering wheel memory 56
Stopping the engine 65
Storage compartments 135
Storage compartments, loca‐ tions 135
Storage, tires 246
Storing the vehicle 271
Street, entering for naviga‐ tion 153
Summer tires, tread 244
Supplementary text mes‐ sage 80
Surround View 114
Switch-on times, parked-car ventilation 129
Switch, refer to Cockpit 12
Symbols 6
System states of the driving dynamics 83
T
Tachometer 81 Tail and brake lamps 259
Tailgate 38
Tailgate via remote control 35
Tail lamps 259
Tail lamps, bulb replace‐ ment 259
Tasks 224
Technical changes, refer to Safety 6
Technical data 274
Technology, BMW M 0
TeleServices 230
Temperature, automatic cli‐ mate control 126
Temperature display, external temperature 81
Temperature, engine oil 81
Terminal, jump-starting 265
Text messages 221
Text message, supplemen‐ tary 80
Theft alarm system, refer to Alarm system 41
Theft protection, lug bolts 260
Theft protection, refer to Cen‐ tral locking system 33
Thermal camera, refer to Night Vision 119
Thigh support 52
Tilt alarm sensor 42
Tilt, seats 51
Time of arrival 86
Tire damage 244
Tire identification marks 243
Tire inflation pressure 241
Tire inflation pressure monitor, refer to FTM 101
Tire Pressure Monitor TPM 99
Tires, changing 245
Tire sealant 246
Tires, everything on wheels and tires 241
Tire tread 244
Toll roads, route 160 Seite 293Everything from A to ZReference293
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