rims MERCEDES-BENZ C240 2001 W203 Owner's Manual

72 Restraint systems
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Safety guidelines for the seat belt, emergency
tensioning retractor and airbag
Wa r n i n g !
• Damaged seat belts or belts that were highly
stressed in an accident must be replaced and
their anchoring points must also be checked.
Use only belts installed or supplied by an
authorized Mercedes-Benz Center.• Airbags and “ETR’s” are designed to function
on a one-time-only basis. An airbag or
emergency tensioning retractor (ETR) that was
activated must be replaced.• No modifications of any kind may be made to
any components or wiring of the “SRS”. This
includes changing or removing any component
or part of the “SRS”, the installation of
additional trim material, badges etc. over the
steering wheel hub, front passenger airbag
cover, door trim panels, or door frame trims,
and installation of additional electrical /
electronic equipment on or near “SRS”
components and wiring. Keep area between
airbags and occupants free from objects (e.g.
packages, purses, umbrellas, etc).
• Do not pass belts over sharp edges.• Do not make any modification that could
change the effectiveness of the belts.• Do not use handles above doors for placing
such items as coat hangers etc.•An airbag system component within the
steering wheel gets hot after the airbag has
inflated. Do not touch.• Improper work on the system, including
incorrect installation and removal, can lead to
possible injury through an unintended
activation of the “SRS”.• In addition, through improper work there is a
risk of rendering the “SRS” inoperative or
causing unintended airbag deployment. Work
on the “SRS” must therefore only be performed
by an authorized Mercedes-Benz Center.

306 Tires, Wheels
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Wheels
Replace rims or tires with the same designation,
manufacturer and type as shown on the original part.
See your authorized Mercedes-Benz Center for further
information.
See your authorized Mercedes-Benz Center for
information on tested and recommended rims and tires
for summer and winter operation. They can also offer
advice concerning tire service and purchase.
Tire replacement
Front and rear tires should be replaced in sets. Rims
and tires must be of the correct size and type. For
dimensions, see “Technical Data”.
We recommend that you break in new tires for
approximately 60 miles (100 km) at moderate speed.
Wa r n i n g !
The jack is designed exclusively for jacking up the
vehi c le a t the j ack take-up b ra ckets b ui lt i nto eit her
side of the vehicle. To help avoid personal injury,
use the jack only to lift the vehicle during a wheel
change. Never get beneath the vehicle while it is
supported by the jack. Keep hands and feet away
from the area under the lifted vehicle. Always
firmly set parking brake and block wheels before
raising vehicle with jack.Do n ot d is engage parki n g brake w hil e t he vehi c le i s
raised. Be certain that the jack is always vertical
when in use, especially on hills. Always try to use
the jack on level surface. Be sure that the jack arm
is fully seated in the jack take-up bracket. Always
lower the vehicle onto sufficient capacity
jackstands before working under the vehicle.

307 Tires, Wheels
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cluster displayPractical hintsCar care Index It is imperative that the wheel mounting bolts be
fastened to a tightening torque of 110 ft.lb. (150 Nm)
whenever wheels are mounted.
For rim and tire specifications, refer to “Technical Data”.Rotating wheels
The wheels can be rotated according to the degree of
tire wear while retaining the same direction of travel.
Rotating, however, should be carried out as
recommended by the tire manufacturer, before the
characteristic tire wear pattern (shoulder wear on front
wheels and tread center wear on rear wheels) becomes
visible, as otherwise the driving properties deteriorate.
Notes:
Thoroughly clean the inner side of the wheels any time
you rotate the wheels or wash the vehicle underside.
The use of retread tires is not recommended. Retread
tires may adversely affect the handling characteristics
and safety of the vehicle.
Dented or bent rims can cause tire pressure loss and
damage to the tire beads. For this reason, check rims for
damage at regular intervals. The rim flanges must be
checked for wear before a tire is mounted. Remove
burrs, if any.
Check and ensure proper tire inflation pressure after
rotating the wheels. For tire inflation pressure see
inside of fuel filler flap and also page 264.
Wa r n i n g !
Worn, old tires can cause accidents. If the tire tread
is badly worn, or if the tires have sustained
damage, replace them.When replacing rims, use only genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can result in
the bolts loosening and possibly an accident.

