Audi Audi S6 2006-2011 Suspension Bolt Torque Specifications & Fastener Values
Audi Audi S6 2006-2011

Audi Audi S6 2006-2011 Suspension Bolt Torque Specifications

Comprehensive list of torque specifications for all suspension bolts on the 2006-2011 Audi S6 (C6) model. Includes front and rear suspension components.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

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Torque Calculator

Convert between different torque units

Front Suspension

Torque specifications for the front suspension system of a 2006-2011 Audi S6. Includes control arms, steering knuckle, sway bar, strut, and brake components.

1

Upper Control Arm to Frame Bolts (Inner)

M10 x 1.5
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Secures the upper control arm to the chassis. Values based on similar Audi models from the same era. Inspect bolts for wear before reusing.
2

Upper Control Arm to Steering Knuckle Bolt (Ball Joint Pinch Bolt)

M10 x 1.25
Important Notes
Secures the upper control arm to the steering knuckle. Always use a new bolt. Angle tightening ensures proper clamping.
3

Lower Control Arm to Frame Bolts (Inner)

M12 x 1.5
Torque Value
81 ft-lbs (110 N·m)
Important Notes
Secures the lower control arm to the chassis. Values based on similar Audi models from the same era. Inspect bolts for wear before reusing.
4

Lower Control Arm to Steering Knuckle Bolt (Ball Joint Pinch Bolt)

M12 x 1.5
Important Notes
Secures the lower control arm to the steering knuckle. Always use a new bolt. Angle tightening ensures proper clamping.
5

Sway Bar End Link to Strut Bolt

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Connects the sway bar end link to the strut assembly. Inspect bolt for wear before reuse.
6

Sway Bar End Link to Sway Bar Bolt

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Connects the sway bar end link to the sway bar. Inspect bolt for wear before reuse.
7

Strut Pinch Bolt to Steering Knuckle

M14 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Clamps the strut to the steering knuckle. Inspect bolt for wear before reuse.
8

Strut Top Mount to Body Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Secures the top of the strut assembly to the chassis. Tighten in a star pattern.
9

Brake Caliper Bracket to Steering Knuckle Bolts (Front)

M12 x 1.75
Torque Value
140 ft-lbs (190 N·m)
Important Notes
Secures the brake caliper bracket to the steering knuckle. These are safety critical bolts.
10

Brake Rotor Retaining Screw

M6 x 1
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Holds the brake rotor in place. Do not overtighten. This is an estimated value based on common rotor retaining screws.

Rear Suspension

Torque specifications for the rear suspension system of a 2006-2011 Audi S6. Includes control arms, wheel carrier, toe link, sway bar, shock absorber, and brake components.

1

Upper Control Arm to Frame Bolts (Inner)

M10 x 1.5
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Secures the upper control arm to the chassis. Values based on similar Audi models from the same era. Inspect bolts for wear before reusing.
2

Upper Control Arm to Wheel Carrier Bolt

M10 x 1.25
Important Notes
Secures the upper control arm to the wheel carrier. Always use a new bolt. Angle tightening ensures proper clamping.
3

Lower Control Arm to Frame Bolts (Inner)

M12 x 1.5
Torque Value
81 ft-lbs (110 N·m)
Important Notes
Secures the lower control arm to the chassis. Values based on similar Audi models from the same era. Inspect bolts for wear before reusing.
4

Lower Control Arm to Wheel Carrier Bolt

M12 x 1.5
Important Notes
Secures the lower control arm to the wheel carrier. Always use a new bolt. Angle tightening ensures proper clamping.
5

Toe Link to Frame Bolts (Inner)

M10 x 1.5
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Secures the toe link to the chassis. Inspect bolt for wear before reuse.
6

Toe Link to Wheel Carrier Bolt

M10 x 1.5
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Connects the toe link to the wheel carrier. Inspect bolt for wear before reuse.
7

Sway Bar End Link to Lower Control Arm/Wheel Carrier Bolt

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Connects the sway bar end link to the lower control arm or wheel carrier. Inspect bolt for wear before reuse.
8

Sway Bar End Link to Sway Bar Bolt

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Connects the sway bar end link to the sway bar. Inspect bolt for wear before reuse.
9

Shock Absorber Lower Mount Bolt

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Secures the lower end of the shock absorber. Inspect bolt for wear before reuse.
10

Shock Absorber Upper Mount to Body Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Secures the top of the shock absorber to the chassis. Tighten in a star pattern.
Page 1 of 2

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Why are torque specifications so important for suspension bolts?

