Lowering the vehicle after a wheel change
&
WARNING Risk of accident due to incor‐
rect tightening torque
The wheels could come loose if the wheel
bolts or wheel nuts are not tightened to the
prescribed torque.
#
Ensure that the wheel bolts or wheel
nuts are tightened to the prescribed
tightening torque.
#
If you are not sure, do not move the
vehicle. Contact a qualified specialist
workshop and have the tightening tor‐
que checked immediately.
Requirements:
R
The new wheel has been installed
(
/
page 220).
#
Place the adapter and the ratchet on the hex‐
agon head nut of the jack such that the letter‐
ing AB/DOWN is visible.
#
To lower the vehicle: turn the ratchet of the
jack counter-clockwise.
#
Steel wheels: tighten the wheel bolts or
wheel nuts evenly in a crosswise pattern in
the sequence indicated (
1
to
5
) and to a
maximum of 200 Nm.
#
Alloy wheels: tighten the wheel bolts or
wheel nuts evenly in a crosswise pattern in
the sequence indicated (
1
to
5
) and to a
maximum of 180 Nm.
#
Check the tire pressure of the newly installed
wheel and adjust it if necessary.
Vehicles with the tire pressure monitor sys‐
tem: all installed wheels must be equipped with
functioning sensors.
#
Retighten the wheel bolts to the specified
tightening torque after the vehicle has been
driven 31 miles (50 km).
%
When using a wheel or spare wheel with a
new or newly painted disk wheel, have the
wheel bolts or wheel nuts retightened again
after approximately 621 to 3,107 miles
(1,000 to 5,000 km). Observe the specified
tightening torque.
Information on wheel and tire combinations
General notes
Retreaded tires are not checked and recommen‐
ded by Mercedes-Benz as it is not always possi‐
ble to detect previous damage after retreading.
For this reason, Mercedes-Benz cannot guarantee
their driving safety. Do not use used tires when
their previous usage is unknown.
For safety reasons, Mercedes-Benz recommends
that you only use tires, wheels and accessories
which have been approved by Mercedes-Benz for
your vehicle.
These tires have been specially adapted for use
with driving safety systems, such as ABS or
ESP
®
.
Only use tires, wheels and accessories that have
been checked and recommended by Mercedes-
Benz. Certain characteristics, such as handling,
vehicle noise emissions, fuel consumption, etc.
may otherwise be adversely affected. Other
wheel sizes may cause the tires to come into con‐
tact with the vehicle body and axle components
when under load. This may result in damage to
the tire or the vehicle.
Mercedes-Benz is not responsible for any damage
caused by using tires, wheels or accessories
other than those recommended.
Information on tires, wheels and permissible
combinations can be obtained at a qualified spe‐
cialist workshop.
The smaller the cross-section of a tire of a spe‐
cific wheel size, the worse the driving comfort on
poor road surfaces. Ride and damping comfort
are reduced and the risk increases that when you
drive over obstacles, damage to wheels and tires
may result.
If you change wheel size on your vehicle, check it
is assigned to the correct wheel size category
(
/
page 218). If the assignment changes without
recoding the control units in the vehicle, the
speedometer will not display the speed accu‐
rately. Driving safety systems and driving systems
may then be operationally impaired or may detect
a malfunction and switch themselves off.
Wheels and tires 221
