Mercedes-Benz G 550 2015 Operator's Manual page 236

G-class series
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Tire pressure
234
the tire pressure. On vehicles equipped with
the electronic tire pressure monitoring sys-
tem, the tire pressure can be checked using
the on-board computer.
The tire temperature and pressure increase
when the vehicle is in motion. This is depend-
ent on the driving speed and the load.
Therefore, you should only correct tire pres-
sures when the tires are cold.
The tires are cold:
if the vehicle has been parked without
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direct sunlight on the tires for at least three
hours and
if the vehicle has been driven for less than
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1 mile (1.6 km).
The tire temperature changes depending on
the outside temperature, the vehicle speed
and the tire load. If the tire temperature
changes by 18 ‡ (10 †), the tire pressure
changes by approximately 10 kPa (0.1 bar/
1.5 psi). Take this into account when check-
ing the pressure of warm tires. Only correct
the tire pressure if it is too low for the current
operating conditions. If you check the tire
pressure when the tires are warm, the result-
ing value will be higher than if the tires were
cold. This is normal. Do not reduce the tire
pressure to the value specified for cold tires.
The tire pressure would otherwise be too low.
Observe the recommended tire pressures for
cold tires:
on the Tire and Loading Information placard
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on the B-pillar on the driver's side
in the tire pressure table on the inside of the
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fuel filler flap
Observe the following for the tire pressure on
the spare wheel:
the tire and loading information table on
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the B-pillar on the driver's side.
the tire pressure sticker on the inside of the
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fuel filler flap.
Underinflated or overinflated tires
Underinflation
G
WARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addition,
they also suffer from excessive and/or irreg-
ular wear, which can severely impair the brak-
ing properties and the driving characteristics.
There is a risk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel.
Underinflated tires may:
overheat, leading to tire defects
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have an adverse effect on handling charac-
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teristics
wear quickly and unevenly
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have an adverse effect on fuel consumption
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Overinflation
G
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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have an adverse effect on handling charac-
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teristics
wear quickly and 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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