2025-2026 Mercedes G Class SUV Wheels and tyres -> Tyre pressure User Manual
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Wheels and tyres -> Tyre pressure for Your Mercedes G Class SUV Fifth Generation (2025-2026)

615
Tyre pressure
Notes on tyre pressure
&
WARNING
Risk of an accident due to tyre pressure that is insufficient or too
high
TYRES WITH A PRESSURE THAT IS INSUFFICIENT OR TOO HIGH
POSE THE FOLLOWING DANGERS IN PARTICULAR:
R
The tyres can burst.
R
The tyres can wear excessively and/or unevenly.
R
The driving characteristics as well as the steering‑ and braking
may be greatly impaired.
#
Observe the recommended tyre pressures and check the tyre
pressure of all tyres including the spare wheel:
R
monthly
R
when the load changes
R
before embarking on a longer journey
R
when the operating conditions change, e.g. off-road driving
R
when driving at over 250 km/h
#
Adjust the tyre pressure, if necessary.
HIGH OR LOW TYRE PRESSURE CAN:
R
shorten the service life of the tyres.
R
cause increased tyre damage.
R
adversely affect driving characteristics and thus driving safety, e.g. due
to aquaplaning.
&
WARNING
Risk of accident due to repeated pressure drop in the tyres
The wheels, valves or tyres could be damaged.
Too low a tyre pressure can lead to the tyres bursting.
#
Examine the tyres for foreign objects.
#
Check whether the tyre has a puncture or the valve has a leak.
#
If you are unable to rectify the damage, contact a qualified
specialist workshop.
Information on the recommended tyre pressure for the vehicle's factory-fitted
tyres can be found on the tyre pressure table on the B-pillar of your vehicle
(/page616).
Use a suitable pressure gauge to check the tyre pressure. The outer appear‐
ance of a tyre does not permit any reliable conclusion about the tyre pressure.
G-Class - Owner's Manual
Wheels and tyres Tyre pressure
F465 0034 02
616
You can also check the tyre pressure using the on-board computer
(/page616).
ONLY CORRECT TYRE PRESSURES WHEN THE TYRES ARE COLD. CONDI‐
TIONS FOR COLD TYRES:
R
The vehicle has been parked with the tyres out of direct sunlight for at
least three hours.
R
The vehicle has travelled less than 1.6 km.
A rise in the tyre temperature by 10 °C increases the tyre pressure by approx.
10kPa (0.1bar/1.5psi). Take this into account when checking the tyre pres‐
sure of warm tyres.
NOTES ON DRIVING ON SAND
When driving on sand, you can lower the tyre pressure (/page267).
Tyre pressure table
The tyre pressure table is on the B-pillar on the driver's side.
The tyre pressure table shows the recommended tyre pressure for all tyres
approved for this vehicle. The recommended tyre pressures apply for cold
tyres under various operating conditions, i.e. load and/or speed of the vehicle.
If one or more tyre sizes precede a tyre pressure, the tyre pressure information
following is only valid for those tyre sizes.
The load conditions "partially laden" and "fully laden" are defined in the table
for different numbers of passengers and amounts of luggage. The actual num‐
ber of seats may differ from this.
BE SURE TO ALSO PAY ATTENTION TO THE FOLLOWING RELATED TOPIC:
R
Notes on tyre pressure (/page615)
Tyre pressure monitoring system
FUNCTION OF THE TYRE PRESSURE MONITORING SYSTEM
The system checks the tyre pressure and the temperature of the tyres fitted to
the vehicle by means of a tyre pressure sensor.
The tyre pressure and the tyre temperature are displayed on the driver display.
In the event of significant pressure loss or excessive temperature of the tyres,
you will be warned by display messages (/page769) or the warning light
h on the driver display (/page784).
The tyre pressure monitoring system serves solely as an aid. It is the driver's
responsibility to set the tyre pressure to the recommended cold tyre pressure
suitable for the operating situation.
In most cases, the tyre pressure monitoring system will automatically update
the new reference values after you have changed the tyre pressure. You can,
however, also update the reference values by restarting the tyre pressure
monitoring system manually (/page617).
G-Class - Owner's Manual
Wheels and tyres Tyre pressure
F465 0034 02
617
SYSTEM LIMITS
THE SYSTEM MAY BE IMPAIRED OR INOPERATIVE IN THE FOLLOWING
SITUATIONS IN PARTICULAR:
R
Incorrect reference values were taught in.
R
Sudden pressure loss caused, e.g. by a foreign object penetrating the
tyre.
R
There is a malfunction caused by another radio signal source.
%
After a maximum of ten minutes of driving through water, the
message
Tyre press. monitor currently unavailable appears on the
driver display. The tyre pressure monitoring system is then tem‐
porarily unavailable due to fording. This message disappears
approximately one minute after fording.
CHECKING THE TYRE PRESSURE WITH THE TYRE PRESSURE MONITOR‐
ING SYSTEM
Requirements:
R
The vehicle is switched on.
Driver display:
4
©
5
Service
#
Press a to confirm.
ONE OF THE FOLLOWING MESSAGES APPEARS:
R
Current tyre pressure of each wheel:
R
Tyre pressures will be displayed after a few minutes of driving
: Current val‐
ues are not yet known to the system. The pressure/temperature values of
each tyre are displayed as soon as they are known to the system.
R
Tyre pressure monitor active
: the break-in process of the system is not yet
complete. The tyre pressures are already being monitored.
#
Compare the current tyre pressure with the recommended tyre pressure
for the current operating status (/page616). Additionally, observe the
notes on cold tyres (/page615).
%
The values displayed on the driver display may deviate from
those of the tyre pressure gauge as they relate to sea level. At
high elevations, the tyre pressure values indicated by a pressure
gauge are higher than those shown on the driver display.
RESTARTING THE TYRE PRESSURE MONITORING SYSTEM
Requirements:
R
The recommended tyre pressure is correctly set for the respective oper‐
ating condition in each of the four wheels (/page615).
G-Class - Owner's Manual
Wheels and tyres Tyre pressure
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618
RESTART THE TYRE PRESSURE MONITORING SYSTEM IN THE FOLLOWING
SITUATIONS:
R
The tyre pressure has changed.
R
The wheels or tyres have been changed or newly fitted.
Driver display:
4
©
5
Service
#
Select Tyre pressure and confirm with a.
#
Swipe down on the Touch Control on the steering wheel.
The driver display shows the message
Use current tyre pressures as new
reference values?
#
Select Yes and confirm the restart with a.
The driver display shows the message
Tyre pressure monitor restarted.
Current warning messages are deleted and the h yellow warning lamp
goes out.
After you have driven for a few minutes, the system checks whether the
current tyre pressures are within the specified range. The current tyre
pressures are then accepted as reference values and monitored.
If the tyre pressure values are not within the specified range, the mes‐
sage
Please correct tyre pressure appears.
G-Class - Owner's Manual
Wheels and tyres Tyre pressure
F465 0034 02

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