
111n
IndexDataTechnologyRepairsCar careControlsOverview
Winter operation Power steering
Do not shift down on slick road 
surfaces. Doing so could cause 
the rear wheels to lose traction and 
skid, resulting in a loss of vehicle con-
trol.<
Depress the clutch during hard 
braking on road surfaces that pro-
vide only poor or uneven traction.<
Skid control Depress the clutch and release the ac-
celerator pedal, or place the selector 
lever of the automatic transmission into 
the "Neutral" position. Countersteer 
carefully and attempt to regain control 
of the vehicle.
ParkingEngage 1st or reverse gear. If your car 
is equipped with an automatic trans-
mission, place the selector lever in 
Park. On vehicles with manual trans-
mission, also apply the parking brake 
when parking on inclined surfaces. In 
order to prevent the parking brake lin-
ings from locking due to frost or corro-
sion, dry them by gently applying the 
parking brake as the vehicle is coming 
to a stop. Make sure that following traf-
fic is not endangered.
The brake lamps do not light up 
when the parking brake is ap-
plied.<
High steering effort:
Contact an BMW center immediately to 
have this system inspected. 
If the power steering fails, in-
creased effort will be required to 
steer the vehicle.< 

116n
Wheel and tire combinations The right choice Use only BMW-approved tires. Refer to 
page 118. 
Due to the high speeds this vehicle can 
reach, the use of specific brands, spec-
ifications and sizes is mandatory. Con-
sult any BMW center for details. Com-
ply with local/national regulations.
The correct wheel-tire combina-
tion affects different systems such 
as ABS, ATC and DSC. The function of 
these systems is impaired if improper 
wheel-tire combinations are used.
For this reason, use only tires of the 
same brand and tread pattern. In the 
event of a flat tire, for example, remount 
the approved wheel-tire combination as 
soon as possible.<
Codes on tires and wheels The tire codes will aid you in selecting 
the correct tire. 
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 = above 167 mph (270 km/h)
ZR = above 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)
205/60 R
1591W
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. 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
7 x 15 H 2
J 

117n
IndexDataTechnologyRepairsCar careControlsOverview
Winter tiresChoosing the right tireBMW recommends winter tires (M+S 
radial tires) for driving in adverse winter 
road conditions. Although all-season 
M+S tires provide better winter traction 
than standard summer tires with H, V, 
W, Y and ZR speed ratings, they gener-
ally fail to provide the same levels of 
performance as standard snow tires in 
winter driving. 
In the interest of safe tracking and 
steering response, install winter tires 
made by the same manufacturer having 
the same tread configuration on all four 
wheels.
Mount only winter tires approved by 
BMW. Any BMW center will be glad to 
provide you with information on the 
best winter tires for your particular driv-
ing conditions.Never exceed the maximum speed 
for which the tires are rated.
Unprofessional attempts by laymen to 
service tires can lead to damage and 
accidents.
Have this work performed by skilled 
professionals only. Any BMW center 
has the required technical knowledge 
and the proper equipment and will be 
happy to assist you.<
Tire condition, tire pressureWinter tires display a perceptible loss in 
their ability to cope with winter driving 
conditions once the tread wears to 
below 0.16 inches (4 mm), and should 
thus be replaced.
Comply with the specified tire inflation 
pressures Ð and be sure to have the 
wheel and tire assemblies balanced 
every time you change the tires.
StorageAlways store tires in a cool, dry place. 
Store them away from light whenever 
possible. Protect the tires against con-
tact with oil, grease and fuel.Snow chains
*
The use of narrow-link BMW snow 
chains on summer or winter tires is 
approved only in pairs and only on the 
rear wheels. Comply with all manufac-
turer's safety precautions when mount-
ing the chains. 

118n
Approved wheel and tire specifications Tire specifications Steel rim (wheel rim) Light-alloy wheel
BMW 323i
All-Season
195/65 R 15 91 H Ð 6.5Jx15
Summer tires
195/65 R 15 91 H Ð 6.5Jx15
205/60 R 15 91 H Ð 6.5Jx15
7Jx15
205/55 R 16 91 H
225/50 R 16 92 W
225/50 ZR 16Ð 7Jx16
225/45 R 17 91 W Ð 8Jx17
Front: 225/45 ZR 17 Ð 7.5Jx17
Rear: 245/40 ZR 17  Ð 8.5Jx17
Winter tires
195/65 R 15 91 Q M+S 6.5Jx15 6.5Jx15
205/60 R 15 91 Q M+S 6.5Jx15 6.5Jx15
7Jx15
205/55 R 16 91 Q M + S
225/50 R 16 92 Q M + S7Jx16 7Jx16
225/45 R 17 91 Q M + S Ð 8Jx17
Space-saver spare tire
T 125/90 R 15 96 M 3.5Bx15 Ð
T 125/90 R 16 98 M 3.5Bx16 Ð
Comply with the specifications for tires and wheels in the vehicle's manuals. 
If you install tire sizes not approved by the manufacturer, an entry in the vehicle 
documents may be necessary.
Snow chains
* 
You cannot mount snow chains with the 
following tires:
225/50 R 16 92 W
225/50 ZR 16
225/45 ZR 17
245/40 ZR 17
225/45 R 17 91 W
225/50 R 16 92 Q/T/H
225/45 R 17 91 Q/T/HMixed tiresFor details concerning tire manufactur-
ers for mixed tires, refer to the original-
equipment specifications.  

