Audi TT Coupe 2017 Owner's Manual page 266

Wheels
-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¢ fig .
197 . The letters "TWI"
or triangles on the tire sidewall
indicate the location of the tread-
wear ind icators.
The tires have reached the mini-
mum tread depth
l)
when they
have worn down to the tread wear
indicators . Replace the tires with
new ones ¢ A .
Tire rotation
Rotating the tires regularly is rec-
ommended to ensure the tires
wear evenly. To rotate the tires,
install the t ires from the rear axle
on the front axle and vice versa .
This will allow the tires to have
1
>
Obey any applicable regulations in your
country.
264
approximately the same length of
service life.
For unidirectional tires, make
sure the tires are installed accord-
ing to the running direction indi-
cated on the tire sidewall
¢ page
286.
Hidden damage
Damage to tires and rims can of-
ten occur in locations that are
hidden. Unusual vibrations in the
vehicle or pulling to one side may
indicate that there is tire damage.
Reduce your speed immediately.
Check the tires for damage . If no
damage is visible from the out-
side, drive slowly and carefully to
the nearest authorized Audi deal-
er or authorized Audi Service Fa-
cility to have the vehicle inspect-
ed.
8_
WARNING
Tread that has worn too low or
different tread depths on the
tires can reduce driving safety.
This can especially have a nega-
tive effect on handling, on the
risk aquaplaning when driving
through water, when driving ,..