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MOBILITY
Wheels and tires
Vehicle features and options
This chapter describes model-specific equip-
ment, systems, and functions that are currently
available, or may become available in the fu-
ture, even if they are not present in the vehicle.
Additional information:
Vehicle equipment, refer to page 8.
Tire pressure
General information
The tire condition and tire pressure influence
the following:
▷
The service life of the tires.
▷
Driving safety.
▷
Driving comfort.
▷
Electrical consumption.
Safety information
Warning
A tire with too little or no tire inflation pres-
sure may heat up significantly and sustain
damage. This will have a negative impact
on aspects of handling such as steering and
braking response. There is a risk of accident.
Regularly check the tire inflation pressure,
and correct it as needed, for instance twice
a month and before a long trip.
Tire pressure specifications
In the tire pressure table
The tire pressure table contains all tire infla-
tion pressure specifications for given tire sizes
at ambient temperature. The tire inflation pres-
330
Wheels and tires
Online Edition for Part no. 01405A88D67 - VI/23
sure specifications apply to the tire sizes ap-
proved by the vehicle manufacturer for the cor-
responding vehicle types.
To identify the correct tire inflation pressure,
please note the following:
▷
Tire sizes of the vehicle.
▷
Maximum speed for driving.
On the control display
The current tire inflation pressure values and
the intended tire inflation pressure values for
the mounted tires can be displayed on the con-
trol display.
To ensure that they are displayed correctly, the
tire sizes must be stored in the system and
must have been set for the mounted tires.
The current tire inflation pressure value is lo-
cated on each tire.
The reference tire inflation pressure value is
located in the lower area of the control display.
Checking the tire pressure
General information
The tires heat up while driving. The tire pres-
sure increases with the tire temperature.
Tires have a natural, consistent tire pressure
loss.
The displays of inflation devices may under-
read by up to 0.1 bar/2 psi.
Checking via tire inflation pressure
specifications in tire pressure table
1.
Determine the intended tire inflation pres-
sure levels for the mounted tires.
2.
Check the tire inflation pressure in all four
tires, using a pressure gage, for example.
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