2002 BMW Z3 fuel

114n
Wheel and tire combinationsThe right choice
Use only wheels and tires
approved by BMW for the corre-
sponding vehicle model, as otherwise
the tires may make contact with the
body as the result of tolerances despite
the same nominal size being used,
resulting in serious accidents. If non-
approved wheels and tires are used,
BMW cannot evaluate their suitability,
and therefore cannot be held liable for
driving safety.<
For wheel and tire specifications
approved by BMW, refer to the informa-
tion beginning on page 116.
The correct wheel and tire combi-
nation affects different systems
such as ABS and ASC+T/DSC
*. The
function of these systems is impaired if
improper wheel and tire combinations
are used.
For this reason, use only tires of the
same manufacture and tread configura-
tion. In the event of a flat tire, for
example, remount the approved wheel
and tire combination as soon as
possible.<
Codes on tires and wheelsThe code on the tires has the following
meaning.
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 149 mph (240 km/h)
W = up to 167 mph (270 km/h)
Y = up to 186 mph (300 km/h)
ZR = over 149 mph (240 km/h) Example:
Nominal width
in mm
Aspect ratio in %
Belt rating ID code
for radial tires
Wheel diameter in inches
Load rating
(not on ZR tires)
Speed rating
(before R on ZR tires)
205/60 R 15 91 H
All season and 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 on light-alloy wheels:
Protect valve inserts against dirt by
using screw-on valve caps. Dirt in the
valve inserts frequently causes a slow
loss in tire pressure.Storage Store tires in a cool, dry place,
protecting them against 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
7x15H2
J

123n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Engine oil To check oil level1. Park the vehicle on a level surface
2. Switch the engine off after it has
reached normal operating tempera-
ture
3. After approx. 5 minutes, pull the
dipstick out and wipe it off with a
clean lint-free cloth, paper towel, or
similar material
4. Push the dipstick carefully all the way
into the guide tube and pull it out
again
5. The oil level should be between the
two marks on the dipstick.
As with fuel economy, oil consumption
is directly influenced by your driving
style and vehicle operating conditions.367de738
The space between the two marks on
the dipstick corresponds to approx.
1.1 US quarts (1 liter). Do not fill beyond
the upper mark on the dipstick. Excess
oil will damage the engine.460de189
To add oilWhile you should wait until the level has
dropped to just above the lower mark
before adding oil, you should never
allow the oil level to fall below this
mark.
BMW engines are designed to
operate without oil additives; the
use of additives could lead to damage
in some cases. This also applies to the
manual and automatic transmission, the
differential and the power steering
system.< 367de344

131n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Storing your vehicle5. Fill the fuel tank completely to
prevent the formation of condensa-
tion
6. Increase the tire inflation pressure to
51 psi (350 kPa).Before parking the vehicle for
storage1. Dry the parking brake and footbrake
by brake applications to prevent the
brake rotors and drums from
corroding
2. Park the vehicle in a covered, dry,
and well-ventilated room. Place the
transmission in 1st gear or set the
selector lever to the "P" position.
Chock the wheels to prevent the
vehicle from rolling if necessary. Do
not set the parking brake
3. Remove the battery, charge it
completely and store it in a cool (but
frost-free) room
Z3 roadster:
4. Remove the hardtop
* and store it
separately, refer to page 109
5. Close the convertible top.
During storageRecharge the battery every six months.
If it is not recharged, it will not be
serviceable. Every time the battery is
discharged, especially over extended
periods, its service life is reduced.
Removing the vehicle from
storageRecharge the battery if the "Magic Eye"
turns black, refer to page 154.
Then have Inspection I performed by
your BMW center, including a brake
fluid replacement if necessary, refer to
the Service Manual.

Overview
Controls and features
Operation, maintenance
Owner service procedures
Technical data
Index Advanced technology
135n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Replacement procedures:
Onboard tool kit136
Windshield wiper blades136
Lamps and bulbs137
Master key with battery
lamp143
Remote control144
Wheel change146
Battery153
Fuses156
In case of electrical
malfunction:
Power convertible top157
Fuel filler door157
Assistance, giving and
receiving:
Jump-starting158
Towing the vehicle159
Repairs

157n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Power convertible top
*
Fuel filler door
Closing manually For roadsters with electrical power
convertible top
*, the convertible top
drive unit is located in the luggage
compartment behind the left side trim
panel.
Turn the clip at the top of the trim panel
to the left or right and swing the trim
panel to the side.
Turn the T-pin a half turn to the left
(refer to the illustration).
The convertible top drive unit is disen-
gaged and the convertible top can be
operated manually, refer to page 40.
Please have your BMW center eliminate
the defect and reengage the drive.
367de285
Z3 roadster
Releasing manuallyThe illustration shows the example
of the Z3 roadster.
Operation and function for the
Z3 coupe is the same as for the
Z3 roadster.
Pull the button at the right in the
luggage compartment sharply (arrow).
Please consult your BMW center to
have the defect corrected.367de372
Z3 roadster

170n
Z3 roadster 2.5i Z3 roadster 3.0i,
Z3 coupe 3.0i
Displacement
Number of cylinderscu. in (cm
m) 152.2 (2,494)
6181.8 (2,979)
6
Maximum power output
at engine speedhp
rpm184
6,000225
5,900
Maximum torqueat engine speedlb-ft (Nm)
rpm175 (237)
3,500214 (290)
3,500
Compression ratioe 10.5 10.2
Stroke
Borein (mm)
in (mm)2.95 (75.0)
3.31 (84.0)3.53 (89.6)
3.31 (84.0)
Fuel-injection system Digital electronic engine-management systemEngine specifications

172n
Weights
Z3 roadster 2.5i Z3 roadster 3.0i Z3 coupŽ 3.0i
Curb weight (with one person, ready for operation, full tank of fuel, options not included)
with manual transmission
with automatic transmissionlbs (kg)
lbs (kg)2,899 (1,315)
2,987 (1,355)2,910 (1,320)
2,998 (1,360)2,943 (1,335)
3,031 (1,375)
Approved gross vehicle weight
with manual transmission
with automatic transmissionlbs (kg)
lbs (kg)3,450 (1,565)
3,538 (1,605)3,461 (1,570)
3,549 (1,610)3,494 (1,585)
3,582 (1,625)
Approved front axle load lbs (kg) 1,852 (840) 1,852 (840) 1,830 (830)
Approved rear axle load lbs (kg) 1,918 (870) 1,918 (870) 1,918 (870)
Approved roof load capacity lbs (kg) 77 (35) 77 (35) 110 (50)
Luggage compartment capacity cu ft (liters) 5.8 (165) 5.8 (165) 7.2 - 14.3 (205 - 405)

173n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Capacities
Notes
Fuel tank
reserve gal. (liters)
gal. (liters)approx. 13.5 (approx. 51)
approx. 2.1 (approx. 8.0)Fuel specification: page 26
Windshield washer system/
Headlamp washer system quarts (liters) approx. 5.3 (approx. 5.0)For details: page 122
Cooling system including heating circuit quarts (liters) 11.1 (10.5) For details: page 125
Engine with oil filter renewal quarts (liters) 6.9 (6.5) "BMW High Performance
Synthetic Oil"
For details: page 124
Manual transmission, automatic
transmission and differentialÐ Lifetime fluid, no fluid change
required