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192
Tires and wheels
cargo and lugg age load ca-
pacity is 650 lbs . (1400-750
(5
X
150)
=
650 lbs.)
5.
Det ermine the combined
weight of luggage and cargo
being loaded on the vehicle .
That weight may not safely
exceed the available cargo
and luggage load capacity
calcul ated in Step
4.
6.
If your vehicle will be towing
a tr ailer, load from your trail-
er will be tran sferred to your
vehicle. Consult this manual
to determine how thi s re-
duces the available cargo
and luggage load capacity of
your vehicle.
.,. Check the tire sidewall
( ¢ page 193 , fig. 151)
to de-
termine the designated load
rating for a specific tire.
Tire service life
The service life of tires depends on a lot of
diff erent things including proper installation
and balancing, correct tire pressure and driv·
ing style.
Fig. 150 Tire tread: t read wear indicators (TWI)
Tread Wear Indicator (TWI )
The or ig inal t ires on yo ur vehi cle have
1/ 16 inch ( 1.6 mm) hig h "wea r indic at ors"
¢
fig. 150
r unning acro ss the tread . Depend·
ing on the ma ke, t here will be six to eight of
them even ly placed aro und the tire . Marks on
the tire sidewall (for example "TWI" or other
symbols) ind icate t he pos itions of the tread
wea r indica t o rs. Wor n ti res must be replaced .
Different figures may apply in othe r countr ies
¢ .&_ .
Tire pressure
Incor rect t ire pressure causes premature wea r
and can cause sudde n tire blow-out . For this
reason, tire pressu re must be checked at least
o nce a month
¢ page 189 .
Driving style
Driving fast around cur ves, heavy accele rat ion
and hard braking increase tire wear .
Wheel balancing
The w heels on new vehicl es are balance d.
However, var ious situations dur ing everyday
driv ing can cause them to become unbal·
anced, resulting in vib rat ions you can usually
feel th rough the steer ing whee l.
Unbalanced w heels m ust be rebalance d to
avoid excessive wear on steering, suspension
and t ir es. A whee l must also be reba lanced
whe n a new tire is insta lle d .
Incorrect wheel alignment
Incor rect wheel alig nment can cause exces-
sive tire wear , impa ir ing the saf ety of the vehi -
cle.
If
tires show excessive wear, have the
whee l alignment chec ked by an aut ho rized
Audi deal er or qualified wo r kshop.
All-wheel drive
Only the wheel/ti re sizes specif ied by the
manufacture r may be used on veh icles with
all-wheel d r ive. For details see
c::>
page 147.
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