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unbalanced, resulting in vib rations you can
usually feel through the steering wheel.
Unba lanced wheels mus t be rebalanced to
avoid excessive wea r on st eer ing, suspens ion
and tires. A wheel must a lso be rebalanced
when a new tire is installed.
Incorrect whe el alignment
Inco rrect whee l alignment can cause exces-
sive t ire wea r, impair ing t he safety of the veh i-
cle. If t ires show excess ive wear, have the
wheel alignment checked by an authorized
Audi dealer or qualified workshop.
All-wheel drive
Vehicles wit h quattro must always have t ires
of the sa me size, construction and tread type.
For detai ls see
¢ page 198 .
A
WARNING
Sudden tire failure can lead to loss of con-
trol, a crash and serious persona l injury!
- Never drive a veh icle when the tread on
any t ire is worn down to the wear indica-
tors.
- Worn tires are a safety hazard , they do
not grip well on wet roads and increase
your risk of"hydrop lan ing" and loss of
control.
- Always keep chemicals that can cause
t ire damage, such as grease, oil, gasoline
and brake fluid away from t ires.
- Tires age even if they are not being used
and can fail suddenly, especially at high
speeds. Tires that are more than 6 years
old can only be used in an emergency
and then with special care and at lower
sp eeds.
- Never mount used tires on yo ur vehicle if
yo u are not sure of their "previous histo-
ry." Old used ti res may have been dam-
aged even t hough the damage cannot be
seen that can lead t o sudden ti re failure
and loss of vehicle control.
Tires and wheels
251
New tires and replacing tires and wheels
New tires and wheels have to be broken in.
Fig. 199
Tire spec ification codes on the sidewall of a
tire
No.
Description
@
Passenger car tire (where applicable)
@
Nomina l width of t ire in millimeters
@
Ratio of height to width (aspect ratio)
©
Rad ial
®
Rim diameter code
®
Load index and speed rati ng
0
U.S. DOT tire identification number
®
Audi Origina l ti re
®
Sever snow conditions
@
Tire ply composition and ma t erials
used
@
Maximum load rating
@
Treadwear, traction and tempe rat ure
grades
@
Maximum permissible inflation pres-
sure
The tires and rims are essential parts of the
vehicle's design . The ti res and rims approved
by Audi a re spec ia lly matched to the charac-
teris t ics of the vehicle and can ma ke a major
.,.
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