wheel alignment AUDI A3 SEDAN 2017 Owners Manual

Wheels
-Inflation pressure that is too low or high can in­
crease tire wear considerab ly.
-Driving quickly through curves, rap id accelera­
tion and heavy b raking increase tire wear .
-Have an authorized A udi dealer or au thorized
Audi Se rvice Facility check the wheel alignment
if there is unusual wear.
-Have the whee ls rebalanced i f an imbalance is
causing noticeab le vib ration in the steering
whee l. If you do not, the tires and other veh icle
components could wear more quickly.
Treadwear indicator
O rigina l equ ipment t ires conta in treadwe ar indi­
cators in the tread pattern, which are b ars that
are 1/16 in. (1.6 mm) h igh and are spaced evenly
aro und the tire perpendic ular to the runn ing d i­
rection¢ fig. 279. The letters "TWI" or triangles
on the tire sidewall indicate the locat ion of the
treadwear indicators.
The tires have reached the mi nimum tread
dept h
ll when they have worn down to the tread­
wear ind icators. Replace the tires with new ones
¢ .&, .
Tire rotation
Rotating t he tires regular ly is recommended to
ensure the tires wear even ly. To rotate the tires,
install the tires from the rear ax le on the front
axle and v ice versa. This will allow the tires to
have approx imately the same length of service
life.
For unidirectional tires, make sure the tires are
installed according to the running direction indi­
cated on the tire
sidewall¢ page 361 .
Hidden damage
Damage to tires and r ims can often occur i n loca­
tions that are hidden . Unus ua l vibrations in the
veh icle or pulling to one s ide may indicate that
there is tire damage. Reduce your speed immedi­
ately. Check the t ires for damage .
If no damage
is visible from the outside, drive s lowly and care­
fully to the nearest authorized Aud i dealer or au-
l) Obey any applicable reg ulations in you r country.
336
thorized Audi Service Facility to have t he ve hicle
inspected.
A WARNING
Tread that has worn too low or different tread depths on the tires can reduce driving safety.
This can increase the risk of an accident be­
cause it has a negative effect on handling,
d riving through curves, and b raking, and be­
cause it increases the r isk of hydroplaning
when dr iving th rough dee p puddles.
Tire pressure
Fig. 280 Driver's side B-pi llar (e xamp le) :
t ire p ress ure label
;; ~ ~ ~-----------------,:,
• (=~ ~~I: I:. I)@ ::g
»-OOIMING...-ol~..SAflO.....,....,--.d . ... _k Le«-h,...a .. ~etdudw,.uWl>l!tdollil,.._~ 'eou lb.
tw: SIU COI.O TR PRESSURE PNE U lailEHSl0HS "'lSSION OU PNEUS AFRQID
-AVANT -KPA. • PS I
Fig. 281 Tire pressure label
SEE OWNER"S MANUAL FOR ADOrTlONAL INFORMATK>N
VOIR L£ MANUa DU PROPRIETAIRE POUR PLUS DE RENSEIGNEMENTS
The correct tire pr essure for tires
mounted in the fa ctory and for
th e s pare tire * is ind icated on a la ­
bel. The label i s located on th e B-
pillar
¢ f ig . 280, ¢ fig. 2 81 . ..,

Emerg ency assis ta nce
-To help prevent injury to yourself and your
passengers:
-Do not ra ise the vehicle until you are sure
the jack is secure ly engaged.
-Passengers must not remain in the vehicle
when it is jacked up.
-Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traffic.
-Make sure jack posit ion is correct, adjust
as necessary and then cont inue to raise
the jack.
CD Note
Do not lift the vehicle by the sill. Position the
veh icle jack only at the designated lifting
points on the sill. Otherwise, your vehicle will
be damaged.
Taking the wheel off /installing the spare
Follow these instructions step-by-step for chang­
ing the wheel .
Fig . 293 Changing a wheel: using the screwdr iver hand le
(with the blade removed) to turn the bolts
Fig. 29 4 Changing a wheel: alignm ent pin ins ide the top
ho le
360
After you have loosened all wheel bolts and
raised the vehicle off the ground, remove and re­
place the wheel as follows:
Removing the wheel
.. Use the he xago nal socket in th e screwdriver
handle
to comp letely remove the topmost
wheel bo lt and set it aside on a
clean surface
<=> fig. 293.
.. Screw the threaded end of the alig nm ent pi n
from the tool kit hand-tight into the empty bolt
hole
<=> fig. 294.
.. Then remove the other wheel bolts as described
above .
.. Take off the whee l leaving the alignment p in in
the bolt hole
<=> (j) .
Putting on the c omp act spare wheel
.. Lift the spare wheel and carefully slide it over
the alignment p in to gu ide it in place
<=>(j) .
.. Use the hexagonal socket in the screwdr iver
handle 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 bolt s light ly like the
rest .
.. Turn the jack hand le counter-clockwise to lower
the vehicle until the jack is fully released .
.. Use the wheel bolt wrench to tighten all wheel
bolts
firmly <=> page 358. Tighten them cross­
wise,
from one bolt to the (approximately) op ­
posite one, to keep the wheel centered.
CD Note
When removing o r insta lling the wheel, the
rim could h it the brake rotor and damage the
r otor. Wor k carefully and have a second per­
son he lp yo u.
{!) Tips
Neve r use the hexagonal socket in the handle
of th e sc rewdriver to loos en o r tigh ten the
whee l bolts.
-Pull the reve rsible blade from the screwdr iv­
er befo re you use the hexagona l socket in
the handle to turn the whee l bolts.