119n
IndexDataTechnologyRepairsCar careControlsOverview
Approved wheel and tire specifications Tire specifications Steel rim (wheel rim) Light-alloy wheel
BMW 328i
All-Season
205/55 R 16 91 H Ð 7Jx16
Summer tires
205/55 R 16 91 H
225/50 R 16 92 H
225/50 ZR 16Ð 7Jx16
225/45 R 17 91 H Ð 8Jx17
Front: 225/45 ZR 17 Ð 7.5Jx17
Rear: 245/40 ZR 17  Ð 8.5Jx17
Winter tires
205/55 R 16 91 Q M + S
225/50 R 16 92 Q M + S7Jx16 7Jx16
225/45 R 17 91 Q M + S Ð 8Jx17
Space-saver spare tire
T 125/90 R 16 98 M 3.5Bx16 Ð
Comply with the specifications for tires and wheels in the vehicle's manuals. 
If you install tire sizes not approved by the manufacturer, an entry in the vehicle 
documents may be necessary.
Snow chains
*
You cannot mount snow chains with the 
following tires: 
225/50 R 16 92 W
225/50 ZR 16
225/45 ZR 17
245/40 ZR 17
225/45 R 17 91 W
225/50 R 16 92 Q/T/H
225/45 R 17 91 Q/T/HMixed tiresFor details concerning tire manufactur-
ers for mixed tires, refer to the original-
equipment specifications.  

128n
Coolant
Do not add coolant to the cooling 
system when the engine is hot. If 
you attempt to do so, escaping coolant 
can cause burns.
To avoid the possibility of damage later 
on, never use anything other than fac-
tory-approved, nitrite and amino-free 
extended-duty antifreeze with corrosion 
inhibitor. Your BMW center is familiar 
with the official specifications.
Antifreeze and anticorrosion agents are 
hazardous to health. You should always 
store them in their original container 
and in a location that is inaccessible to 
children. Extended-duty antifreeze with 
corrosion inhibitor contains ethylene 
glycol, a flammable substance. For this 
reason, do not spill antifreeze with cor-
rosion inhibitor on hot engine parts. It 
could ignite and cause serious burns.<
Comply with the applicable envi-
ronmental laws regulating the dis-
posal of extended-duty antifreeze with 
corrosion inhibitor.<
Checking coolant levelCorrect coolant level when the engine 
is cold (approx. 68 7 or 20 6):
Unscrew the cap from the expansion 
tank.
The coolant level is correct when the 
end of the red float is aligned with the 
upper edge of the filler opening (refer  
to the arrow in the illustration), or max.  
0.8 in (2 cm) higher, that is up to the 
second mark on the float (see also the 
schematic diagram next to the filler 
opening).460de053
Add coolant Wait until the engine cools before re-
moving the cap from the expansion 
tank. The needle of the coolant gauge 
in the instrument cluster must be lo-
cated in the blue zone. If it is not, there 
is a danger of scalding.
1 Turn the cap slightly counterclock-
wise in order to allow accumulated 
pressure to escape. Then open.
2 If the coolant is low, slowly add 
coolant until the correct level is 
reached Ð do not overfill.
The coolant is a mixture of water and 
extended-duty antifreeze with corrosion 
inhibitor. Always maintain the pre-
scribed all-season 50:50 mixture ratio 
for year-round protection against inter-
nal corrosion. No other additives are 
required.
Replace the coolant every four years. 

