Audi A3 Sportback g-tron Owner's Manual page 228

226 Wheels and tyres
... If possible, tyres should be replaced at
least
in pairs and not individually (i.e. both fro nt
tyres or both rear tyres together) .
... Never use tyres whose actual size exceeds
t he dimensions of the factory-approved
makes of tyre.
... If you wish to fit t he vehicle with non-stand-
ard ri ms or tyres, it is advisable to consult a
qualified worksho p before purchas ing.
The tyres a nd wheel rims are a n essential part
of t he vehicle's design . The tyres a nd rims ap-
proved by Audi a re specia lly matched to t he
cha racteristics of the vehicle and make a ma-
jor contribution to good road holding and safe
ha ndling
~
& .
The s izes of the rims and tyres approved for
your vehicle are listed in the vehicle's docu-
ments (e.g. EC Certificate of Conformity or
COC document ll). The vehicle documents
vary depending on t he country in which the
vehicle is registered .
Understandi ng t he tyre designations makes it
easie r t o choose t he correct tyres. The follow-
ing designations are marked on the tyre side-
wall, for example:
20S I SS R 16 91 W
This contains the fo llowing information:
20S Tyre width in mm
SS Height/width ratio in %
R
Letter R for radia l
16 Rim diameter in inches
91
Load rating code
w
Speed rating code letter
The manufacturing date is also indicated on
the tyre sidewa ll (possibly only o n the inner
side
of
t he wheel):
DOT .. . 4113 .. .
means, for example, that the tyre was pro-
d uced in the 41st week of 2013.
l )
COC =certificate of confo rmity
Please note that with some types of tyre, the
actual tyre size can differ from the nominal
size marked on the tyre (for instance 205/SS
R 16 91 W), and there may be significant
differences in the contours of the tyres, even
though the tyres are marked with the same
nominal size designation. When replacing
the tyres, it is therefore important to make
sure that the actual size of the new tyres
does not exceed the dimensions of th, e facto-
ry-approved makes of tyre.
Failure to observe this requirement can af-
fect the clearance needed for the tyres. This
could result in contact between the tyres and
suspension components or bodywork. The
brake lines could also be damaged and the
vehicle's safety could be severely impaired
~
.&..
If you use tyres that are approved by Audi
you can be sure that the actual tyre dimen-
sions will be correct for your vehicle. If you
decide to fit a different type of tyre, you
must obtain the appropriate manufacturer's
certificate from the tyre retailer to confirm
that the tyres are suitable for your velhicle.
Keep this certificate in a safe place.
A qualified workshop will be able to advise
you on which tyres may be fitted to your ve-
hicle.
On vehicles with four-wheel drive, a ll four
tyres must always be fitted with tyres of t he
same type, make and tread pattern, as other-
wise t he driveli ne can be damaged by continu-
o us variations in t he wheel speeds. In the
event of a puncture, you may use the fa ctory-
supplied compact t emporary spare wheel for
a s hort t ime. Refit t he normal road wheel as
soon as possi ble.
It is best to have all servicing of wheels and
tyre s performed by a qualified workshop. They
have the necessary special tools and replace-
ment parts, trained personnel and fad lities
for disposing of the old tyres. ""