308 Tires, Wheels
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Spare wheel
Important!
The spare wheel rim is mounted with a full size tire of
the same type as on the vehicle, and is fully functional.
However, that spare wheel rim is weight optimized and
has a limited service life of 12 000 miles (20 000 km)
use before a standard wheel rim must replace it.
In the case of a flat tire, you may temporarily use the
spare wheel.
Do not operate vehicle with more than one spare wheel
mounted.Spare wheel
The spare wheel rim size is 7 J x 16 H2
(C 240 Canada only - steel rims 6
1/2 J x 16 H2).
In the case of a flat tire or breakdown, you may
temporarily use the spare wheel, while observing the
following restrictions:
•Do not exceed vehicle speed of 50 mph (80 km / h).
•Drive to the nearest repair facility to have the flat
tire repaired or replaced as appropriate.
•Do not operate vehicle with more than one spare
wheel mounted.
For additional information, refer to page 352.
Wa r n i n g !
The spare wheel rim is for temporary use only. Use
for over a total of 12 000 miles (20 000 km)
(aggregate of all uses) may cause wheel rim failure
leading to an accident and possible injuries.

310 Tires, Wheels
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Move vehicle to a level area which is a safe distance
from the roadway.
1. Set parking brake and turn on hazard warning
flasher.
2. Move selector lever to position “P” and turn off
engine (manual transmission to 1st or reverse gear).
3. Prevent vehicle from rolling away by blocking
wheels with wheel chocks (not supplied with
vehicle) or sizable wood block or stone. When
changing a wheel on a hill, place chocks on the
downhill side blocking both wheels of the other
axle. On an level road, place one chock in front of
and one behind the wheel that is diagonally
opposite to the wheel being changed.4. Vehicles with steel rims
Removal of wheel cover:
Reach into two opening of the wheel cover and pull.
P40.10-2356-26

312 Tires, Wheels
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9. Unscrew upper-most wheel bolt and install
alignment bolt (1) supplied in the tool kit. Remove
the remaining bolts. Keep bolt threads protected
from dirt and sand.
10. Remove wheel. Grip wheel from the sides. Keep
hands from beneath the wheels.1Wheel bolt for light alloy rims
2Wheel bolt for steel rims (Canada model C 240)
P40.10-2284-26

314 Tires, Wheels
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13. Using the wrench, tighten the five bolts evenly,
following the sequence illustrated, until all bolts are
tight.
Observe a tightening torque of 80 ft.lb. (110 Nm).14. Vehicles with steel rims
Installation of wheel cover:
Position small wheel cover opening over tire valve
and press wheel cover against wheel rim. Now press
(do not hit) opposite side of wheel cover against
wheel rim until seated. Make certain that the
springs of the wheel cover are firmly seated in the
outer rim of the steel wheel.
P40.10-2286-26
P40.10-2355-26

352 Technical data
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Rims — Tires
Model C 240 (203.061)C 320 (203.064)C 240 (Canada only – incl. spare wheel)
Rims (light alloy)
Wheel offset:7J x 16 H2
1.46 in (37 mm)7J x 16 H2
1. 4 6 i n ( 3 7 m m )(steel rims) 6
1/2 J x 16 H2
1.46 in (37 mm)
All season tires:
Radial-ply tires 205/55 R16 91 H 205/55 R16 91 H 205/55 R 16 91 H
Winter tires:
Radial-ply tires 205/55 R16 91 H M+S 205/55 R16 91 H M+S 205/55 R 16 91 H M+S
Spare wheel
Rim (light alloy)
Wheel offset:7J x 16 H2
1.46 in (37 mm)7J x 16 H2
1. 4 6 i n ( 3 7 m m )
All season tires:
Radial-ply tires 205/55 R16 91 H 205/55 R16 91 H