Audi TT Roadster 2011 Owner's Manual page 207

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New tires and replacing tires and wheels
New tires and wheels have to be broken in.
Fig. 150
Tire specification codes on the sidewall of a
t ire
No. Description
(D
Passenger car tire (where applicable)
@
Nominal width of tire in millimeters
@
Ratio of height to width (aspect ratio)
@
Radial
@
Rim diameter code
@
Load index and speed rating
(J)
U.S. DOT tire identification number
@
Audi Original tire
@
Sever snow conditions
@
Tire ply composition and materials used
@
Maximum load rating
@
Treadwear, traction and temperature
grades
@
Maximum permissible inflation pres-
sure
The tires and rims are essential parts of the
veh icle's design . The tires and rims approved
by Audi are specially matched to the charac-
teristics of the vehicle and can make a major
contribution to good road holding and safe
Tires and wheels
205
handling when in good condition and properly
inflated
¢
.&. .
We recommend that all work on tires and
wheels be performed by an authorized Audi
dealer. They are familiar with recommended
procedures and have the necessary special
tools and spare parts as well as the proper fa -
cilities for disposing of the old tires.
Authorized Audi dealers have the necessary
information about technical requirements
for
installing or changing tires and rims .
Replacing tires and wheels
Tires should be replaced at least in pairs and
not ind ividually (for example both front tires
or both rear tires together).
Be sure to read and heed the information to
the tire pressure monitoring system
¢ page 212 .
Always buy replacement
radial tires that have
the same spec ificat ions as the tires approved
for your vehicle by Audi. Replacement tires
must always have the same load rating speci-
fication as the original equipment or approved
optional tires listed in the table¢
page
198.
Audi-approved specification tires are spec ially
matched to your vehicle and its load limits,
and can contribute to the important roadhold-
ing, driving characteristics,
and safety of the
vehicle. The table( <=>
page
198) lists specifica-
tions of the tires approved for the Audi mod-
els covered by your Owner's Literature.
The tire pressure label located on driver's side
B-pillar (<=>
page
198,
fig.
147) lists the speci-
fications of the original equipment tires in-
stalled on your vehicle at the time it was man-
ufactured .
Federal law requires tire manufacturers
to
place standardized
information on the side-
wall of all tires<=>
fig. 150 .
This information
identifies and describes the fundamental
characteristics,
the quality grade of the tire
and also provides a tire identification number
for safety standard certification and in case of
a recall.
.,.

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