Audi 100 Quattro, Owner'S Manual

Page: 127 / 180

VEHICLE CARE
125
2
climate.
Tire specification
Tire specifications are imprinted on the
sidewall of the tires. If in doubt, check
with your Audi dealer.
All passenger car tires must conform
to Federal Safety Requirements in
addition to these grades.
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the tire
when tested on a government test
course. For example, a tire graded 150
would wear one and a half (1
1
/ ) times as
welt as a tire graded 100. The relative
performance of tires depends on actual
conditions of use, however, and may
depart significantly from the norm due to
variations in driving habits, service practi-
ces and differences in road characte-
ristics and
Traction A, B, C
The traction grades, from highest to
lowest, are A! B, and C and represent the
tire's ability to stop on wet pavement as
measured on government test surfaces
of asphalt and concrete. A tire marked C
may have poor traction performance.
WARNING
The traction grade is based on bra-
king (straightahead) traction tests and
does not include cornering (turning)
traction.
Temperature A, B, C
The temperature grades A (the highest),
B, and C, represent the tire's resistance
of heat. Sustained high
car tires must meet under the
red
to the generation
temperatures can reduce tire life, and
lead to sudden tire failure. Grade C
corresponds to a performance which all
passenger
Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent
higher levels than the minimum requi
by law.
WARNING
The temperature grades are establi-
shed for tires that are properly inflated
and not overloaded. Excessive speed,
underinflation, or excessive loading,
either separately or in combination,
can cause heat buildup, possible tire
failure, loss of control and personal
injury.
Snow tires
The tires for your vehicle were selected
for optimal performance under normal
driving conditions.
For winter driving, the readability of your
vehicle can be improved by installing all
season tires or radial snow tires (M + S)
with or without studs
1)
. This applies
especially to vehicles which are equipped
with high speed tires (identified by the
heel drive,
must
code letter H or V on the tire flank). Let
your authorized Audi dealer advise and
assist you.
When installing winter tires, please note
the following:
§
Only radial ply winter tires must be
installed. Ask your authorized dealer for
the recommended tire size.
§
Winter tires should be mounted on
all four wheels.
es with all-w On vehicl
however, snow tires
be mounted
on all four wheels. Ask your dealer for
recommended tire size.
1)
Check with your local Motor Vehicle Bureau
for possible restrictions