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Tires and wheels
18 7
Cold tire inflation pressure
Tire pressure affects the overall handling , performance and safety of a vehicle .
Fig. 14 8
Tire pressur e label: located on driver' s side B·
pillar
Tire pressu re genera lly refers to the amount
of air in a t ire tha t it needs it to do its job and
safely carry the combined load of the entire
vehicle and its contents . Tire pressure is
measured in kilopasca ls (kPa), the interna-
tional measuring unit and in pounds pe r
square inch (PSI). Tire pressure is based in
par t o n the vehicle's desig n an d load limit-
the greatest amount of weight that t he vehi-
cle can carry safe ly and the ti re size . The prop -
er tire pressure is freq uent ly referred to as the
"recommended
cold tire inf lation pressure ."
Air in the tires expands when the tire heats up
because of interna l frict ion when it flexes in
use . The ti re pressu re is higher when the tire
has warmed up than when it is "cold ." It is the
inflat io n pressure in a "cold" tire that counts.
Therefo re, you s ho uld never let air ou t of a
warm tire t o matc h "cold tir e infla ti on pres-
sure" recommendations . The tires wo uld then
be underinf lated a nd could fail suddenly.
Main t aining proper t ire press ure is one of the
most impor t an t thi ng s you ca n do t o he lp
avoid sudden tire failure. Underinfla t ed tires
are a major cause of sudden tire failure . Keep-
ing tires at the right pressure is also impor-
tant for safe and responsive vehicle handling,
traction, braking and load carrying .
Tire pres-
sures are particularly important wh en th e
vehicle is being driven at higher speeds, and
then especially when heavily loaded even
within the permi ssible load -carrying capaci-
ties approved for your vehi cle.
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TIRE AND LOADING INFORMATION
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COI.O TIRE PRESSURE
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PSI
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KPa, -
PSI
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PSI
Fig. 149
Tire pressure label
SEE OWNER'S
MANUA L FOR
ADDITTONAL
INFOl<lMATION
n
u
The recommended tire pressures for your Audi
depe nd on the kind of tires on your ve hicle
and t he number of passe ngers and/or amount
of luggage you will be t ransporting .
The t ire pressure label located on driver's side
B-pillar on your Audi lists the recommended
cold t ire inflation pressu res for the veh icle at
its maximum capac ity weight and ti res that
were on your vehicle at the time it was manu-
factu red.
If you wish to improve comfort when operat-
ing the vehicle at normal load (up to 2 occu -
pants), you can adjust ti re pressu res to those
specified for normal vehicle load. Befo re ope r-
at ing the veh icle at max imum load, you must
increase t he tire pressures t o those spe cified
for maximum vehi cle load
Q
.&.
Bear in mind that the tire pressure mon itor ing
system ca n only moni t or the tire pressures
that are sto red. The sys t em does not recog-
nize the load condi t ion of your veh icle.
See the illustration
9
fig. 148 fo r the locat io n
of t he label o n driver's s ide B-pillar (color of
the act ual label a nd exa ct locat ion on t he ve-
hicle will vary sligh tl y).
Note t hat the follow ing table is acc urate at
the time of going t o press and is s ubject to
change. In t he event of d iscre pan cies, t he t ire
pressure label on driver's side B-pillar always
ta kes precede nce .
..,.
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