wheel alignment AUDI A3 SEDAN 2018 Owners Manual

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-Do not use run-flat tires on your vehicle. Using them when
not permitted can lead to ve­
hicle damage or accidents.
-If you install wheel covers on
the vehicle, make sure they al­ low enough air circulation to
cool the brake system. If they
do not, this could increase the risk of an accident.
Tire wear/damage
Fig. 276 T ire profile : treadwear indica­
tor
Tire wear
Check the tires regular ly for wear.
-Inflation pressure that is too low or high can increase tire wear
considerably.
-Driving quickly through curves,
rapid acceleration and heavy
braking increase tire wear.
l ) Obey any applicable regulations in your
country.
Wheels
-Have an authorized Audi dealer or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear.
-Have the wheels rebalanced if an imbalance is causing noticeable
vibration in the steering wheel. If you do not, the tires and other
vehicle components could wear more quickly.
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread
pattern, which are bars that are 1/16 in (1.6 mm) high and are
spaced evenly around the tire per­ pendicular to the running direc­
tion
c::> fig. 2 76. The letters "TWI"
or triangles on the tire sidewall indicate the location of the tread­
wear indicators.
The tires have reached the mini ­
mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones
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Tire rotation
Applies to: RS models: tires may
only be rotated if the tires on the
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-Do not raise the v ehicl e until you are sure
the jack is securely engaged .
- Passengers must not rema in in the vehicle
when it is jacked up.
- Make sure that passengers wait in a safe
p lace away from the vehicle and well away
from the road and traff ic.
- Make sure jack position is correct, adjust
as necessary and then cont inue to raise
the jack.
CD Note
Do not li ft the vehicle by the sill. Position the
vehicle jack on ly at the designated lifting
points on the sil l. Otherwise, your vehicle will
be damaged.
Taking the wheel off/installing the spare
Follow th ese instructions st ep-by-step for chang­
ing the wheel .
Fig . 2 90 Ch angin g a w hee l: u sin g th e screwdr ive r ha ndle
(with t he bla de remo ved} t o turn t he bolts
F ig. 291 C h anging a w hee l: ali gnm en t pi n in side the to p
h ol e
1l Appli es to veh icles with ceram ic br ake rot ors•: Use a sec ­
on d alig nme nt pin * (sto re d in t he s pare w hee l we ll mo ld­
ing} for the lo w er hole , fo ll o w ing the de scr ip tion for t he
firs t alig nmen t pin .
Em ergen cy as sis tanc e
After you have loosened all whe el bo lts and
raised the vehicle off the gro und, remove and re­
place the wheel as follows:
Removing the wheel
.,. Use the hexagonal socket in the screwdriver
handle
t o comp letely remove the topmost
wheel bo lt and set i t aside on a
clean su rface
r=> fig. 290.
.,. Screw the threaded end of the alignment pin
from the too l kit hand-tight into the empty bo lt
hole
c> fig . 2911>.
.,. Then remove the other wheel bolts as descr ibed
above .
.,. Take off the whee l leaving the alignment p in in
the bolt hole
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Putting on the comp act spare wheel
.,. Lift the spare wheel and carefully slide it over
the alignment p in to guide it in
place r=>@.
.,. Use the hexagonal socket in the screwdr iver
ha ndle to screw in and t igh ten all wheel bolts
slightly .
.,. Remove the alignmen t pin and insert and t igh t­
en the remaining wheel bo lt s light ly like the
rest .
.,. Tu rn the jack hand le counter-clockwise to lowe r
the vehicle until the jack is fully released .
.,. Use the wheel bolt wrench to tighten a ll wheel
bolts firmly
c> page 365 . Tighten them cross­
wise,
from one bo lt to the (approx imately) op ­
posite one , to keep the wheel centered .
CD Note
When removing or installing the wheel , the
r im could h it the brake rotor and damage the
r otor. Work carefully and have a second per­
son help you.
@ Tips
Never use the hexagonal socket in the handle
of the sc rewdrive r to loosen or t ighten the
whee l bolts.
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