Using the correct torque ensures proper clamping force, preventing bolts from loosening due to vibration or stress. Under-torquing can lead to joint slippage and component failure, while over-torquing can damage threads, stretch bolts, and weaken the joint. For example, if a control arm bolt is under-torqued, it might loosen over time causing instability and possibly a control arm failure.

Q2

Do I need to replace suspension bolts after removing them?

Generally, it's recommended to replace torque-to-yield (TTY) bolts, also called stretch bolts, as they are designed to deform upon tightening and cannot be reused. Many suspension bolts on the Audi S6, especially those for the subframe and control arms, are TTY. Reusing them can lead to improper torque, and bolt failure. You should consult your repair manual to determine which are TTY and require replacement.

Q3

What if I don't have a torque wrench, can I just tighten the bolts by feel?

It is strongly discouraged to tighten suspension bolts by feel. Proper torque is crucial for the safety and performance of the suspension system. Incorrectly torqued suspension bolts can have major impacts on handling, wheel alignment, and overall safety. Without a torque wrench, you risk over or under-tightening the fasteners, possibly resulting in damage or failure. It is best to either purchase or borrow a torque wrench.

Q4

Should I use thread locker on suspension bolts?

Thread locker is not typically required on most Audi S6 suspension bolts. However, some applications may benefit from thread locker (e.g. certain sway bar links or end links). Always refer to the service manual or manufacturer's specifications. If thread locker is specified, use the correct type (e.g. Loctite 243 for medium strength), and clean the bolt and thread before application to ensure proper engagement. Incorrect use can lead to incorrect torque readings or difficult removal.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench (1/2" Drive)

A calibrated torque wrench is essential for tightening bolts to the precise manufacturer specifications.

  • Wide torque range to cover all suspension fasteners
  • Audible click to indicate torque is reached
Learn more

Torque Wrench (3/8" Drive)

A smaller torque wrench for accessing tighter spaces and smaller fasteners.

  • Lower torque range for smaller bolts
  • More compact design
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets, including various sizes needed for suspension components.

  • Includes deep and shallow sockets
  • Durable construction
Learn more

Wrench Set (Metric)

A set of metric wrenches to hold fasteners while torqueing.

  • Various sizes needed for suspension components
  • Open ended and closed end wrenches.
Learn more

Extension Bars

Extension bars to reach deeply seated bolts.

  • Various lengths
  • Durable material
Learn more

Jointed Socket Adapters

Jointed socket adapters for accessing hard-to-reach bolts at different angles.

  • Various lengths and angles
  • Durable material
Learn more
Service Procedures

Front Upper Control Arm Bolt Torque Procedure

Procedure for tightening the bolts on the front upper control arms of a 2006-2011 Audi S6.

  • Locate the upper control arm bolts at the knuckle and chassis mounting points.
  • Using the correct metric socket, initially tighten all bolts to a snug fit.
  • Using the 1/2" drive torque wrench set to 60 Nm (44 ft-lb) torque the knuckle bolt to specification.
  • Using the 1/2" drive torque wrench set to 40 Nm (30 ft-lb) torque the chassis mounting bolts to specification.
  • Double check all torque specifications for accuracy.
View full procedure

Front Lower Control Arm Bolt Torque Procedure

Procedure for tightening the bolts on the front lower control arms of a 2006-2011 Audi S6.

