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22 8
T i re s and w heel s
- Tires on a vehicle that has been overload-
ed can fail suddenly causing loss of con-
trol and a crash.
- Always make sure that the tota l load be-
ing transported
- including the weight of
a tra iler hitch and the tongue weight of a
loaded trailer - does not make the veh i-
cle heav ier than the veh icle's Gross Vehi-
cle Weight Rating.
A
WARNING
- Incorrect tire pressures and/or underin-
flation can lead to a serious o r fatal acci-
dent .
- Incorrect tire pressures and/or underin-
flation cause increased tire wear and can
affect the handling of the vehicle .
- Incorrect t ire pressures and/or underin-
flation ca n also lead to sudden tire fa il-
ure, including a blowo ut and sudden de -
flation, causing loss of vehicle control.
Checking tire pressure
,
The correct tire pressure for the tires original-
ly installed on your vehicle is listed on the tire
pressure label located on driver' s side 8-pil-
lar.
The recommended t ire press ures are on t he
tire pressure labe l and in the tab le
¢
page 226, Cold tire inflation pressure. This
means that the pressure must be checked and
adju sted when the tire has not been driven for
more than a couple of m iles (kilometers) at
low speeds during the previous three hours .
Air in the tires expands when the tire heats up
as a result of inte rna l fr iction as it flexes in
use. The ti re press ure is higher w hen the tire
has wa rmed up than when it is "cold ."
It is the inflat io n pressure in a "cold " tire that
counts . Therefore, you shou ld never let air out
of a warm t ire to match "Cold tire inflation
press ure" recommendations
¢
page 226.
The
tires would t hen be under infla t ed and cou ld
fa il suddenly .
The tire pressure label on your Audi lists the
recommended cold tire inflation pressures at
maximum capacity for the new, or ig inal
equipment tires that were on your vehicle at
the time it was manufactured.
For the loca-
t ion of the labe l
¢ page 226, fig. 185 .
Most tires lose air natura lly over t ime. They
can a lso lose some air if you drive over a pot-
hole or hit a curb while park ing. It is usually
not possible to see whether the rad ial tires
used today are underinflated just by look ing
at them.
Therefo re, be sure to check t ire press ures at
least once a mo nth and a lways befo re going
on a long trip . Make sure to take the number
of peop le and the amou nt of luggage into ac-
count w hen adjust ing ti re pressu re for a trip -
even one th at you wo uld not consider to be
"long." See
r:!v
page 230, Tires and vehicle
load limits
for mo re important information.
Always use an accurate ti re pressu re ga uge
whe n checking and adju sti ng inflat ion pres -
sures . Check all of the t ires. If t he press ure in
any tire is too high when the tire is "cold", let
air out of t he tire slowly with the edge of the
t ire ga uge and keep checking the pressure un-
t il you reach the pressure that is correct for
the load (passengers and luggage) and kind of
driving you plan to do.
If the pressure in any tire is too low, note the
difference between the pressure in the cold
t ire and the pressure you need and add the air
t hat you need to reach the correct pressure for
the vehicle load (passengers a nd luggage) for
the tires on your vehicle as listed on the on
you r vehicle and in this ma nu al a nd the kind
of d riving you plan to do.
Never exceed the maximum inflation pres-
sure listed on the tir e sidewall for any rea-
son.
Remember that the vehicle manufacture r, not
the tire manufacturer, determines the cor rect
t ire pressu re for the tires on your vehicle.
It is impor t ant t o check t he t ire pressure when
the tires are cold .
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