1999 AUDI A4 weight

44-7

Suspension codes, checking
requirements


Information on weight codes (code number)

From m.y. 1998 , spring/shock assemblies will
be classified according to weight codes (code
number) so that suspension components can be
matched easily.
The spring/shock assembly installed in the
vehicle is indicated by the weight code on the
vehicle data label.

Specified values for wheel alignment
1BA = Standard suspension
1BC = Special purpose suspension
Special purpose vehicles suspension -1BC- have
the same specified values for wheel alignment as
the standard suspension -1BA-.
Pa
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44-9

Requirements

Test equipment must be properly adjusted
and attached to vehicle (refer to equipment
manufacturer's instructions)
Equal tread depth for both tires on each axle,
with difference between two not more than 2
mm (0.079 in.)
Tires inflated to correct pressure
Sliding plates and turntables not positioned
against any stop when checking wheel
alignment
Vehicle at correct curb weight 1)
Vehicle accurately positioned, suspension
bounced and rocked several times and
allowed to settle
Suspension, steering and steering linkage in
proper condition with no damage or
excessive play
Carry out axial wheel run-out compensation.
Since some wheel run-out is allowable,
Pa
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gnment
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checking alignment without first
compensating for axial wheel run out may
indicate that the toe-in tolerance is already
exceeded. If this is the case it is not possible
to set toe-in without first compensating for
wheel run-out

1) Curb weight is defined as: the weight of the
vehicle ready for the road (fuel tank completely
full, spare wheel, vehicle tool kit and vehicle jack
all in specified positions).
Pa
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44-11
Wheel alignment specifications (front-wheel-drive vehicles)


Specifications valid for all engine versions
Front axle
Standard suspension
(1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-25 25
-40 25
-15 25
-30 25 1)
Maximum allowable difference in camber
between two sides 30
30
30
Toe setting for each wheel (curb weight)
+10 2
+10 2
+10 2
Toe check value for each wheel (curb
weight) +10 5
+10 5
+10 5
Toe constant for each wheel (setting
value) +7 2
+7 2
+7 2
Toe constant for each wheel (check
value) +7 7
+7 7
+7 7
Toe-out on turns at 20
-1 20 30
-1 20 30
-1 20 30
1) Applies only to vehicles with heavy duty suspension (1BT)
Pa
ge 9 of 37 Wheel ali
gnment
11/19/2002 htt
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44-13
Wheel alignment specifications (all-wheel-drive vehicles)


Specifications valid for all engine versions
Front axle
Standard suspension
(1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-25 25
-40 25
-15 25
-30 25
Maximum allowable difference in camber
between two sides 30
30
30
Toe setting for each wheel (curb weight)
+10 2
+10 2
+10 2
Toe check value for each wheel (curb
weight) +10 5
+10 5
+10 5
Toe constant for each wheel (setting
value) +7 2
+7 2
+7 2
Toe constant for each wheel (check
value) +7 7
+7 7
+7 7
Toe-out on turns at 20
-1 20 30
-1 20 30
-1 20 30
1) Applies only to vehicles with heavy duty suspension (1BT)
Pa
ge 11 of 37 Wheel ali
gnment
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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e=re
pair&id=AUDI.B5.SU01.44.2

44-15
Wheel alignment specifications (front-wheel-drive vehicles with aluminium mounting bracket)


Specifications valid for all engine versions
Front axle
Standard suspension
(1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-35 25
-50 25
-20 25
-30 25
Maximum allowable difference in camber
between two sides 30
30
30
Toe setting for each wheel (curb weight)
+10 2
+10 2
+10 2
Toe check value for each wheel (curb
weight) +10 5
+10 5
+10 5
Toe constant for each wheel (setting
value) +9 2
+9 2
+9 2
Toe constant for each wheel (check
value) +9 7
+9 7
+9 7
Toe-out on turns at 20
-1 20 30
-1 20 30
-1 20 30
1) Applies only to vehicles with heavy duty suspension (1BT)
Pa
ge 13 of 37 Wheel ali
gnment
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
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pair&id=AUDI.B5.SU01.44.2

44-16
Wheel alignment specifications (all-wheel-drive vehicles with aluminium mounting bracket)


Specifications valid for all engine versions
Front axle
Standard suspension
(1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-35 25
-50 25
-20 25
-30 25
Maximum allowable difference in camber
between two sides 30
30
30
Toe setting for each wheel (curb weight)
+10 2
+10 2
+10 2
Toe check value for each wheel (curb
weight) +10 5
+10 5
+10 5
Toe constant for each wheel (setting
value) +9 2
+9 2
+9 2
Toe constant for each wheel (check
value) +9 7
+9 7
+9 7
Toe-out on turns at 20
-1 20 30
-1 20 30
-1 20 30
1) Applies only to vehicles with heavy duty suspension (1BT)
Pa
ge 14 of 37 Wheel ali
gnment
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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44-17
Wheel alignment specifications, sport suspension (1BD)

Front axle
Sport suspension
(1BD)
Camber
-50 25 Maximum allowable difference in camber between two sides
30 Toe setting for each wheel (curb weight)
+10 2 Toe check value for each wheel (curb weight)
+10 5 Toe constant for each wheel (setting value)
+7 2 Toe constant for each wheel (check value)
+7 7 Toe-out on turns at 20
-1 30 30

Rear axle
Sport suspension
(1BD)
Camber
-55 15
Maximum allowable difference in camber between two sides
30 Overall toe
+8 5 Maximum allowable difference in direction of travel relative to longitudinal vehicle center line
(thrust angle) 10
Pa
ge 15 of 37 Wheel ali
gnment
11/19/2002 htt
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