132n
Washing your car You can have your BMW washed in 
an automatic car wash, even when it 
is new. Car wash systems that do not 
employ brushes are preferable.
Wipe away tough dirt and loosen and 
remove dead insects before washing 
the car.
In order to avoid spots, do not wash the 
vehicle when the hood is warm, or dur-
ing or immediately after exposure to 
strong sunlight.
When using an automatic car wash, be 
sure that:
>The car wash system is suited for the 
dimensions of your vehicle.
>No damage will occur on vehicles 
with attached body accessories (such 
as spoilers or antennas). Consult the 
car wash operator if necessary.
>The wheels and tires of your vehicle 
cannot be damaged by the convey-
ance devices of the car wash system.
>The vehicle is cleaned with minimum 
brush pressure, and that ample water 
is available for washing and rinsing.Vehicles with rain sensor
*:
Clean the windshield regularly. Wax 
from automatic car washes or insects 
can cause malfunctions in the function 
of the rain sensor
*.
Turn the rain sensor
* off (refer to 
page 69) when passing through an 
automatic car wash. Failure to do so 
could result in damage caused by unin-
tended wiper activation.<
Parts of the car that are inaccessible to 
the automatic washer Ð such as door 
sills, door and hood edges, etc. Ð 
should be cleaned by hand.
In the winter months, it is especially 
important to be sure that the car is 
washed on a regular basis. Large quan-
tities of dirt and road salt are difficult to 
remove, and they also cause damage 
to the vehicle.
If spray wands or high-pressure 
washers are used, be sure to 
maintain an adequate distance between 
the spray source and the vehicle's sur-
face. Inadequate distance and exces-
sive pressure can damage or weaken 
the finish, making it more susceptible to 
subsequent attack. In addition, mois-
ture could penetrate to vehicle compo-
nents, leading to long-term damage.<
When cleaning the headlamps, 
please observe the following: 
>Do not clean by wiping with a dry 
cloth (this causes scratches). Never 
use abrasives or strong solvents.
>Remove dirt and contamination (such 
as insects) by soaking with BMW Car 
Shampoo and then rinsing with plenty 
of water.
>Always use a deicer spray to remove 
accumulated ice and snow Ð never 
use a scraper.<
After washing the car, apply the 
brakes briefly to dry them. Braking 
efficiency might otherwise be reduced 
by the moisture and the brake rotors 
could also be corroded.<
Caring for your car  

133n
IndexDataTechnologyRepairsCar careControlsOverview
Caring for your carExterior finish To provide effective corrosion protec-
tion, multilayer paintwork is applied at 
the factory. Cataphoretic immersion 
priming techniques are supplemented 
using special body-cavity protectants, 
with the application of specially-devel-
oped and extensively tested materials.
A layer of flexible PVC is first applied 
to the undercarriage. Following this, a 
comprehensive undercoating treat-
ment with a wax-based protectant is 
applied. Regular maintenance makes 
an important contribution to maintaining 
the safety and value of your vehicle.
Increasing awareness of the effects of 
harmful environmental factors on vehi-
cle finishes have urged paint and vehi-
cle manufacturers to initiate ongoing 
programs designed to further improve 
the durability of their finishes. Despite 
this, environmental factors that occur 
locally or regionally can have negative 
effects on the finish of your vehicle. 
These should guide you in determining 
the frequency and extent of your efforts 
to maintain the vehicle finish.
Depending upon material and type of 
impact (perforation of paint layer), phys-
ical stresses from sand, road salt, gravel, etc., can cause corrosion to 
start extending beneath the finish, start-
ing at the point of impact.
Road dirt, tar spots, dead insects, ani-
mal droppings (strong alkali effect) and 
tree excretions (resins and pollen) all 
contain substances capable of causing 
damage when allowed to remain on the 
finish of your vehicle for any period of 
time. This includes spots, etching, flak-
ing, and separations in the top coat.
In industrial areas, deposits of flue dust, 
lime, oily soot, precipitation containing 
sulfur-dioxide (acid rain) and other envi-
ronmental pollutants will damage the 
car's finish unless adequate care is pro-
vided Ð even though this is generally 
limited to the outside horizontal sur-
faces.
In coastal regions, high levels of atmo-
spheric salt and humidity promote cor-
rosion.
In tropical zones, temperatures of over 
105 7 (40 6) in the shade prevail, in 
addition to heavy ultraviolet radiation 
and high humidity. Under those condi-
tions, light paints can reach tempera-
tures up to 175 7 (80 6) and dark 
paints up to 250 7 (120 6).
Caring for the vehicle finish Regular washing is a preventive mea-
sure against long-term effects from 
substances that are harmful to the vehi-
cle's finish, especially if you drive your 
vehicle in areas with high levels of air 
pollution or aggressive natural sub-
stances (tree resins, pollen).
Nevertheless, you should immediately 
remove especially aggressive sub-
stances. Failure to do so can lead to 
changes in the paint's chemical struc-
ture or to discoloration. Gasoline spilled 
during refueling, oil, grease and brake 
fluid should always be cleaned away 
immediately, as should bird droppings.
Any contamination remaining on the 
surface of the vehicle will be especially 
conspicuous after washing. Use clean-
ing fluid or alcohol with a clean cloth or 
cotton pad to remove. Remove tar spots 
with tar remover. After cleaning, the 
affected areas should be waxed to 
ensure continued protection.
Use cleaning and car-care 
products that you can obtain at 
your BMW center.<