One
major
advantage
of
air
suspension
is
its
ability
to
keep
the
car’s
ride
height
constant.
This
is
because
it
can
control
the
volume
of
the
air
in
the
bellows.
So,
despite
varying
passenger
or
luggage
loads,
the
vehicle’s
wheel
geometry
(camber,
castor,
toe-in/out)
is
unaffected.
This
benefits
driving
comfort
and
overall
handling.
Ride
height
control
is
also
selectable
on
some
models,
usually
sports
utility
vehicles.
For
off-roading,
selecting
a
raised
ride
height
sends
a
signal
to
the
compressor
to
pump
more
air
into
the
bellows.
Conversely,
releasing
the
air
lowers
the
vehicle,
which
will
enhance
aerodynamic
efficiency
at
high
velocities.
Speed-dependent
controllability
is
usually
part
of
the
modern
air
suspension
system.
Compared
to
steel
coil
springs,
air
suspension
offers
far
superior
ride
comfort.
In
addition,
the
self-levelling
capability
enables
consistent
handling
regardless
of
the
occupancy/cargo
load
on
board.
