Saab 9-4X Owner Manual - 2011
Vehicle Care 10-69
The rubber in tires ages over time.
This also applies for the spare tire,
if the vehicle has one, even if it is
never used. Multiple conditions
including temperatures, loading
conditions, and inflation pressure
maintenance affect how fast aging
takes place. Tires will typically
need to be replaced due to wear
before they may need to be
replaced due to age. Consult
the tire manufacturer for more
information on when tires
should be replaced.
Vehicle Storage
Tires age when stored normally
mounted on a parked vehicle. Park
a vehicle that will be stored for at
least a month in a cool, dry, clean
area away from direct sunlight to
slow aging. This area should be
free of grease, gasoline, or other
substances that can deteriorate
rubber.
Parking for an extended period can
cause flat spots on the tires that
may result in vibrations while
driving. When storing a vehicle for
at least a month, remove the tires or
raise the vehicle to reduce the
weight from the tires.
Buying New Tires
The original equipment tires
have been developed and
matched specifica lly for this
vehicle and were designed to
meet Tire Performance Criteria
Specification (TPC Spec)
system rating. When
replacement tires are needed,
Saab strongly recommends
buying tires with the same TPC
Spec rating.
The TPC Spec system
considers over a dozen
critical specifications that
impact the overall performance
of the vehicle, including brake
system performance , ride and
handling, traction control, and
tire pressure monitoring
performance. The TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all‐season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. See Tire Sidewall
Labeling on page 10‑53 for
additional information.
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