Inflation Pressure - SMART Fortwo coupe Operator's Manual

Underinflated tires can
cause excessive and uneven tire wear
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adversely affect fuel economy
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lead to tire failure from being
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overheated
adversely affect handling
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characteristics
Overinflated tires
G WARNING
Follow recommended tire inflation
pressures.
Do not overinflate tires. Overinflated
tires can adversely affect handling and
ride comfort, wear unevenly, increase
stopping distance, and result in sudden
deflation (blowout) because they are more
likely to become punctured or damaged by
road debris, potholes etc.
Overinflated tires can
adversely affect handling
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characteristics
cause uneven tire wear
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be more prone to damage from road
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hazards
adversely affect ride comfort
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increase stopping distance
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Checking tire inflation pressure
Safety notes
G WARNING
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated
tires wear excessively and/or unevenly,
adversely affect handling and fuel
economy, and are more likely to fail from
being overheated.
Do not overinflate tires. Overinflated
tires can adversely affect handling and
ride comfort, wear unevenly, increase
Tires and wheels
stopping distance, and result in sudden
deflation (blowout) because they are more
likely to become punctured or damaged by
road debris, potholes etc.
Do not overload the tires by exceeding the
specified load limit as indicated on the
Tire and Loading Information placard on
the driver's door B‑pillar. Overloading the
tires can overheat them, possibly causing
a blowout. Overloading the tires can also
result in handling or steering problems, or
brake failure.
Check the tire inflation pressure at least
once a month.
Check and adjust the tire inflation
pressure when the tires are cold
( page 125).
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Checking tire inflation pressure
manually
Follow the steps below to achieve correct
tire inflation pressure:
Remove the cap from the valve on one tire.
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Firmly press a tire gauge onto the valve.
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Read the tire inflation pressure on tire
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gauge and check against the
recommended tire inflation pressure on
the Tire and Loading Information
placard on the driver's door B‑pillar
( page 131). If necessary, add air to
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achieve the recommended tire inflation
pressure.
If you have overfilled the tire, release
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tire inflation pressure by pushing the
metal stem of the valve with e.g. a tip of
a pen. Then recheck the tire inflation
pressure with the tire gauge.
Install the valve cap.
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Repeat this procedure for each tire.
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127
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