Mercedes-Benz 350 SDL Owner's Manual page 77

Tire replacement:
Front tires should be replaced in sets.
Furthermore - in the event of tire re­
placement - the spare wheel, if
possible, should be used on the rear
axle.
Rims and tires must be of the same
size.
For dimensions see "Technical Data".
We recommend that you break in new
tires for approx. 100 km (60 miles) at
moderate speed. It is imperative that
the wheel mounting bolts be retighten­
ed after approx 100-500 km (60-
300 miles).
On new vehicles retightening is
carried out during the 1 st inspection.
Retightening is also necessary
whenever wheels are fitted, e.g. when
the spare wheel is used for the first
time or when a set of wheels with
M + S tires is installed.
Tightening torque: 110 Nm (80 ft.lb.).
For rim and tire specifications, refer to
"Technical Data".
Warning!
Worn, old tires can cause acci­
dents. If the tire tread is badly
worn, or if the tires have sus­
tained damage, replace them.
When replacing rims, use only
genuine MERCEDES-BENZ wheel
bolts (identified by Mercedes
star) specified for the rim type.
Failure to do so can result in the
bolts loosening and possibly an
accident.
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 at a mileage of 5000-10 000 km
(3000-6000 miles), before the charac­
teristic tire wear pattern (shoulder
wear on front wheels and tread center
wear on rear wheels) becomes visible,
as otherwise the driving properties
deteriorate.
Note:
Thoroughly clean the inner side of the
wheels any time you rotate the wheels
or wash vehicle and underside.
The use of retread tires is not recom­
mended. Retread tires may adversely
affect the handling characteristics and
safety of the vehicle.
Dented or bent rims cause tire pres­
sure 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. Re­
move burrs, if there are any.
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