1998 BMW 740I Owners Manual

136n
Approved wheel and tire specificationsNote the tire and wheel data in the offi-
cial documents of the car. If sizes not
approved by the manufacturer are
mounted, an entry in the vehicle's doc-
uments may be necessary. Comply with
local legislation. Tire specifications Light-alloy wheel
All season tires
235/60 R 16 100 H M+S 7.5Jx16
8Jx16
Summer tires
235/60 R 16 100 W 7.5Jx16
8Jx16
245/55 R 16 100 W 8Jx16
235/50 ZR 18 8Jx18
Rear: 255/45 ZR 18 9Jx18
9.5Jx18
Winter tires (M+S)
215/65 R 16 98 Q 7.5J x 16
235/60 R 16 100 Q 7.5Jx16
8Jx16
245/55 R 16 100 Q 8Jx16
The use of rims and wheel bolts
that do not meet the specifications
of the original factory-installed equip-
ment 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 radial bias-
belted or bias-ply tires, etc. Mixing tire
types will adversely affect roadholding
and can lead to loss of vehicle control.<

137n
RepairsIndexOverview Controls Car care Technology Data
HoodTo unlock the hoodPull the lever located at the lower left-
hand side of the instrument panel.
Do not work on your vehicle with-
out appropriate skills. Switch off
the engine and allow it to cool down be-
fore working in the engine compart-
ment.
Always disconnect the battery before
working on any electrical systems or
equipment. Comply with all applicable
instructions and warnings. Failure to
work in an informed, professional man-
ner when servicing components and
materials constitutes a safety hazard for
vehicle occupants and other road
users. If you are not familiar with the
guidelines, please have the operations
performed by your authorized BMW
center.< 380de071
To openPull the release handle and open the
hood.380de635
To closePress down lightly on the hood at the
locations shown in the illustration (ar-
rows) or drop it from approx. 4 inches
(10 cm) so that it audibly engages.
To avoid injuries, be sure that the
travel path of the hood is clear
when it is closed, as with all closing
procedures.
If it is determined that the hood is not
completely closed while driving, stop
immediately and close it securely.< 380de634

138n
Engine compartment – BMW 740i/L
380us665

139n
RepairsIndexOverview Controls Car care Technology Data
Engine compartment – BMW 740i/L1 Brake fluid reservoir147
2 Power steering fluid reservoir/
Level control system148
3 Auxiliary terminal for jump
starting179
4 Engine oil dipstick143
5 Engine oil filler neck143
6 Coolant expansion tank146
7 Reservoir for headlamp
and windshield washer system142
8 Fuse box176

140n
Engine compartment – BMW 750iL
380us666

141n
RepairsIndexOverview Controls Car care Technology Data
Engine compartment – BMW 750iL1 Brake fluid reservoir147
2 Power steering fluid reservoir/
Level control system148
3 Auxiliary terminal for jump
starting179
4 Engine oil filler neck143
5 Coolant expansion tank146
6 Engine oil dipstick143
7 Reservoir for headlamp
and windshield washer system142
8 Fuse box176

142n
Washer fluids Washer nozzlesHeadlamp
* and
windshield washer system
The filling capacity is approx. 4.7 US
quarts (4.5 liters) for the windshield
washer system or approx. 6.3 US
quarts (6.0 liters) together with the
headlamp washer system.
Fill with water and - when needed - with
a washer antifreeze (according to man-
ufacturer's recommendations).
We recommend that you mix the
washer fluid before adding it to
the reservoir.< 380de082
Antifreeze agents or intensive
windshield cleaning agents for the
washer systems are highly flammable.
For this reason, keep them away from
sources of flame and store them only in
their original containers. Store them so
that they are inaccessible to children.
Comply with the instructions on the
containers.<
Windshield washerThe spray from the nozzles should be
directed so as to ensure effective
cleaning, even at high speeds.
Use a needle to adjust the nozzles as
required, or have them adjusted at your
authorized BMW center.Headlamp washer systemHave the nozzles adjusted by your
BMW center as required.

143n
RepairsIndexOverview Controls Car care Technology Data
Engine oilChecking the engine oil1 Park the vehicle on a level surface
2 Shut the engine off after it has
reached normal operating tempera-
ture
3 After approx. 5 minutes, pull the dip-
stick out and wipe it off with a clean
lint-free cloth, paper towel, or similar
material
4 Push the dipstick all the way into the
guide tube and pull it out again
5 The oil level should be in between the
two graduations on the dipstick.
As with fuel economy, oil consumption
is directly influenced by your driving
style and vehicle operating conditions.380de076
The oil volume between the two marks
on the dipstick corresponds to approx.
1.1 US quarts (1 liter). Do not fill to be-
yond the upper mark on the dipstick.
Excess oil will damage the engine.460de189
Adding engine oilWait until the level has dropped to just
above the lower mark before adding oil.
However, do not wait until the oil drops
below the lower mark.
BMW engines are designed to op-
erate without oil additives. The
use of additives could lead to damage
in some cases. This is also true for the
automatic transmission, the differential
and the power steering system.< 380de077