2013 AUDI TT wheel alignment

206 Tires and wheels
Tire service life
The service life of tires depends on a lot of
different things including proper installation
and balancing, correct tire pressure and driv­
ing style.
Fig. 144 Tire tread: tre ad wea r ind icators (TWI)
l --------- ---
Fig. 145 Rotating t ires for more ev en wea r
Tread Wear Indicator (TWI)
The original tires on your vehicle have
1/16 inch (1.6 mm) high "wear indicators"
c::> fig . 144 running across the tread. Depend­
i ng on the make, there will be six to eight of
them evenly p laced around the tire. Marks on
the tire sidewa ll (for example "TWI" or other
symbols) indicate the positions of the tread
wear ind icators . Worn t ires must be replaced .
Different figures may apply in other countries
c::> & .
Tire pressure
Incorrect tire pressure causes premature wear
and can cause sudden t ire blow-out. For th is
reason, tire pressure must be checked at least
once a month
c::> page 202 .
Driving style
Driving fast around curves, heavy acceleration
and hard braking increase tire wear.
Rotating tires for more even wear
For all four tires on your vehicle to have the
same service life, we recommend that the
front and rear tires are rotated according to
the tire manufacturer's suggested tire rota­
tion intervals. Please remember the follow­
ing :
- Tire rotation intervals may differ from the
vehicle service interva ls outlined in your
Warranty
& Maintenance Booklet.
- The longer one tire is used in one location
on the vehicle, the more it wears at certain
points; therefore, we recommend that you
follow the tire manufacturer's suggested
tire rotation intervals .
- Vehicles with front-wheel drive experience
more tread wear on the front wheels com­
pa red to all-wheel drive (quattro ®).
- Please rotate tires as shown
c::> fig. 145.
-Extra care must be taken when rotating di-
rection-specific tires
c::> page 22 7 .
Wheel balancing
The wheels on new vehicles are balanced.
However, various situations during everyday
driving can cause them to become unbal ­
anced, re sulting in vibrat ions you can usually
feel through the steer ing wheel.
Unbalanced wheels must be rebalanced to
avoid excessive wear on steering, suspension
and tires. A whee l must also be rebalanced
when a new tire is installed.
Incorrect wheel alignment
Incorrect wheel alignment can cause exces ­
sive tire wear, impairing the safety of the veh i­
cle. If tires show excessive wear, have the
whee l alignment checked by an authori zed
Audi dealer or qualif ied workshop.
all-wheel drive
Vehicles with quattro ® mus t always have tires
of the same size, construction and tread type .
For details see
c::> page 155. ..,.

220 What do I do now?
What do I do now?
Vehicle tool kit
The tools ore stored underneath the floor
panel in the luggage comportment.
Fig. 152 Luggage compartment: vehicle tool kit
• Swing the luggage compartment floor up-
wards.
• Remove the veh icle tool kit .
The on board tool kit includes:
- Hook for removing wheel covers*
- Plastic clip to
remove wheel bolt covers*
-Wheel bolt wrench
- Alignment pin for changing wheels
- Screwdr iver w ith reversible blade
- Replacement bit (reversible Torx b it for
changing lamps)
- Open ended wrench 10 x 13
- Towing eye
- Jack *
Some of the on board items listed above are provided on certain models on ly or are opt ion­
al extras.
Before returning the jack* to its place, retract
the jack arm fully.
_& WARNING
Improper use of the vehicle jack can cause
serious personal injuries.
- Never use the screw driver hex head to
tighten wheel bolts, since the bolts can­ not attain the necessary tightening tor­
que if you use the hex head, potentially causing an accident. -
The factory-supplied jack is intended on­
ly for your vehicle model. Under no cir­
cumstances should it be used to
lift
heavy veh icles or other loads; you risk in­
juring yourself .
- Never start the engine when the vehicle
is raised, which could cause an accident.
- Support the vehicle securely with appro­
priate stands if work is to be performed
underneath the vehicle; otherwise, there is a potentia l risk for injury.
- Never use the jack supplied with your
Aud i on another vehicle, part icularly on a
heav ier one . T he jack is only s uitable for
use on the vehicle it came with.
Tire repair
General and safety pointers
Applies to vehicles: wit h Tire Mobility Sys tem
Tire repair is intended only for temporary,
short-term use .
Fig. 153 Tire damage for whic h the Tir e Mob ility Sys­
tem is not suited
Your vehicle is equipped with a tire repa ir kit,
the
Tire Mobility System (TMS).
In the event of a tire failure, the TMS is in the
luggage compartment under the floor.
It con­
s ists of the tire sealant and an electric air
pump .
Using
TMS , tir e damage caused by foreign
bodies up to about
0.16 inch (4 mm) in diam­
eter can be sealed reliably.
The foreign object can stay in the tire .

226 What do I do now ?
-Position the vehicle jack only at the
designated lifting points and align the
jack. Otherwise, the vehicle jack could slip and cause an injury if it does not
have sufficient ho ld on the vehicle.
- A soft or unstab le surface under the
jack may cause the vehicle to slip off the jack. Always prov ide a firm base for
the jack on the ground.
If necessary,
use a sturdy board un der the ja ck .
- On hard, slippery surfac e (such as tiles)
use a rubber mat o r similar to prevent
the j ack fr om s lipp ing.
- T o he lp p revent injury to yoursel f and
yo ur passenge rs:
- Do not raise the vehicle unti l yo u are
sure the jack is sec urely engaged.
- Passenge rs must not rema in in the ve­
h icle when it is jac ked up .
- Make sure that passen gers wait in a
safe p lace away from the vehicle and
well away from the roadway and traffic.
- Make sure jack position is correct, ad­
just as necessary and then contin ue to
ra ise the jack.
0 Note
A floor jack or the pads on the hoist arms
m ust
not be positioned at the points
shown
-arrows-.
Taking the wheel off
Follow these instructions step -by -step for
changing the wheel.
Fi g. 1 62 W heel change : us ing the screwd river ha ndle
(w ith the b lade removed) to turn the bolts
Fig. 163 Whee l cha nge : alig nme nt pin in side the top
hole
After you have loosened all wheel bo lts and
raised the vehicle off the ground, pe rform t he
fo llowing steps to remove and replace the
wheel:
Removing the wheel
.,. Use the
hexagonal s ocket in the screwdri v·
er handle
to completely tur n out the top ­
most whee l bolt and set it aside on a
clean
surface c;, fig. 162.
.,. Screw the threaded end of the alignment
pin from t he too l kit hand-t ight into t he
now vacant bolt hole
c:> fig. 163 .
.,. Then completely unscrew the other wheel
bolts as desc ribed above.
.,. Take off the whee l leav ing the a lignment
p in in the bo lt ho le
c;, (D .
Putting on the wheel
.,. Lift the spa re wheel and carefully s lide it
over the alignmen t pin to g uide it in place
c;, (D .
.,. Use the he xagonal socke t in the screwdr iver
h and le to screw in and tig hten all whee l
bolts
slightly .
.,. Unscrew the alignment pin and insert and
tighten the remaining whee l bolt slightly
like the rest .
.,. Turn the jack handle co unte r-clockwise to
lower the vehicle until the jack is fully re­
leased .
.,. Use the wheel bo lt wrench to tighten all
wheel bo lts firm ly
c;, page 224 . Tighten
t hem
cro sswise, from o ne bol t to the ( ap­
proxima tely) opposi te one, to keep the
wheel cente red.