Audi Audi TTS 2008-2014 Suspension Bolt Torque Specifications & Fastener Values
Audi Audi TTS 2008-2014

Audi Audi TTS 2008-2014 Suspension Bolt Torque Specifications

Comprehensive guide to suspension bolt torque specifications for the 2008-2014 Audi TTS (Mk2 8J) model. Includes torque values for 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

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Front Suspension

Components related to the front suspension system, including struts, control arms, and sway bar links.

1

Strut to Knuckle Bolts (Lower Attachment)

M14 x 1.5
Important Notes
Critical fasteners. These are stretch bolts and must be replaced when removed. Apply torque in stages to ensure proper seating. Ensure surfaces are clean and free of corrosion.
2

Strut Top Mount to Body Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure all bolts are evenly torqued to prevent binding of the strut mount.
3

Sway Bar Link to Strut Bolt/Nut

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Ensure the sway bar link is properly aligned before tightening to avoid damage.
4

Sway Bar Link to Sway Bar Bolt/Nut

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Make sure the sway bar is in its neutral position when tightening.
5

Lower Control Arm Ball Joint Pinch Bolt (Knuckle)

M12 x 1.5
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Critical fastener. These are stretch bolts and must be replaced when removed. Ensure ball joint is fully seated.
6

Lower Control Arm Front Mounting Bolt (Subframe)

M12 x 1.5
Important Notes
Critical fastener. These are stretch bolts and must be replaced when removed. Torque with the suspension loaded at ride height.
7

Lower Control Arm Rear Mounting Bolt (Subframe)

M12 x 1.5
Important Notes
Critical fastener. These are stretch bolts and must be replaced when removed. Torque with the suspension loaded at ride height.
8

Subframe to Body Bolts

M12 x 1.75
Important Notes
Critical fasteners. These are stretch bolts and must be replaced when removed. Torque in a criss-cross pattern following all stages. Ensure subframe is properly aligned.
9

Steering Rack Mounting Bolts (Subframe)

M12 x 1.75
Important Notes
Critical fasteners. These are stretch bolts and must be replaced when removed. Ensure the steering rack is centered prior to tightening.

Rear Suspension

Components related to the rear suspension system, including struts, control arms, and sway bar links.

1

Strut to Knuckle Bolt (Lower Attachment)

M14 x 1.5
Important Notes
Critical fasteners. These are stretch bolts and must be replaced when removed. Apply torque in stages to ensure proper seating.
2

Strut Top Mount to Body Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure all bolts are evenly torqued to prevent binding of the strut mount.
3

Upper Control Arm Inner Bolt (Body Side)

M12 x 1.5
Important Notes
Critical fastener. These are stretch bolts and must be replaced when removed. Torque with suspension at ride height.
4

Upper Control Arm Outer Bolt (Knuckle Side)

M12 x 1.5
Important Notes
Critical fastener. These are stretch bolts and must be replaced when removed. Torque with suspension at ride height.
5

Lower Control Arm Inner Bolt (Subframe Side)

M12 x 1.5
Important Notes
Critical fastener. These are stretch bolts and must be replaced when removed. Torque with suspension at ride height.
6

Lower Control Arm Outer Bolt (Knuckle Side)

M12 x 1.5
Important Notes
Critical fastener. These are stretch bolts and must be replaced when removed. Torque with suspension at ride height.
7

Rear Sway Bar Link to Strut Bolt/Nut

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Ensure the sway bar link is properly aligned before tightening to avoid damage.
8

Rear Sway Bar Link to Sway Bar Bolt/Nut

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Make sure the sway bar is in its neutral position when tightening.
9

Rear Subframe to Body Bolts

M12 x 1.75
Important Notes
Critical fasteners. These are stretch bolts and must be replaced when removed. Torque in a criss-cross pattern following all stages. Ensure subframe is properly aligned.

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?

Correct torque specifications are crucial for suspension components because they ensure the bolts are tightened enough to hold parts securely, preventing them from loosening during driving which could cause damage or an accident. Over-tightening can stretch or break bolts, damage threads in the chassis or components, or cause stress cracks. Under-tightening may allow movement between parts, leading to accelerated wear, play in the suspension and potentially component failure.

Q2

Can I use generic torque values if I don't have the specific Audi TTS specs?

No, absolutely not. Using generic torque values can be extremely dangerous. The Audi TTS has specific bolt sizes, materials, and load requirements. Different bolts have different yield strengths and may have specific torque to yield requirements. Always consult the Audi workshop manual or reliable sources for the correct torque specifications for your vehicle and ensure the correct grade bolts are used.

Q3

What happens if I re-use bolts from the suspension?

Many suspension bolts are designed for single use, particularly torque-to-yield bolts (TTY). Reusing these bolts can compromise their integrity and lead to failure or loosening of the suspension components as they have been stretched to their plastic deformation limit upon first use. Always consult your workshop manual, and replace bolts with new ones when removing parts, following proper tightening procedures.

Q4

Should I apply any lubricants or thread locker to suspension bolts?

The use of lubricants or thread locker should follow the manufacturer's guidelines. Some bolts require dry threads, while others may specify the use of a particular lubricant. Using incorrect lubricants or thread locker can alter the torque applied and affect the correct clamping force. Always check your workshop manual.

Q5

How often should I inspect my suspension bolts?

It is good practice to visually inspect your suspension components for any signs of damage or wear during regular maintenance checks, especially after hitting a large pothole or curb. A full suspension check is best completed by a qualified professional every 12 months or 12,000 miles, or whenever you notice unusual handling, noises, or uneven tire wear.

