Audi TTS Coupe 2015 Owner's Manual page 252

Wheels
Wheel bolts and rims
Wheel bolts
The wheel bolts should be clean and turn easily.
A special adapter is required to turn the anti­
theft wheel bolts*
page 262.
q
Rims
Rims with a bolted rim flange* or bolted trim
parts* consist of several components. A special
technique is applied to bolt these components
together. Never attempt to repair or dismantle
them q_&.
.&_
WARNING
If the wheel bolts have not been tightened or
serviced correctly, they can come loose, and
you could lose control of the vehicle - risk of
accident! For the correct tightening torque,
refer to
page 264, After changing a wheel.
q
- Make sure that the wheel bolts and threads
in the wheel hubs are always clean and free
from grease.
- Only use wheel bolts that are designed to
match the rims on your car.
-Always have damaged rims repaired by a
qualified workshop. Never attempt to repair
or dismantle rims yourself - risk of accident!
Winter tyres
In winter road conditions winter tyres will consid­
erably improve the car's handling. Due to their
type of construction (width, rubber compound,
tread pattern), summer tyres give less grip on ice
and snow.
� Winter tyres must be fitted on all four wheels.
� Only use winter tyres of the correct type ap-
proved for your vehicle.
� Please note that the maximum permissible
speed for winter tyres may be lower than for
A..
summer tyres
q
advise you of the maximum speed for your
tyres.
� After fitting the wheels you must always check
the tyre pressures
page 249.
q
250
Your specialist retailer can
Winter tyres lose their effectiveness when the
tread is worn down to a depth of 4 mm. The per­
formance of winter tyres is also severely impaired
by ageing, even if the tread is still much deeper
than 4 mm.
.&_
WARNING
- Never exceed the maximum approved speed
for your tyres. This causes the tyres to over­
heat and can even result in a blow-out - risk
of accident!
- Always adapt your driving style to the pre­
vailing road and traffic conditions. Drive
carefully and reduce your speed on icy or
slippery roads. Even winter tyres lose their
grip on black ice.
®
For the sake of the environment
Summer tyres should be fitted again as soon
as possible; they give better handling on
roads which are free of snow and ice. They are
quieter, do not wear so quickly and reduce
fuel consumption.
@
Note
All-weather tyres can also be used instead of
winter tyres. Please note that winter tyres
&
with the symbol are required by law during
the winter season in some countries.
Snow chains
Snow chains will improve braking ability as well
as traction in winter conditions.
� Snow chains can be used on the front wheels
only. This also applies to vehicles with four­
wheel drive*.
� Check that the snow chains are correctly seated
after driving for a few yards; follow the instruc­
tions given by the manufacturer.
� Keep your speed below 50 km/h. Please ob-
serve the applicable local regulations.
For technical reasons snow chains may only be
used on tyres with certain wheel rim/tyre combi-
nations.
.,..