Mercedes-Benz A-Class 2021 Operator's Manual page 291

if altering the load on the vehicle
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prior to long journeys
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if the operating conditions change, for
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example when driving off-road
Adjust the tire pressure where neces‐
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sary.
Tire pressure which is too high or too low can:
Shorten the service life of the tires.
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Cause increased tire damage.
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Adversely affect driving characteristics and
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thus driving safety, e.g. due to hydroplaning.
& WARNING Risk of accident due to too
low a tire pressure
Tires with pressure that is too low can over‐
heat and burst as a consequence.
In addition, they also suffer from irregular
wear, which can significantly impair the brak‐
ing properties and the handling characteris‐
tics.
Avoid excessively low tire pressure.
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Tire pressure which is too low can cause:
Tire faults as a result of overheating
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Impaired handling characteristics
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Irregular wear
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Increased fuel consumption
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& WARNING Risk of accident due to too
high a tire pressure
Tires with excessively high pressure can
burst.
In addition, they also suffer from irregular
wear, which can significantly impair the brak‐
ing properties and the handling characteris‐
tics.
Avoid excessively high tire pressures.
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Tire pressure which is too high can cause:
Increased braking distance
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Impaired handling characteristics
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Irregular wear
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Impaired driving comfort
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Susceptibility to damage
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Wheels and tires 289
& WARNING Risk of accident due to repea‐
ted pressure drop in the tires
The wheels, valves or tires could be dam‐
aged.
Too low a tire pressure can lead to the tires
bursting.
Examine the tires for foreign objects.
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Check whether the tire has a puncture
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or the valve has a leak.
If you are unable to rectify the damage,
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contact a qualified specialist workshop.
You can find specifications for the tire pressure
for the vehicle's factory-installed tires on the fol‐
lowing labels:
Tire and Loading Information placard on the
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B‑pillar of your vehicle ( page 295).
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Tire pressure table on the inside of the fuel
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filler flap ( page 290).
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Observe the maximum tire pressure
( page 301).
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