40 plus an
additional 180°
(½ turn)
30

-

40
50

-

Coupling rod-to-stabilizer bar bolt 1) 3)

-

40 plus an
additional 90°
(¼ turn)
40 plus an
additional 90°
(¼ turn)
20
70
200 plus an
additional 180°
(½ turn)
20

Constant Velocity (CV) joint boot clamp
Drive axle-to-transmission bolt
Drive axle-to-wheel hub bolt 1)

M10
-

Front lower longitudinal member-tosubframe bolt
Guide link-to-subframe bolt 1) 3)

-

Guide link-to-wheel bearing housing nut 1)
Level control system sensor bolt/nut
Shock absorber fork-to-track control arm
nut 1) 3)

-

Stabilizer bar-to-subframe nut 1) 4)

-

186

-

Audi A6/S6 Quick Reference Specification Book

70 plus an
additional 180°
(½ turn)
140
9
90 plus an
additional 90°
(¼ turn)
25

•

September 2013

Subframe-to-body bolt 1) 2)

Fastener
size
-

Subframe crossbrace-to-subframe bolt 1)

-

Subframe heat shield-to-subframe bolt/nut
Tower brace-to-body bolt
Track control arm-to-ball joint nut 1)
Track control arm-to-subframe nut 1) 3)

M12
M14
-

Upper control arm-to-subframe bolt 1) 3)

-

Upper control arm-to-wheel bearing
housing nut 1)
Wheel hub-to-wheel bearing housing bolt 1)

-

1)
2)
3)
4)
5)

-

Nm
115 plus an
additional 90°
(¼ turn)
90 plus an
additional 180°
(½ turn)
9
20
120
140
70 plus an
additional 180°
(½ turn)
50 plus an
additional 90°
(¼ turn)
40
80 plus an
additional 90°
(¼ turn)

Replace fastener(s).
Remove and tighten diagonally and in steps.
Tighten in the curb weight position.
Remove and install the nuts alternating from side to side.
Loosen and tighten diagonally.

Rear Suspension
Fastener Tightening Specifications
Component
ABS wheel speed sensor-to-wheel bearing
housing bolt
Coupling rod-to-stabilizer bar bolt 1) 2)

Fastener
size
-

Nm

-

40 plus an
additional 90°
(¼ turn)
40 plus an
additional 90°
(¼ turn)
10
20
70

Coupling rod-to-subframe bolt 1) 2)
Cover plate-to-wheel bearing housing bolt
Constant Velocity (CV) joint boot clamp
Drive axle-to-final drive bolt 1)

Audi A6/S6 Quick Reference Specification Book

M10

•

9

September 2013

187

Suspension,
Wheels, Steering

Component

Fastener Tightening Specifications (cont'd)
Component
Drive axle-to-wheel hub bolt 1)

Fastener
size
-

Lower transverse link-to-subframe bolt 1) 2)

-

Lower transverse link-to-wheel bearing
housing bolt 1) 2)

-

Shock absorber-to-mount nut 1)
- Conventional
- Electronic damping
Shock absorber-to-wheel bearing housing
bolt 1) 2)

-

Shock absorber mount-to-body bolt 1)

-

Stabilizer bar-to-subframe bolt 1)

-

Subframe-to-body bolt 1)

-

Tie rod-to-subframe nut 1)
Tie rod-to-wheel bearing housing bolt 1) 2)

-

Upper transverse link-to-subframe bolt 1) 2)

-

Upper transverse link-to-wheel bearing
housing nut 1) 2)
Wheel hub-to-wheel bearing housing bolt
(FWD) 1)

-

Wheel hub-to-wheel bearing housing bolt
(AWD) 1)

-

1)
2)

Nm
200 plus an
additional 180°
(½ turn)
70 plus an
additional 180°
(½ turn)
120 plus an
additional 360°
(1 full turn)
35
50
150 plus an
additional 180°
(½ turn)
50 plus an
additional 90°
(¼ turn)
25 plus an
additional 90°
(¼ turn)
115 plus an
additional 90°
(¼ turn)
95
90 plus an
additional 90°
(¼ turn)
70 plus an
additional 180°
(½ turn)
95

-

200 plus an
additional 180°
(½ turn)
80 plus an
additional 90°
(¼ turn)

Replace fastener(s).
Tighten in the curb weight or control position.

