Mercedes-Benz 420 SEL 1988, Руководство пользователя

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Wheels, Tires
Replace wheels or tires with the same
designation, manufacturer and type
as shown on the original part. See
your authorized MERCEDES-BENZ
dealer for further information.
Warning!
Do not mix different tire construc­
tion types (i.e. radial, bias, and
bias-belted) on your car because
handling may be adversely affected
and may result in loss of control.
See your authorized MERCEDES-
BENZ dealer for information on tested
and recommended wheels and tires
for summer and winter operation.
They can also offer more advice con­
cerning tire service and purchase.
Front tires should be replaced in sets.
If possible, the spare tire should be
used on the rear wheels. We recom­
mend that you break in new tires for
approx. 100 km (60 miles) at mod­
erate speed.
It is imperative that the wheel mount­
ing bolts be retightened after approx.
800 km (500 miles).
On new vehicles retightening is
carried out during the 1st 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 Ib-ft).
For tire specifications, refer to “Tech­
nical Data” .
Rotating wheels:
The wheels can be rotated according
to the degree of tire wear while retain­
ing the same direction of travel.
Rotating, however, should be carried
out before the characteristic tire wear
pattern (shoulder wear on front
wheels and tread center wear on rear
wheels) becomes visible at a mileage
of 5000-10000 km (3000-
6000 miles) as otherwise the driving
properties deteriorate.
Underinflated tires due to a slow leak
(e.g. due to a nail in the tire) may
cause damage such as tread separa­
tion, bulging, etc. Regular tire pres­
sure checks (including the spare tire)
at intervals of no more than 14 days
are therefore essential. Keep in mind
that warm tires have a higher pressure
than cold tires. (See tire pressure
chart on fuel filler door and the last
page.) If a tire constantly loses air, it
should be inspected for damage.
Use only genuine MERCEDES-BENZ
wheel bolts (identified by Mercedes
star).
Thoroughly clean the inner side of the
wheels any time you rotate the wheels
or wash vehicle underside.
Dented or bent rims 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. Re­
move burrs, if there are any.
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