All Wheel Drive (Option) - Volvo 2009 S40 Owner's Manual

06 Starting and driving

All Wheel Drive (option)

All Wheel Drive (AWD) – general
information
Your Volvo can be equipped with permanent
All Wheel Drive (option), which means that
power is distributed automatically between the
front and rear wheels. Under normal driving
conditions, most of the engine's power is
directed to the front wheels. However, if there
is any tendency for the front wheels to spin, an
electronically controlled coupling distributes
power to the wheels that have the best traction.
Tire dimensions
Volvo recommends that you always drive on
tires of the same brand, size, construction
(radial), tread pattern, load, speed, traction,
temperature, and treadwear rating. Never drive
on mixed tires, except for brief periods when
the temporary spare tire is in use.
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Always use properly inflated tires of correct
dimensions. Tire size and inflation pressures
are shown on a placard located on the driver's
side B-pillar (the structural member at the side
of the vehicle, at the rear of the driver's door
opening). See also page 178 for the tire infla-
tion pressure tables beginning, .
152
Temporary Spare
The temporary spare tire is for temporary, low-
speed, short-distance use only. Replace it with
a full-sized tire as soon as possible. Do not
drive on the temporary spare at speeds above
50 mph (80 km/h).
Never install snow chains on a temporary
spare.