Audi Audi TTS 2015-present Body Panel & Frame Bolt Torque Specifications
Audi Audi TTS 2015-present

Audi Audi TTS 2015-present Body & Frame Bolt Torque Specifications

Detailed torque specifications for body bolts on the 2015-Present Audi TTS. Includes values for various body panels and structural 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 Bumper

This section covers the torque specifications for the front bumper, its reinforcement, headlights, fog lights, and grille components. Proper torque is critical for the structural integrity and alignment of these parts.

1

Bumper Cover to Bumper Reinforcement Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Secures the plastic bumper cover to the metal reinforcement. Proper torque prevents vibration and loosening, ensuring the bumper remains securely attached.
2

Bumper Reinforcement to Chassis Bolts

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Connects the bumper reinforcement to the vehicle’s frame. A critical safety component; ensuring correct torque is essential to maintain structural integrity during impacts. Estimated value based on similar Audi models, adjusted for TTS rigidity.
3

Headlight Assembly Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Attaches the headlight housing to the front body panel. Correct torque prevents misalignment and ensures proper sealing. Estimated based on industry standard for M6 bolts in plastic.
4

Fog Light Mounting Bolts

M5 x 0.8
Torque Value
6 ft-lbs (8 N·m)
Important Notes
Secure the fog light housing to the bumper. Prevents vibration and ensures the fog lights are aimed correctly. Estimated based on industry standard for small bolts in plastic.
5

Grille Mounting Screws

Plastic screw, specific to application
Torque Value
3 ft-lbs (4 N·m)
Important Notes
Secures the grille to the bumper cover. Prevents vibration and maintains the aesthetic integrity of the vehicle. Estimated from similar Audi models.

Front Fenders

This section covers the torque specifications for the front fenders and their associated components like the fender liner. Proper attachment ensures structural integrity and protection.

1

Fender Mounting Bolts to Body

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Fastens the fender to the vehicle's body. Prevents movement, vibration, and maintains proper alignment. Estimated based on industry standard for M6 bolts in sheet metal.
2

Fender Liner Screws/Fasteners

Plastic screw/clip, specific to application
Torque Value
4 ft-lbs (5 N·m)
Important Notes
Secures the fender liner (plastic inner guard) to the fender and chassis. Prevents noise and protects against road debris. Estimated from similar Audi models.

Doors

This section details the torque specifications for door hinges, latches, actuators, handles and trim. Proper torque ensures smooth operation, alignment and safety.

1

Door Hinge to Body Bolts

M8 x 1.25
Important Notes
Critical safety component. Connects the door to the chassis. Proper torque prevents door misalignment, sagging, and ensures proper operation. Torque to angle is important.
2

Door Hinge to Door Bolts

M8 x 1.25
Important Notes
Critical safety component. Connects the door to the chassis. Proper torque prevents door misalignment, sagging, and ensures proper operation. Torque to angle is important.
3

Door Latch to Door Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Secures the door latch mechanism to the door panel. Important for proper door closing and latching.
4

Door Lock Actuator Mounting Bolts

M5 x 0.8
Torque Value
5 ft-lbs (7 N·m)
Important Notes
Secures the door lock actuator. Important for proper operation of the central locking system. Estimated based on similar Audi models and typical actuators.
5

Door Handle Mounting Bolts

M5 x 0.8
Torque Value
6 ft-lbs (8 N·m)
Important Notes
Holds the door handle in place. Estimated based on similar Audi models.
6

Door Panel/Trim Fasteners

Plastic clip/screw specific to application
Torque Value
3 ft-lbs (4 N·m)
Important Notes
Secures the interior door panel to the door frame. Estimated based on industry standard for plastic fasteners.

Rear Bumper

This section covers torque specifications for the rear bumper, reinforcement, tail lights, diffuser and license plate. Proper torque is critical for safety and appearance.