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-inch drive)

A high-quality 1/2-inch drive torque wrench is essential for accurately tightening suspension bolts to specified torque values.

  • Wide torque range (e.g., 20-200 ft-lbs)
  • Audible click mechanism for precise torquing
  • Durable construction
Learn more

Torque Wrench (3/8-inch drive)

A 3/8-inch drive torque wrench is useful for lower torque suspension bolts and is often needed in tighter spaces.

  • Lower torque range (e.g., 5-80 ft-lbs)
  • Audible click mechanism
  • Compact size
Learn more

Socket Set (1/2-inch and 3/8-inch drive)

A comprehensive socket set with both 1/2-inch and 3/8-inch drive sizes, including deep sockets, is required to access various suspension fasteners.

  • Metric socket sizes
  • Impact-rated sockets are recommended for stubborn fasteners
  • Variety of depths and sizes
Learn more

Extension Bars (Various lengths)

Extension bars of various lengths are necessary to reach recessed or hard-to-access suspension bolts.

  • 1/2-inch and 3/8-inch drive options
  • Durable steel construction
  • Secure connection
Learn more

Ball Joint Separator

Required for separating ball joints when servicing suspension components.

  • Heavy-duty construction
  • Various styles available (pickle fork, scissor type)
  • Suitable for Audi ball joints
Learn more

Anti-Seize Lubricant

Applying anti-seize lubricant to suspension bolts prevents corrosion and makes future removal easier.

  • Prevents seizing
  • High-temperature resistance
  • Suitable for metal-on-metal applications
Learn more
Service Procedures

Front Strut Assembly Removal and Installation

Procedure for removing and installing the front strut assembly, including torque specifications for the various fasteners.

  • Loosen the wheel bolts and raise the vehicle.
  • Remove the wheel.
  • Disconnect any ABS sensors or brake lines attached to the strut assembly.
  • Loosen the sway bar link bolt from the strut.
  • Remove the pinch bolt securing the strut to the wheel bearing housing.
  • Remove the three bolts from the top of the strut mount.
  • Carefully remove the strut assembly from the vehicle.
  • Install the new or reassembled strut, ensuring it is properly seated.
  • Install the top strut mount bolts and tighten to the specified torque (Typically 37ft-lbs).
  • Install and tighten the pinch bolt (Typically 52 ft-lbs + 90 degrees).
  • Reconnect any detached sensors and lines, and sway bar link bolt. Torque to spec (Typically 44 ft-lbs).
  • Reinstall the wheel and lower the vehicle.
  • Torque the wheel bolts to spec (Typically 89 ft-lbs).
View full procedure

Rear Shock Absorber Replacement

Procedure for replacing the rear shock absorber, including torque specifications for mounting hardware.

  • Loosen the wheel bolts and raise the vehicle.
  • Remove the wheel.
  • Support the lower control arm with a jack.
  • Remove the lower shock absorber bolt.
  • Remove the upper shock absorber bolts, often accessed from the trunk area.
  • Remove the shock absorber from the vehicle.
  • Install the new shock absorber, ensuring it's properly seated.
  • Install the upper shock absorber bolts. Torque to spec (Typically 15 ft-lbs + 90 degrees).
  • Install the lower shock absorber bolt, tighten to the specified torque (Typically 52 ft-lbs + 90 degrees).
  • Remove the support jack and reinstall the wheel.
  • Lower the vehicle and torque the wheel bolts to spec (Typically 89 ft-lbs).
View full procedure

Front Lower Control Arm Removal and Installation

Procedure for removing and installing the front lower control arm, including torque specs for ball joint and chassis bolts.

  • Loosen the wheel bolts and raise the vehicle.
  • Remove the wheel.
  • Disconnect the sway bar link from the control arm.
  • Use a ball joint separator to detach the ball joint from the wheel bearing housing.
  • Remove the two bolts securing the control arm to the subframe.
  • Remove the control arm.
  • Install the new control arm, ensuring alignment.
  • Install the subframe bolts, torque to spec (Typically 74 ft-lbs + 90 degrees).
  • Attach the ball joint to the wheel bearing housing, using a new pinch bolt. Torque to spec (Typically 30 ft-lbs + 90 degrees).
  • Reconnect the sway bar link. Torque to spec (Typically 44 ft-lbs)
  • Install the wheel and lower the vehicle.
  • Torque the wheel bolts to spec (Typically 89 ft-lbs).
View full procedure
Technical Service Bulletins

Suspension Noise Over Bumps

2012-05-15

Some 2008-2014 TTS models may experience a clunking or rattling noise from the suspension when driving over bumps or uneven surfaces. This is often attributed to worn sway bar end links or loose control arm bolts.

2008-2014 Audi TTS

Resolution: Inspect sway bar end links for play and replace if necessary. Re-torque all suspension bolts to the correct specifications. Inspect for damage to bushings and replace as needed.

Front Pinch Bolt Corrosion

2015-02-20

Reports of front strut pinch bolts seizing or corroding, making them difficult to remove. This can lead to damage during servicing of the front suspension. Always apply anti-seize.

2008-2014 Audi TTS

Resolution: Always apply anti-seize to pinch bolts prior to installation. Replace pinch bolts if corrosion is present. When removing a seized bolt, heat may be necessary. Take care not to damage surrounding components.

Rear Shock Absorber Top Mount Failures

2011-10-10

Some 2008-2014 Audi TTS models experience premature failure of the rear shock absorber top mounts, resulting in a knocking sound and reduced ride quality.

2008-2014 Audi TTS

Resolution: When replacing the rear shocks, always inspect the top mounts for wear and replace as necessary. Ensure proper torquing of the upper shock mount bolts during install.

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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