Mercedes-Benz 190 E 2.6 1989 Owner's Manual page 80

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 con­
struction types (i.e. radial, bias,
and bias-belted) on your car be­
cause 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 concerning
tire service and purchase.
Front tires should be replaced in sets. If
possible, the spare tire should be used
on the rear wheels. 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 retightened after approx.
800 km (500 miles).
78
On new vehicles retightening is carried
out in the course of the 1 st inspection.
Retightening is also necessary when­
ever 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: 110Nm (80 Ib-ft).
For tire specifications, refer to "Techni­
cal Data" .
Note:
The use of retread tires is not recom­
mended. Retread tires may adversely
affect the handling characteristics and
safety of the vehicle.
Rotating wheels:
The wheels can be rotated according
to the degree of tire wear while re­
taining the same direction of travel. Ro­
tating, however, should be carried out
before the characteristic tire wear pat­
tern (shou Ider wear on front wheels
and tread center wear on rear wheels)
becomes visible at a mileage of
5000-10 000 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 pressure
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 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. Remove
burrs, if there are any.