spare wheel BMW Z3 2002 Owners Manual

110n
Information for your safetyThe factory-approved radial tires are
matched to the vehicle and have been
selected to provide optimum safety and
driving comfort on your vehicle.
In a very real sense, both tire life and
your own safety are riding on correct
tire specifications and inflation pres-
sures, refer to page 26.
Incorrect tire inflation pressure is
a frequent cause of tire damage. It
also significantly influences the road-
holding ability of your BMW. Be sure to
check the tire inflation pressures,
including the spare tire, on a regular
basis, at least twice a month and before
doing any extended driving, refer to
page 26. If this is not done, incorrect
tire pressures can cause driving insta-
bility and tire damage, ultimately
resulting in accidents.<
Check the inflation pressure of
the spare tire For checking tire pressures, there is a
valve extension (arrow) on the storage
tray of the spare wheel which is acces-
sible from outside.367de309
Tire tread Ð tire damageInspect your tires frequently for tread
wear, signs of damage and for foreign
objects lodged in the tread. Check the
tread pattern depth.
Tread depth should not be allowed to
go below 0.12 in (3 mm), even though
the legally specified minimum tread
depth is 0.063 in (1.6 mm). Tread wear
indicators (arrow) are embedded in the
base of the tire's tread. Their locations
are indicated by the legend TWI Ð Tread
Wear Indicator Ð at various points on
the tire's shoulder. When the tread
reaches a depth of 0.063 in (1.6 mm),
these indicators appear to signal that
the tires have worn to the minimum
legal level. Below 0.12 in (3 mm) tread
depth, there is an increased risk of
aquaplaning, even at relatively 390de331
Notes on inflation pressures Tire condition

113n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Tire replacement Tire rotationTire ageThe date on which the tire was manu-
factured is indicated by the code on the
sidewall:
DOT ... 2501 indicates that the tire was
manufactured in week 25 of 2001.
BMW recommends the replacement
of all tires when the tires are no more
than 6 years old, even if a tire usage of
10 years is possible.
Spare tires over 6 years old should be
used only in case of emergency. A tire
of this age should be replaced by a new
tire immediately, and should not be
fitted together with new tires.
Between the axlesTread wear at the front and rear axle is
different and will vary according to indi-
vidual driving conditions. In the interest
of safety and optimal vehicle response,
we advise against rotating tires from
front to rear and vice versa.
If rotating the tires between the axles is
under consideration for economic
reasons, the costs for remounting the
wheels must be calculated against any
savings which might result from the
anticipated extension in tire life. Rota-
tion should always be carried out at
short intervals, with a maximum of
3,000 miles (5,000 km). Consult your
BMW center for more information.Should you decide to rotate the tires,
it is essential to comply with the
following:
Rotate wheels on the same side of the
vehicle only, otherwise braking effi-
ciency and road grip could be adversely
affected.
Following rotation, correct the tire infla-
tion pressure.
If tires with different sizes are
mounted on the front and rear
axles (refer to the information beginning
on page 116), the wheels may not be
rotated from one axle to the other.<

116n
Approved wheel and tire specificationsBMW tests certain tire brands for each tire size, classifies them as road-safe and
approves them. Consult your BMW center for more information.
Observe any regulations applicable in the country of use, e.g. requiring entry in
the vehicle documents.
Tire specifications Suitable for
snow chainsSteel wheel
(rim)Light-alloy
wheel
Z3 roadster 2.5i
Summer
225/50 R 16 92 V
225/50 ZR 16[Ð 7Jx16
Front: 225/45 ZR 17
Rear: 245/40 ZR 17Ð
ÐÐ
Ð7.5Jx17
8.5Jx17
Winter (M+S)
205/60 R 15 91 Q/T/H[ 6.5Jx15 7Jx15
205/55 R 16 91 Q/T/H
225/50 R 16 92 Q/T/H[7Jx16 7Jx16
225/45 R 17 91 Q/T/H[Ð
Ð7.5Jx17
8Jx17
Spare tire
T 115/90 R 16 92 M Ð 3.00Bx16 Ð
Use the spare wheel only for short
distances (to reach the nearest BMW
center, for instance). Due to the altered
handling characteristics, do not exceed
a maximum speed of 50 mph (80 km/h).
Mounting snow chains on the spare tire
is not possible. Be sure that all tires are
properly inflated, refer to page 27.
The use of rims and lug bolts that
do not meet the specifications of
the original factory-installed equipment
will affect the safe operation of your
vehicle and may cause an accident and
personal injury.
Never mix tires of different design, such
as steel-belted radials with bias-belted
or bias-ply tires etc. Mixing tire types
will adversely affect road-holding and
can lead to loss of vehicle control.<