188

Audi A6/S6 Quick Reference Specification Book

•

September 2013

Self-Leveling Suspension
Fastener Tightening Specifications
Air supply unit bracket bolt/nut
Air supply unit bracket threaded sleeve
Air supply unit connecting piece
Air supply unit retainer bolt
Front air spring damper connecting piece
Front vehicle level sensor-to-bracket bolt
Front vehicle level sensor track control arm
nut
Level control system solenoid-to-air supply
unit bolt
Pressure reservoir connecting piece
Rear air spring connecting piece
Rear level control system sensor-to-bracket
bolt
Rear level control system sensor-to-lower
transverse link bolt
Solenoid valve connecting pieces

Fastener
size
-

Nm

-

5

-

5
2.5
5

-

9

10 mm
12 mm
-

2
3
9

Stone chip protection nut

9
7.5
3
9
3
9
9

Suspension,
Wheels, Steering

Component

Wheels, Tires
Fastener Tightening Specifications
Component
Image processing control module bracket nut
Image processing control module-to-bracket bolt
Level control system control module bracket nut
Level control system control module-to-bracket bolt
Night vision system camera-to-retaining plate bolt
Night vision system camera retaining plate bolt
Night vision system camera retaining plate-to-night vision
system camera bolt

Audi A6/S6 Quick Reference Specification Book

•

Nm
2.5
8
2.5
8
6
6
5

September 2013

189

Wheel Alignment Data
Wheel Alignment Specified Values – Sportback
Specified values for all engines

Front suspension

Camber
Maximum
permissible
difference between
both sides
Toe per wheel
(adjustment value)
Toe per wheel
(control value)
Toe differential angle
at 20° 1)
Outer wheel steering
angle at maximum
steering angle
Inner wheel steering
angle at maximum
steering angle
1)

Heavy duty
Standard
Sport
suspension air suspension air suspension air
suspension
suspension
suspension
(1BS)
(1BK)
(2MB)
- 59′± 23′
- 1°5′± 23′
- 1°5′± 23′
30′
30′
30′

+ 10′ ± 5′

+ 10′ ± 5′

+ 10′ ± 5′

+ 10′ ± 7′

+ 10′ ± 7′

+ 10′ ± 7′

1° 49′ ± 30′

1° 49′ ± 30′

1° 49′ ± 30′

33° 24′ + 1°
30’- 2°

33° 24′ + 1°
30’- 2°

33° 24′ + 1°
30’- 2°

39° 36′ + 1°
30’- 2°

39° 36′ + 1°
30’- 2°

39° 36′ + 1°
30’- 2°

The wheel stop on the outer wheel is reduced by this amount. Depending on the
computer manufacturer, the toe-out angle difference can be indicated negatively in
the alignment computer.

Front suspension
Camber
Maximum
permissible
difference between
both sides
Toe per wheel
(adjustment value)
Toe per wheel
(control value)
Toe differential angle
at 20° 1)
Outer wheel steering
angle at maximum
steering angle

190

Standard
suspension
(1BA)
- 53′± 23′
30′

Sport
suspension
(1BE/1BV)
- 1°5′± 23′
30′

Heavy duty
suspension
(1BB)
- 43′± 23′
30′

+ 10′ ± 5′

+ 10′ ± 5′

+ 10′ ± 5′

+ 10′ ± 7′

+ 10′ ± 7′

+ 10′ ± 7′

1° 49′ ± 30′

1° 49′ ± 30′

1° 49′ ± 30′

33° 24′ + 1°
30’- 2°

33° 24′ + 1°
30’- 2°

33° 24′ + 1°
30’- 2°

Audi A6/S6 Quick Reference Specification Book

•

September 2013

Front suspension
Inner wheel steering
angle at maximum
steering angle

Camber
Maximum
permissible
difference between
both sides
Toe for each wheel
Total toe
Maximum
permissible deviation
in direction of travel
relative to vehicle
longitudinal axis

Heavy duty
Standard
Sport
suspension air suspension air suspension air
suspension
suspension
suspension
(1BS)
(1BK)
(2MB)
- 1°20′ ± 25′
- 1°20′ ± 25′
- 1°20′ ± 25′
30′
30′
30′

+ 10 ± 5′
+ 20′ ± 10′
10′

+ 10 ± 5′
+ 20′ ± 10′
10′

+ 10 ± 5′
+ 20′ ± 10′
10′