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Tires and wheels
24 7
Occupant loading and distribution for vehicle normal load fo r various designated seat ing
capacit ies
Designated seating capacity,
Vehicle normal load, number
Occupant distribution in a nor-
number of occupants
of occupants
mally loaded vehicle
4
2
2 in front
5
3
2 in front, 1 in back seat
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 2 0 0
Tire pr essu re lab el: located on driver's side B-
pillar
Tire pressure generally refers to the amo unt
of air in a t ire that it needs it to do its job and
safely car ry the combined load of t he entire
vehicle and its contents . Tire pressure is
measured in kilopascals (kPa), the interna -
tional measu ring unit and in pounds per
square inch (PSI). Tire pressure is based in
part on the vehicle's design and load limit -
the greatest amount of weight that the vehi-
cle can carry safely and the t ire size . The prop-
er tire pressure is frequent ly referred to as the
"recommended cold tire inflation pressure ."
Air in the tires expands when t he ti re heats up
beca use of internal frict ion when it flexes in
use. The tire pressure is higher when the tire
has warmed up than when it is "cold ." It is the
inflat ion pressure in a "cold" ti re that counts.
Therefore, you should never let air out of a
warm tire to match "cold tire inflation pres-
sure" recommendations. The t ires would then
be underinflated and could fail suddenly .
Maintaining proper tire pressure is one of the
most important t hings you can do to help
avoid sudde n tire failure . Underinflated t ires
are a majo r cause of sudden tire failure . Keep-
ing tires at the right pressure is also impor-
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KPA.
a
PSI
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KPA.
a
PSI
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KP A.
a
PSI
Fig. 201
Tire pres s ure label
tant for safe and respons ive vehicle hand ling,
tra ction, braking and load carrying.
Tire pres-
sures are parti cul arly important when the
vehicle is being driven at higher speeds, and
then especially when heavily loaded even
withi n the permissible load-carrying capaci-
t ies app roved for your vehicle.
The recommended t ire pressures for your Audi
depend on th e kind of tires on your vehicle
and the number of passengers and/or amount
of luggage you will be transporting.
The tire pressure label is located on the driv-
er 's side B-pillar. The tire pressure labe l lists
the recommended cold tire inflat ion pressures
for the vehicle at its maximum capacity
weight and tires that were on your veh icle at
the time it was manufactured .
If you wish to imp rove comfort when operat-
ing the vehicle at normal load (up to 2/ 3*
occupants) , you can adjust ti re pressures to
those specified for normal vehicle load . Be-
fore operating the vehicle at maximum load,
you must increase th e tire pressures to tho se
specified for maximum vehicle load
¢
,&..
IJi,,-
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