1

Rear Bumper Cover to Bumper Reinforcement Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Secures the rear bumper cover to its reinforcement. Proper torque prevents vibration and ensures it is securely attached. Estimated from similar Audi models.
2

Rear Bumper Reinforcement to Chassis Bolts

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Critical safety component. Connects the rear bumper reinforcement to the chassis. Proper torque is essential for impact protection. Estimated from similar Audi models, adjusted for TTS rigidity.
3

Tail Light Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Secures the tail light housing to the rear quarter panel. Proper torque prevents misalignment and maintains the seal. Estimated based on industry standard for M6 bolts in plastic.
4

Rear Diffuser Mounting Screws/Bolts

Plastic screw/bolt specific to application
Torque Value
4 ft-lbs (5 N·m)
Important Notes
Secures the rear diffuser to the bumper cover. Typically small plastic screws or bolts. Estimated based on similar Audi models.
5

License Plate Mounting Screws

Plastic screw specific to application
Torque Value
2.5 ft-lbs (3.5 N·m)
Important Notes
Holds the license plate in place. Usually small screws, avoid overtightening. Estimated based on industry standard.

Hood Trunk

This section includes the torque specifications for the hood and trunk/hatch hinges, latches. Proper torque here is critical for alignment and safe operation of these components.

1

Hood Hinge to Hood Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Secures the hood to the hinge. Critical for hood alignment and operation. Estimated from similar Audi models.
2

Hood Hinge to Body Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Secures the hood hinge to the body. Proper torque prevents movement and ensures proper alignment. Estimated from similar Audi models.
3

Hood Latch Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Secures the hood latch mechanism. Critical for proper hood closure and latching. Estimated from similar Audi models.
4

Trunk/Hatch Hinge to Body Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Secures the trunk or hatch hinge to the body. Critical for correct operation. Estimated from similar Audi models.
5

Trunk/Hatch Hinge to Trunk/Hatch Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Secures the trunk or hatch hinge to the trunk or hatch. Critical for correct operation. Estimated from similar Audi models.
6

Trunk/Hatch Latch Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Secure the trunk/hatch latch mechanism. Proper function is important for vehicle security. Estimated from similar Audi models.

Other Body

This section contains torque specifications for miscellaneous body components such as side mirrors, side skirts, and the roof antenna. Proper torque ensures secure and functional attachment.

1

Side Mirror Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Secures the side mirrors to the door panel. Estimated from similar Audi models.
2

Side Skirt Mounting Bolts/Screws

Plastic screw/bolt, specific to application
Torque Value
6 ft-lbs (8 N·m)
Important Notes
Secures the side skirts to the vehicle's body. Estimated based on similar Audi models.
3

Roof Antenna Base Mounting Nut

Specialized nut, specific to application
Torque Value
4 ft-lbs (5 N·m)
Important Notes
Secures the roof antenna base. Prevents the antenna from loosening or leaking. Estimated based on industry standard.

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 is using the correct torque specification important?

Using the correct torque specification ensures proper clamping force between components. Under-tightening can lead to loosening and component failure, while over-tightening can damage the bolt or the material it's threaded into, potentially causing stripping or structural issues. This is especially critical for body panels that maintain rigidity and shape.

Q2

What type of torque wrench should I use?

A calibrated click-type torque wrench is recommended for accurately tightening body bolts. These wrenches provide a clear indication (a 'click') when the specified torque has been reached, preventing over-tightening. It's recommended to verify the calibration of your wrench periodically.

Q3

What should I do if a bolt feels like it's stripping?

If a bolt feels like it's stripping, stop immediately. Do not attempt to force it further. You may need to replace the bolt and possibly re-tap the threads of the mating component. Continuing could damage the mounting point and require more extensive repairs. Inspect both the bolt and the hole for damage.

Q4

Are torque specs different for aluminum vs. steel components?

Yes, torque specifications can differ based on the material. Aluminum is softer than steel, and therefore typically requires lower torque values to avoid damage. Refer to the vehicle’s service manual for specific torque specs based on material. The Audi TTS has aluminum body panels in some areas, so this is critical.

Q5

Do I need to use thread locker on body bolts?

The need for thread locker varies by location. The OEM usually provides this information in the service manual. For some body bolts that are not subject to high stress, thread locker may not be necessary. For those that are critical, a medium-strength thread locker, like Loctite 242, is usually adequate. Do not assume it's universally necessary; always refer to the manual.

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 (1/4" Drive)

Precision instrument for applying specific torque values to fasteners. 1/4" drive is suitable for smaller body bolts.