117n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Approved wheel and tire specificationsBMW tests certain tire brands for each tire size, classifies them as road-safe and
approves them. Consult your BMW center for more information.
Observe any regulations applicable in the country of use, e.g. requiring entry in
the vehicle documents.
Z3 roadster 3.0i, Z3 coupe 3.0i
Summer
225/50 R 16 92 V
225/50 ZR 16[Ð 7Jx16
Front: 225/45 ZR 17 Ð Ð 7.5Jx17
Rear: 245/40 ZR 17 Ð Ð 8.5Jx17
Winter (M+S)
205/55 R 16 91 Q/T/H
225/50 R 16 92 Q/T/H[7Jx16 7Jx16
225/45 R 17 91 Q[Ð
Ð7.5Jx17
8Jx17
Spare tire
T 115/90 R 16 92 M Ð 3.00Bx16 Ð
Use the spare tire only for short
distances (to reach the nearest BMW
center, for instance). Due to the altered
handling characteristics, do not exceed
a maximum speed of 50 mph (80 km/h).
Mounting snow chains on the spare tire
is not possible. Be sure that all tires are
properly inflated, refer to page 27.
The use of rims and lug bolts that
do not meet the specifications of
the original factory-installed equipment
will affect the safe operation of your
vehicle and may cause an accident and
personal injury.
Never mix tires of different design, such
as steel-belted radials with bias-belted
or bias-ply tires etc. Mixing tire types
will adversely affect road-holding and
can lead to loss of vehicle control.<

147n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Wheel change>Wedge (wheel chock)
Next to the jack
>Lug wrench, centering pin, spark-
plug wrench and lifting handle
In the luggage compartment under
the floor mat
>Spare wheel
Stored under the luggage compart-
ment on the vehicle floor and
protected with a storage tray.
Remove the spare wheelZ3 coupe:
Remove the floor of the storage
compartment (arrow) at the right in the
luggage compartment.
Release the Velcro
¨ fastener and
remove the warning triangle.
367de317
Z3 cou
pe
Z3 roadster:
Loosen the screw connection on the
floor of the storage tray (arrow) at the
right in the luggage compartment and
remove the compartment.367de318
Z3 roadster

148n
Wheel changeRaise and secure the floor panel in the
luggage compartment.
The spare wheel is secured at two
mounting points.
Left-hand attachment point Ð arrow 1.
Right-hand attachment point Ð arrow 2.367de312
Right-hand attachment point:
Place the spark plug wrench on the
hexagon nut and, using the alignment
tool to assist you, loosen the hexagon
nut. Remove the hexagon nut and the
protective cap.
Place the hexagon nut in a secure
location.< 367de268
Left-hand attachment point:
Take the lifting handle from the tool kit,
lower it on the rope and fit it on the
hexagon nut. Hold the rope at the top
and unscrew the nut with the lifting
handle.367de269

149n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Wheel changePull the lifting handle up until the spare
wheel tray is lifted slightly. At the same
time, compress the locking spring
(arrow). This releases the spare wheel
(weight: approx. 8.8 lbs/4 kg). The
spare wheel must then be held with the
lifting handle.
Using the lifting handle, lower the spare
wheel bracket with storage tray and
spare wheel and place it on the ground.
Do not put your feet beneath the
rear of the vehicle because the
spare wheel could fall as it is being
lowered.< 367de270
Pull the storage tray with the spare
wheel completely out of the spare
wheel bracket toward the rear.367de276
Lift the spare wheel at the front. Lay it
down toward the rear next to the
storage tray and with the valve facing
upward. Quickly unscrew the valve
extension from the valve of the spare
wheel. Unscrew the valve cap from the
storage tray and mount it on the spare
wheel.
When the valve extension is
screwed onto or off of the spare
wheel, you may hear a brief hissing as
air escapes.<
The procedure for removing the spare
wheel is also illustrated with picto-
graphs located on the floor mat of the
luggage compartment.367de277

