2006 BMW Z4M ROADSTER Owner's Manual

Reference
At a glance
Controls
Driving tips
Mobility
23

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
breakdown assistance.
Mobility

Refueling
26
Refueling
Note when refueling
In contrast to the descriptions in the Owner's
Manual for the BMW Z4, please take note of the
following differences for your BMW Z4 M Road-
ster/Z4 M Coupe.
Fuel tank capacity
Approx. 14.5 US gallons/55 liters, including the
reserve capacity of approx. 2.6 US gallons/
10 liters.
Do not drive until the tank is empty. Oth-
erwise, the engine may not operate prop-
erly and damage could result.<
Fuel specifications
Do not fill the tank with leaded fuel, as this
would cause permanent damage to the
catalytic converter.<
Required fuel
Super Premium Gasoline/AKI 91
This gasoline is highly recommended. How-
ever, you may also use gasoline with less AKI.
The minimum AKI Rating is 89.
Do not fill the tank with any gasoline
below the specified minimum fuel grade;
otherwise engine damage could result.<

Reference
At a glance
Controls
Driving tips
Mobility
27
Wheels and tires
Correct wheels and tires
In contrast to the descriptions in the Owner's
Manual for the BMW Z4, your BMW Z4 M Road-
ster/Z4 M Coupe is not equipped with Run Flat
tires.
Information for your safety
The factory-approved radial-ply tires are spe-
cifically matched to your vehicle and offer opti-
mal road safety as well as enhanced driving
comfort if used properly.
In the event of a flat tire, proceed as described
under M Mobility System, refer to page31.
Z4 M Roadster: tire inflation pressures
Z4 M Coupe: tire inflation pressures
Snow chains*
Snow chains may be attached only to winter
tires of the size 225/40R 18 on both rear
wheels.
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 deactivate DSC temporarily, refer to
page18.<
Tire sizePressure specifications in psi/kPa
All pressure specifications in the table are indi-
cated in psi/kilopascal with cold tires, cold = ambi-
ent temperature
Front: 225/45 ZR 18
Rear: 255/40 ZR 1830/210
––
32/220
225/40 R 18 92 V M+S 33/230 36/250
You will find more information about permissible loads and weights on page41.
Tire sizePressure specifications in psi/kPa
All pressure specifications in the table are indi-
cated in psi/kilopascal with cold tires, cold = ambi-
ent temperature
Front: 225/45 ZR 18
Rear: 255/40 ZR 1830/210
––
32/220
225/40 R 18 92 V M+S 33/230 38/260
You will find more information about permissible loads and weights on page41.

Under the hood
28
Under the hood
Important parts in the engine compartment
1Washer fluid reservoir for headlamp and
windshield washer system
2Filler neck for engine oil, refer to Adding
engine oil
3Jump-starting connection4Reservoir for brake fluid
5Coolant expansion tank
6Chassis ground, negative terminal
7Dipstick for engine oil, refer to Checking the
oil level
Engine oil
Like fuel consumption, engine oil consumption
depends on your driving style and the vehicle's
operating conditions.
Warning lamp
Engine oil pressure
The warning lamp lights up in red:
The engine oil pressure is too low.
Stop the vehicle immediately and
switch off the engine. Check the engine oil level
and top up if necessary. If the oil level is correct,
please contact your nearest BMW Center or a
workshop that works according to BMW repair procedures with correspondingly trained per-
sonnel.
Do not continue driving, otherwise the
engine could sustain serious damage
from inadequate lubrication.<
Engine oil level
The warning lamp lights up in yellow
while you are driving. A signal also
sounds.
The oil level is at the absolute minimum; check
engine oil level using dipstick 7 and refill as
soon as possible. Do not drive more than
30 miles/50 km before refilling.

Reference
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Controls
Driving tips
Mobility
29
The warning lamp lights up in yellow
after the engine is switched off. A signal
also sounds.
Check the engine oil level using dipstick7 at the
earliest opportunity, e.g. when you stop to
refuel, and refill engine oil.
The warning lamp lights up in yellow
within 30 seconds after the engine is
started:
The oil level sensor is defective. Have the sys-
tem checked as soon as possible.
Checking the oil level
1.Position the vehicle on a level surface.
2.Switch off the engine when it is at operating
temperature.
3.After approx. 1 minute, pull dipstick 7 out
and wipe it off with a clean, lint-free cloth,
paper towel or something similar.
4.Carefully push the dipstick fully into its tube,
then pull it out again.
The oil level must be between the two
marks on the dipstick.
The oil volume between the two marks on the
dipstick corresponds to approx. 1.4 US quarts/
1.3 liters.
Adding engine oil
Do not add oil until the oil level has dropped
almost to the lower mark on the dipstick, refer to
Checking the oil level.
Do not add oil beyond the upper mark on
the dipstick, otherwise excessive oil can
lead to engine damage.<
Before you check the engine oil level after add-
ing oil, restart the engine and let it run to obtain
a correct reading. Then proceed as described
under Checking the oil level.
BMW engines are designed to operate
without oil additives; the use of additives
could even lead to damage in some cases. The
same applies to the transmission and differen-
tial as well as to the power steering.<
Continuous exposure to used oil has
caused cancer in laboratory tests. For this
reason, thoroughly wash any areas of skin that
have come into contact with oil using soap and
water.
Keep oils, greases, etc. out of the reach of chil-
dren and comply with the warnings on the con-
tainers. Otherwise, health hazards may result.<
Comply with the applicable environmen-
tal regulations concerning the disposal of
used oil.<
Recommendation: have the oil changed at your
BMW Center.
Approved engine oils
The quality of the engine oil is extremely impor-
tant for the function and life of an engine. BMW
only approves specific oils after confirming their
suitability for use in its vehicles with extensive
testing.

Under the hood
30 Only use oils specifically approved for your
vehicle model.
Your BMW Center will be glad to advise
you about oils currently approved for your
vehicle.<
You can also call BMW of North America toll-
free at 1-800-831-1117 or visit this website:
www.bmwusa.com to obtain this information.
Do not use any oil additives, as they could
cause engine damage under some cir-
cumstances.<
Alternative oil grades
If a high-performance synthetic oil approved by
BMW should be unavailable, you may use small
volumes of other oils for topping up between oil
changes. The following data must appear on
the packaging:
>Viscosity
preferred: SAE 10W-60
alternative: SAE 5W-40 or SAE 10W-40
>Specification
preferred: API SJ/CF
alternative: API SJ, also SK, SL, S...
Low ambient temperatures
The oils used by BMW at the factory for your
vehicle model can be used at virtually all ambi-
ent temperatures. However, if the vehicle is
operated for a longer period at temperatures
below –47/–206, your BMW Center will be
glad to recommend a suitable oil.