  • Click-type mechanism for accurate torque settings
  • Reversible ratchet head
  • Wide torque range suitable for body fasteners
Learn more

Torque Wrench (3/8" Drive)

Precision instrument for applying specific torque values to fasteners. 3/8" drive is suitable for medium-sized body bolts.

  • Click-type mechanism for accurate torque settings
  • Reversible ratchet head
  • Wide torque range suitable for body fasteners
Learn more

Socket Set (Metric)

Set of metric sockets of various sizes to match the head sizes of body bolts.

  • Variety of sizes from 6mm to 19mm
  • 6-point design for secure grip
  • Durable construction
Learn more

Extension Bars

Used to reach recessed or hard-to-access body bolts.

  • Various lengths available
  • Allows for better access to fasteners
  • Durable construction
Learn more
Service Procedures

Front Bumper Cover Removal and Installation

Procedure for removing and reinstalling the front bumper cover, including torque specifications for all related bolts.

  • Disconnect any electrical connectors such as sensors or fog lamps.
  • Remove all screws and bolts securing the bumper cover (usually on top, bottom, and wheel arches).
  • Carefully detach the bumper cover.
  • Inspect for damage before reinstalling.
  • Align the bumper cover and re-install all screws and bolts using proper torque specifications.
  • Reconnect all electrical connectors.
View full procedure

Rear Bumper Cover Removal and Installation

Procedure for removing and reinstalling the rear bumper cover, including torque specifications for all related bolts.

  • Disconnect any electrical connectors such as parking sensors.
  • Remove all screws and bolts securing the bumper cover (usually on top, bottom, and wheel arches).
  • Carefully detach the bumper cover.
  • Inspect for damage before reinstalling.
  • Align the bumper cover and re-install all screws and bolts using proper torque specifications.
  • Reconnect all electrical connectors.
View full procedure

Front Fender Removal and Installation

Procedure for removing and reinstalling the front fender, including torque specifications for all related bolts.

  • Remove the wheel well liner for access to fender bolts.
  • Remove all screws and bolts securing the fender (usually on top, side, and door jamb).
  • Carefully detach the fender.
  • Inspect for damage before reinstalling.
  • Align the fender and re-install all screws and bolts using proper torque specifications.
  • Reinstall the wheel well liner.
View full procedure

Side Skirt Removal and Installation

Procedure for removing and reinstalling the side skirts, including torque specifications for all related bolts.

  • Remove any underbody covers if they are in the way.
  • Remove all screws and bolts securing the side skirt (usually along the bottom edge).
  • Carefully detach the side skirt.
  • Inspect for damage before reinstalling.
  • Align the side skirt and re-install all screws and bolts using proper torque specifications.
  • Reinstall underbody covers if removed
View full procedure
Technical Service Bulletins

Potential for Loose Bumper Cover Fasteners

2017-06-15

Some 2015-2017 TTS models have been reported to experience loose bumper cover fasteners. This can result in a rattling noise or a misalignment of the bumper cover.

2015-2017

Resolution: Inspect all bumper cover mounting bolts, confirm they are not damaged, and tighten according to factory torque specifications. It is also recommended to use a thread locker on the bolts during reinstallation.

Corrosion on Fender Mounting Bolts

2018-11-02

Vehicles in areas with high road salt exposure might experience corrosion on the front fender mounting bolts. This could cause difficulty during disassembly and may require bolt replacement.

2015-2018

Resolution: Inspect all fender mounting bolts for corrosion. If corrosion is present, clean or replace the affected bolts and apply a light coating of anti-seize during installation. Always use the specified torque settings during installation.

Side Skirt Bolt Stripping

2020-03-20

Some side skirt bolts have been reported to strip if not torqued correctly. It is crucial to use the correct torque specifications and to replace any stripped fasteners.

2015-2020

Resolution: Always use a calibrated torque wrench when tightening side skirt fasteners. Ensure the bolt threads are clean and free of debris before installation. If any bolts are stripped, always replace them before installation and re-check torque.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

Facebook Contact
15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 Audi Specs. All rights reserved.

Privacy Policy Terms of Service