150n
Wheel change
The wheel with the flat tire cannot
be placed in the spare wheel
bracket in the place of the spare
wheel.<
There is a plastic bag in the onboard
tool kit. Put the flat tire and the storage
tray into this bag.
Do not reposition the storage tray
in the spare wheel bracket without
the spare wheel.<
Using the lifting handle, pull the spare
wheel bracket upward until the spring
retainer catches. Secure the bracket
with the hexagon nut Ð ensure that it is
tightened down correctly.
The spare wheel is returned to its orig-
inal position in the same manner as it is
removed, however in the reverse order.
When doing so, make sure that:
>The valve extension is mounted on
the spare wheel valve
>The storage tray is facing toward the
rear (see arrow) with the valve exten-
sion pointing to the inside left to
ensure that it is possible to check the
tire inflation pressure.367de271
Mount the spare wheel1. Secure the vehicle to prevent it from
rolling:
Place the wedge against the rear
surface of the front tire on the side
opposite the side being raised. If the
vehicle is parked on a downward
slope, place the wedge securely in
front of the tire. If the wheel must be
changed on a surface with a more
severe slope, take additional precau-
tions to secure the vehicle from
rolling
2. Wheels with full wheel covers
*:
reach into the ventilation openings
and pull the cover off
3. For wheels equipped with hub
covers
*: position a screwdriver in the
slot and pry the hub cover off
4. Loosen the lug bolts g a turn

151n
IndexDataTechnologyRepairsMaintenanceControlsOverview
Wheel change5. Position the jack on the vehicle:
>Plastic elements are mounted on
the vehicle floorpan for positioning
the jack. These positions (refer to
the arrows) are located approx.
16 in (40 cm) from the front wheel
opening and
10 in (25 cm) from the rear wheel
opening
>If necessary, remove snow, ice or
mud from the plastic elements
>Screw the jack arm up until the
jack just fits under the vehicle367de382
>Position the jack at the jacking
point closest to the flat tire so that
the jack base is vertically below
the jacking point and the entire
surface of the head of the jack will
move squarely into the recess of
the plastic element when the jack
is cranked
>Crank the jack until the wheel you
are changing is off of the ground.
6. Unscrew the lug bolts and remove
the wheel
7. Remove accumulations of mud or
dirt from the mounting surfaces of
the wheel and hub. Clean the lug
bolts367de065
8. Take the centering pin from the
vehicle tool kit. Insert the centering
pin together with the plastic cap
into one of the bolt sockets
9. Position the spare wheel and screw
at least two lug bolts into opposite
bolt sockets. Remove the centering
pin
10. Screw in the remaining lug bolts.
Tighten all the bolts down correctly
11. Lower the jack and remove it from
beneath the vehicle
12. Tighten the lug bolts in a diagonal
pattern367de066

152n
Wheel change13. Wheels with full wheel covers:
Place the wheel cover with the
valve opening over the valve. Use
both hands to press the cover
securely onto the rim
14. Check and correct the inflation
pressure at the earliest opportunity.
Use only the full wheel cover
installed by the factory. Other
wheel covers may not fit securely. The
full wheel cover may not be installed on
the spare wheel because the cover
could be damaged.<
The jack is designed for changing
wheels only. Do not attempt to lift
a different vehicle model or any other
type of load with the jack. To do so
could lead to property damage or
personal injury.
To ensure continued safety, check the
tightness of the lug bolts at the earliest
opportunity (torque specification:
72 lbs ft [100 Nm]).<
If light-alloy wheels other than Original
BMW light-alloy wheels have been
mounted, it may be necessary to use
different lug bolts for those wheels.
Replace the defective tire as soon as
possible and have the new wheel/tire
balanced.
Driving with the spare wheelDrive cautiously and do not exceed a
speed of 50 mph (80 km/h).
Be aware that vehicle handling will be
altered. Slower brake response time,
longer braking distances and changed
steering characteristics may be antici-
pated when approaching limit condi-
tions.
Only one spare wheel may be
mounted at any time. Mount a
wheel and tire with the same size and
specifications as the others at the
earliest possible opportunity. Maintain
the specified tire inflation pressures,
refer to the table on page 27.<