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IndexDataTechnologyRepairsCar careControlsOverview
Fuel specifications Tire inflation pressuresThe engine uses lead-free gasoline
only.
Required fuel:
>Premium Unleaded Gasoline,
min. 91 AKI.
AKI = Anti Knock Index
Do not use leaded fuels. The use
of leaded fuels will cause perma-
nent damage to the system's oxygen
sensor and the catalytic converter.<
The correct tire inflation pressures are
on a sticker attached to the B-pillar and
visible with the driver's door open.Checking tire pressuresAll tire pressure and ambient air
temperature specifications are stated in
the units usually used in your country
(psi; kilopascal) (also see the following
tire inflation pressure table).
After correcting the tire inflation pres-
sure, re-initialize the Tire Pressure
Warning system (RDW) so that it can
monitor the tire inflation pressure. Refer
to page 81.
Check tire inflation pressures
regularly – at least every two
weeks and before beginning a longer
trip. Otherwise, incorrect tire pressure
can lead to poor handling, tire damage
and accidents.< Comply with tire approval
specifications The inflation pressures in the table
apply to tires made by BMW approved
manufacturers. Your BMW center is
familiar with these pressures. Higher
pressures may be specified for tires
made by other manufacturers. You will
find a list of approved tire sizes on
page 120.
Your vehicle is equipped with tires that
not only meet US standards, but also
European standards. We recommend
the exclusive use of BMW approved
tires.
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IndexDataTechnologyRepairsCar careControlsOverview
Tire replacement Tire rotation
Do not use retreaded tires. Driving
safety may be impaired by their
use. The reason for this are possible
variations in tire casing structures and,
in part, because they are already quite
old, which can lead to a deterioration in
their durability.<
Tire ageThe date on which the tire was manu-
factured is indicated by the code on the
sidewall:
DOT ... 1101 means that the tire was
produced in the 11th week of the year
2001.
BMW recommends replacing all tires
after 6 years at the latest, even if a tire
life of 10 years is possible.
Spare tires over 6 years old should be
used only in case of emergency. A tire
in this condition should be replaced by
a new tire immediately, and should not
be mounted together with new tires.
Re-initialize the Tire Pressure Warning
(RDW) after rotating the tires. Refer to
page 81 for further information.Summer tires
Due to different tire sizes on the
front and rear axles (refer to
page 120), the tires may not be rotated
from one axle to the other.<
Winter tiresThe wheels are designed specifically
for use at the front or rear only.
Because the front and rear wheels
feature different rim depths (refer to
page 120), you should never attempt to
switch wheels from the front to rear or
vice versa.
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Wheel and tire combinations The right choice
Only use wheels and tires that
have been approved by BMW for
the corresponding vehicle model, as
otherwise body contact and serious
accidents can result despite the use of
the same nominal size, e.g. due to
tolerances. BMW cannot evaluate 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 installed.<
For wheel and tire sizes approved by
BMW, refer to page 120.
Failure to use the specified wheel
and tire combinatons can have an
adverse effect on the performance of
various systems such as ABS and DSC.
For this reason, use only tires made by
the same manufacturer and that have
the same tread configuration on the
vehicle. And after a flat tire, for
instance, restore the approved wheel
and tire combination as soon as
possible.<
Codes on the tires and wheels The marking on the tire has the
following meaning.
The codes on radial tires:
The speed rating indicates the
approved maximum speed for the tire.
Summer tires:
S = up to 112 mph (180 km/h)
T = up to 118 mph (190 km/h)
H = up to 130 mph (210 km/h)
V = up to 150 mph (240 km/h)
W = up to 167 mph (270 km/h)
Y = up to 187 mph (300 km/h)
ZR = over 150 mph (240 km/h) Example:
Nominal width
in mm
Aspect
ratio in %
Radial tire ID code
Rim diameter in inches
Load rating
(not on ZR tires)
Speed rating
(before R on ZR tires)
225/45 R
1892W
Winter tires:
Q M+S = up to 100 mph (160 km/h)
T M+S = up to 118 mph (190 km/h)
H M+S = up to 130 mph (210 km/h)
Codes stamped on light-alloy wheels:
Protect tire valve from dirt by using
screw-on valve stem caps. Dirt in the
valves frequently leads to slow leaks. Storage Always store tires in a cool, dry place.
Store them away from light whenever
possible. Protect the tires against
contact with oil, grease and fuel. Example:
Rim width
in inches
Code letter for
flange type
Symbol for full-drop
center rim
Rim diameter in inches
Hump on the 2 rim shoulders
8 x 18 H 2
J
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Approved wheel and tire specifications Depending on the tire size, certain tire brands tested by BMW have been
classified and approved as safe in traffic. Contact your BMW center for a list
of these tires.
Observe any country-specific regulations, e.g. on making a corresponding
entry in the vehicle documents.
Tire specifications Light-alloy wheel
BMW M3 convertible
Summer tires
Front: 225/45 ZR 18 8J x 18 EH2
Rear: 255/40 ZR 18 9J x 18 EH2
Front: 225/40 ZR 19 8J x 19 EH2
Rear: 255/35 ZR 19 9.5J x 19 EH2
Winter tires (M+S)
Front: 225/45 R 17 91 H
Rear: 225/45 R 17 91 H7.5J x 17 EH2 IS47
7.5J x 17 EH2 IS25
Snow chains
*
It is not possible to mount snow chains
on tires with 18-/19-inch wheels.
Deactivate the Tire Pressure
Warning system (RDW) when
using snow chains. Malfunction warn-
ings and undetected losses in pressure
are a possibility when driving with snow
chains.
For further information, refer to
page 81.
When selecting winter tires,
always remember the different rim
depths on the front and rear wheels.
Failure to mount the tires approved for
each wheel can lead to damage.<