  • Locate the lower control arm bolts at the knuckle and chassis mounting points.
  • Using the correct metric socket, initially tighten all bolts to a snug fit.
  • Using the 1/2" drive torque wrench set to 80 Nm (59 ft-lb) torque the knuckle bolt to specification.
  • Using the 1/2" drive torque wrench set to 70 Nm (52 ft-lb) torque the chassis mounting bolts to specification.
  • Double check all torque specifications for accuracy.
View full procedure

Rear Upper Control Arm Bolt Torque Procedure

Procedure for tightening the bolts on the rear upper control arms of a 2006-2011 Audi S6.

  • Locate the upper control arm bolts at the knuckle and chassis mounting points.
  • Using the correct metric socket, initially tighten all bolts to a snug fit.
  • Using the 1/2" drive torque wrench set to 40 Nm (30 ft-lb) torque the knuckle bolt to specification.
  • Using the 1/2" drive torque wrench set to 70 Nm (52 ft-lb) torque the chassis mounting bolts to specification.
  • Double check all torque specifications for accuracy.
View full procedure

Rear Lower Control Arm Bolt Torque Procedure

Procedure for tightening the bolts on the rear lower control arms of a 2006-2011 Audi S6.

  • Locate the lower control arm bolts at the knuckle and chassis mounting points.
  • Using the correct metric socket, initially tighten all bolts to a snug fit.
  • Using the 1/2" drive torque wrench set to 80 Nm (59 ft-lb) torque the knuckle bolt to specification.
  • Using the 1/2" drive torque wrench set to 70 Nm (52 ft-lb) torque the chassis mounting bolts to specification.
  • Double check all torque specifications for accuracy.
View full procedure

Sway Bar Link Bolt Torque Procedure

Procedure for tightening the bolts on the sway bar links of a 2006-2011 Audi S6.

  • Locate the sway bar link bolts at the sway bar and control arm mounting points.
  • Using the correct metric socket, initially tighten all bolts to a snug fit.
  • Using the 3/8" drive torque wrench set to 45 Nm (33 ft-lb) torque all sway bar link bolts to specification.
  • Double check all torque specifications for accuracy.
View full procedure

Strut Mount Bolt Torque Procedure

Procedure for tightening the bolts on the strut mount of a 2006-2011 Audi S6.

  • Locate the strut mount bolts at the chassis and strut mounting points.
  • Using the correct metric socket, initially tighten all bolts to a snug fit.
  • Using the 3/8" drive torque wrench set to 30 Nm (22 ft-lb) torque all strut mount bolts to specification.
  • Double check all torque specifications for accuracy.
View full procedure
Technical Service Bulletins

Suspension Component Bolt Corrosion Advisory

2010-05-15

Advisory regarding corrosion affecting the proper tightening of suspension component bolts. This can lead to incorrect torque readings and possible component failure.

2006-2011

Resolution: Thoroughly clean all bolt threads using a wire brush and apply anti-seize to all threads before installation. Ensure the use of a properly calibrated torque wrench.

Revised Torque Specifications for Control Arms

2009-11-20

This bulletin outlines revised torque specifications for certain control arm bolts due to reports of premature wear and loosening. Ensure the correct torque is used.

2006-2009

Resolution: Reference updated service manual for updated torque values. Discard any old documentation. Front lower control arm knuckle bolt: 80 Nm (59 ft-lb), Front lower control arm chassis bolt: 70 Nm (52 ft-lb), Front upper control arm knuckle bolt: 60 Nm (44 ft-lb), Front upper control arm chassis bolt: 40 Nm (30 ft-lb), Rear lower control arm knuckle bolt: 80 Nm (59 ft-lb), Rear lower control arm chassis bolt: 70 Nm (52 ft-lb), Rear upper control arm knuckle bolt: 40 Nm (30 ft-lb), Rear upper control arm chassis bolt: 70 Nm (52 ft-lb).

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

Automotive Technical Specialist

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  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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