Wheels And Tyres 395; Notes On Noise Or Unusual Handling Char- Acteristics; Notes On Regularly Inspecting Wheels And Tyres; Notes On Snow Chains - Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual

Notes on noise or unusual handling characteris-
tics
Make sure there are no vibrations, noises or
unusual handling characteristics when the vehicle
is in motion. This may indicate that the wheels or
tyres are damaged. Hidden tyre damage could
also be causing the unusual handling characteris-
tics.
If you suspect that a tyre is defective, reduce your
speed immediately and have the tyres and wheels
checked at a qualified specialist workshop.

Notes on regularly inspecting wheels and tyres

& WARNING Risk of injury due to damaged
tyres
Damaged tyres can cause tyre pressure loss.
Check the tyres regularly for signs of
#
damage and replace any damaged tyres
immediately.
& WARNING Risk of aquaplaning due to
insufficient tyre tread
Insufficient tyre tread will result in reduced
tyre grip.
The risk of aquaplaning is increased on wet
roads, especially when the speed of the vehi-
cle is not adapted to suit the conditions.
Thus, you should regularly check the
#
tread depth and the condition of the
tread across the entire width of all tyres.
Minimum tread depth for:
Summer tyres: 3 mm
R
M+S tyres: 4 mm
R
For safety reasons, replace the tyres
#
before the legally-prescribed limit for the
minimum tread depth is reached.
Carry out the following checks on all wheels regu-
larly, at least once a month or as required, for
example, prior to a long journey or driving off-
road:
Check the tyre pressure (
/
R
P223 0288 02
Visually inspect wheels and tyres for damage.
R
Check the valve caps.
R
Visual check of the tyre tread depth and the
R
tyre contact surface across the entire width.
The minimum tread depth for summer tyres is
3 mm and for winter tyres 4 mm.

Notes on snow chains

& WARNING Risk of accident due to incor-
rect snow chain fitting
If you have fitted snow chains to the front
wheels, the snow chains may drag against the
vehicle body or chassis components.
This could cause damage to the vehicle or the
tyres.
Never fit snow chains on the front
#
wheels.
Only fit snow chains on the rear wheels
#
in pairs.
page 396).

Wheels and tyres 395