Mercedes-Benz C-Class Operator's Manual page 312

Tire pressure
310
wear excessively and/or unevenly
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have an adverse effect on fuel consumption
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Overinflated tires
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WARNING
Tires with excessively high pressure can burst
because they are damaged more easily by
road debris, potholes etc. In addition, they
also suffer from irregular wear, which can
severely impair the braking properties and the
driving characteristics. There is a risk of an
accident.
Avoid tire pressures that are too high in all the
tires, including the spare wheel.
Overinflated tires may:
increase the braking distance
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adversely affect handling
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wear excessively and/or unevenly
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have an adverse effect on ride comfort
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be more susceptible to damage
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Maximum tire pressures
Example: maximum permissible tire pres-
:
sure
Never exceed the maximum permissible tire
inflation pressure. Always observe the rec-
ommended tire pressure for your vehicle
when adjusting the tire pressure
( page 307).
Y
The actual values for tires are vehicle-
i
specific and may deviate from the values in
the illustration.
Checking the tire pressures
Important safety notes
Observe the notes on tire pressure
( page 307).
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Information on air pressure for the tires on
your vehicle can be found:
on the vehicle's Tire and Loading Informa-
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tion placard on the B-pillar
on the tire pressure label on the fuel filler
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flap ( page 148)
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in the "Tire pressure" section
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Checking tire pressures manually
To determine and set the correct tire pres-
sure, proceed as follows:
Remove the valve cap of the tire that is to
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be checked.
Press the tire pressure gauge securely onto
X
the valve.
Read the tire pressure and compare it to
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the recommended value on the Tire and
Loading Information placard or the tire
pressure table ( page 307).
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If the tire pressure is too low, increase the
X
tire pressure to the recommended value.
If the tire pressure is too high, release air.
X
To do so, press down the metal pin in the
valve, using the tip of a pen for example.
Then check the tire pressure again using
the tire pressure checker.
Screw the valve cap onto the valve.
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Repeat these steps for the other tires.
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Tire pressure loss warning system
General notes
While the vehicle is in motion, the tire pres-
sure loss warning system monitors the set
tire pressure using the rotational speed of the
wheels. This enables the system to detect
significant pressure loss in a tire. If the speed
of rotation of a wheel changes as a result of a