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B8 (2007-2015) B7 (2004-2008) B6 (2000-2006) B6 (2000-2006, petrol) B5 (1994-2001) B5 (1994-2001, petrol)

Suspension and steering specifications (Audi A4 B5)

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Table of contents: Wheel alignment angles ↓ Wheel rims ↓ Tightening torques for threaded… ↓ Front suspension ↓ Rear suspension ↓ Steering ↓ Wheels ↓

Wheel alignment angles



Note: Models produced since 1998 were equipped with an aluminum upper control arm mounting bracket instead of a steel one. Note the difference in the installation angles.


Front wheel alignment angles (models with steel upper arm bracket):



Convergence:
  • Standard — +10±2'
  • When turning the steering wheel by 20° — -1°20'±30'

Collapse:
  • Standard*:
    • Standard suspension (code 1BA) - -25'±25'
    • Sports suspension (code 1BE) -40'±25'
    • Heavy Duty Mechanism (Code 1BP) - -25'±25'
    • Heavy Duty Suspension (Code 1BB) - -15'±25'
    • Heavy Duty Suspension (Code 1BT) - -30'±25'
  • The permissible difference between wheels is ±30'

Front wheel alignment angles (models with aluminum upper arm bracket):



Convergence:
  • Standard — +10'±2'
  • When turning the steering wheel by 20° — -1°20'±30'

Collapse:
  • Standard*:
    • Standard suspension (code 1BA) - -35'±25'
    • Sports suspension (code 1BE) -50'±25'
    • Heavy Duty Mechanism (Code 1BP) - -35'±25'
    • Heavy Duty Suspension (Code 1BB) - -20'±25'
    • Heavy Duty Suspension (Code 1BT) - -30'±25'
  • The permissible difference between wheels is ±30'

Rear wheel alignment angles:


  • Convergence*:
    • Standard suspension (code 1BA) — +20'+15'-10'
    • Sports suspension (code 1 BE) - +28'+15'-10'
    • Heavy Duty Mechanism (Code 1BP) - +20'+15'-10'
    • Heavy Duty Suspension (Code 1BB) - +14'+15'-10'
    • Heavy Duty Suspension (Code 1BT) - +17'+15'-10'
    • The maximum permissible deviation from the direction of movement from the longitudinal axis of the vehicle (drift) is ±15'
  • Collapse:
    • Standard — -1°30'±20'
    • The permissible difference between wheels is 30'

* The suspension type identification code is stamped on the VIN plate (vehicle identification number)




Wheel rims



Type - pressed steel or aluminum (depending on the model)

Size:
  • Normal wheels - 6Jx15, 7Jx15, 7Jx16 (depending on the model)
  • Spare wheel ("dummy wheel") - 4Bx15
  • Tire Pressure - See Weekly Checks

Tightening torques for threaded connections Nm



Front suspension



Anti-roll bar:



Vertical traction (early models with hinges):
  • Lower hinge nut*:
    • Stage 1 - 100
    • Stage 2 - turn 90°
  • Upper hinge nut*:
    • Stage 1 - 40
    • Stage 2 - turn 90°

Vertical traction (late models with rubber bushings):
  • Bottom nut*:
    • Stage 1 - 40
    • Stage 2 - turn 90°
  • Top nut*:
    • Stage 1 - 40
    • Stage 2 - turn 90°

Nuts* for fastening clamps - 25

Hub bolt:
  • M14:
    • Stage 1 - 115
    • Stage 2 - turn 180°
  • M16:
    • Stage 1 - 190
    • Stage 2 - turn 180°

Lower suspension arms:
  • Nut* of the front arm joint to the steering knuckle - 100
  • Nut* front arm to subframe:
    • Stage 1 - 80
    • Stage 2 - turn 90°
  • Nut * of the joint of the rear arm to the steering knuckle - 100
  • Nut* rear arm to subframe:
    • Stage 1 - 90
    • Stage 2 - turn 90°

Stretcher:
  • Front Mounting Bracket Bolts* - 75
  • Main support bolts*:
    • Stage 1 - 110
    • Stage 2 - turn 90°
  • Rear support bracket bolts*:
    • Smooth bottom surface of bolt head - 25
    • Knurled lower surface of bolt head - 75

Suspension strut:
  • Lower nut* for fastening to the lever - 90
  • Shock absorber rod nut* - 80
  • Upper support nuts* - 43

Upper suspension arms:
  • Bracket bolts to body - 75

Nut* front upper arm to bracket:
  • Stage 1 - 50
  • Stage 2 - turn 90°

Nut* of the clamp bolt of the steering knuckle to the upper arm - 40

Nut* rear upper arm to bracket:
  • Stage 1 - 50
  • Stage 2 - turn 90°

Rear suspension



Nut* and axle bolt:


  • Stage 1 - 80
  • Stage 2 - turn 90°

Bolts* for fastening beam brackets - 75

Hub nut - adjustable as described in text

Suspension strut:
  • Lower support bolt nut*:
    • Stage 1 - 50
    • Stage 2 - turn 90°
  • Shock absorber rod nut * - 25
  • Upper support bolts - 25

Hub axle bolts - 30

Steering



Power steering pump mounting bolts - 20

Steering column:
  • Mounting bolts - 23
  • Hinge clamp pinch nut - 30

Steering gear:
  • Hydraulic tube connecting bolts:
    • Feed tube - 40
    • Return pipe - 50
  • Tube mounting bracket bolt - 20
  • Centering hole plug - 13
  • Mounting bolts - 65
  • Damper nut to rod - 10
  • Damper bolt to steering gear housing - 35

Steering wheel mounting bolt* - 60

Steering tip:
  • Adjusting lock nut - 40
  • Nut * of the joint to the steering knuckle - 50
  • Toe adjustment bolt - 7
  • Pull to the rack - 100

Wheels



Wheel mounting bolts - 120

* Replaced with new ones during installation.
The article was checked by auto expert Timur Bazhenov
This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

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Previous articles
Audi A4 B5: Car suspension
Next articles

General information about suspension and steering
Front Hub Bearings — Replacement
Front suspension strut — removal and installation
Front suspension strut — disassembly, inspection and assembly


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