Audi Audi RS5 2010-2016 Drivetrain Bolt Torque Specifications
Comprehensive list of drivetrain bolt torque specifications for the 2010-2016 Audi RS5 (B8) chassis, including transmission, differential, and driveshaft fasteners.
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
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.
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
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.
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.
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Torque Wrench (3/8" Drive)
Torque Wrench (1/2" Drive)
Angle Gauge
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
Transmission And Gearbox
Components related to the transmission and gearbox of the Audi RS5.
1 Transmission Mount Bolts (to chassis)
M12 x 1.75
Transmission Mount Bolts (to chassis)
M12 x 1.75Torque Value
Important Notes
2 Transmission Mount-to-Transmission Bolts
M10 x 1.5
Transmission Mount-to-Transmission Bolts
M10 x 1.5Important Notes
3 Transmission Fill Plug
M20 x 1.5
Transmission Fill Plug
M20 x 1.5Torque Value
Important Notes
4 Transmission Drain Plug
M20 x 1.5
Transmission Drain Plug
M20 x 1.5Torque Value
Important Notes
5 Mechatronics Unit Bolts
M6 x 1.0
Mechatronics Unit Bolts
M6 x 1.0Torque Value
Important Notes
6 Transmission Housing Bolts (Case bolts)
M10 x 1.5
Transmission Housing Bolts (Case bolts)
M10 x 1.5Torque Value
Important Notes
7 Transmission Output Shaft Flange Bolts (to Driveshaft/Prop Shaft)
M10 x 1.5
Transmission Output Shaft Flange Bolts (to Driveshaft/Prop Shaft)
M10 x 1.5Torque Value
Important Notes
Driveshaft Propeller Shaft
Components related to the driveshaft and propeller shaft of the Audi RS5.
1 Center Driveshaft/Prop Shaft Bolts (to Transmission)
M10 x 1.5
Center Driveshaft/Prop Shaft Bolts (to Transmission)
M10 x 1.5Important Notes
2 Center Driveshaft/Prop Shaft Bolts (to Rear Differential)
M10 x 1.5
Center Driveshaft/Prop Shaft Bolts (to Rear Differential)
M10 x 1.5Important Notes
3 Center Support Bearing Bolts
M8 x 1.25
Center Support Bearing Bolts
M8 x 1.25Torque Value
Important Notes
Rear Differential
Components related to the rear differential of the Audi RS5.
1 Differential Mount Bolts (to subframe)
M12 x 1.75
Differential Mount Bolts (to subframe)
M12 x 1.75Torque Value
Important Notes
2 Differential Input Flange Bolts (to driveshaft)
M10 x 1.5
Differential Input Flange Bolts (to driveshaft)
M10 x 1.5Torque Value
Important Notes
3 Differential Output Flange Bolts (to rear axles)
M10 x 1.5
Differential Output Flange Bolts (to rear axles)
M10 x 1.5Torque Value
Important Notes
4 Differential Fill Plug
M20 x 1.5
Differential Fill Plug
M20 x 1.5Torque Value
Important Notes
5 Differential Drain Plug
M20 x 1.5
Differential Drain Plug
M20 x 1.5Torque Value
Important Notes
6 Differential Housing Bolts (Case Bolts)
M10 x 1.5
Differential Housing Bolts (Case Bolts)
M10 x 1.5Torque Value
Important Notes
Axles Halfshafts
Components related to the axles and halfshafts of the Audi RS5.
1 Axle/Halfshaft Inner Bolts (to differential flange)
M10 x 1.5
Axle/Halfshaft Inner Bolts (to differential flange)
M10 x 1.5Torque Value
Important Notes
2 Axle/Halfshaft Outer Bolt (to wheel hub)
M16 x 1.5
Axle/Halfshaft Outer Bolt (to wheel hub)
M16 x 1.5Important Notes
Wheel Hub Bearing
Components related to the wheel hub and bearing of the Audi RS5.
1 Wheel Bearing Housing Bolts (to steering knuckle)
M12 x 1.75
Wheel Bearing Housing Bolts (to steering knuckle)
M12 x 1.75Torque Value
Important Notes
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
Diagnostic Steps
Visual inspection, torque verification, thread assessment
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
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
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
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 precise torque specifications important for drivetrain bolts?
Why are precise torque specifications important for drivetrain bolts?
Precise torque is crucial to ensure proper clamping force, preventing bolt loosening due to vibration or stress, and avoiding damage to threads or components. Over-torquing can stretch bolts beyond their yield strength, causing failure, while under-torquing may lead to joint separation and component damage over time. For example, if the driveshaft bolts aren't tightened correctly, they could loosen and cause a dangerous failure while driving.
Q2 What happens if I don't have a torque wrench?
What happens if I don't have a torque wrench?
While it's strongly recommended to use a torque wrench, if you must proceed without one, be extremely cautious. 'Hand-tight plus a quarter turn' is a common rule of thumb, but it's NOT precise and can be risky. It's essential to get a torque wrench as soon as possible to ensure proper installation and prevent potential damage to drivetrain components or even hazardous driving conditions.
Q3 Should I use new bolts every time I work on the drivetrain?
Should I use new bolts every time I work on the drivetrain?
It's highly recommended to use new, OEM-specified bolts, especially for critical drivetrain components like the driveshaft, differential, and transmission. These bolts often have specific thread-locking compound or are designed for a single use. Reusing old bolts can compromise clamping force and increase the risk of failure. Furthermore, they may have already stretched during their previous torquing cycle.
Q4 How often should I check the torque of my drivetrain bolts?
How often should I check the torque of my drivetrain bolts?
It is recommended to check the torque of your drivetrain bolts after any repair or replacement, then again after about 500-1000 miles of driving. Vibration and settling can cause a slight loss of torque over time. Regular checks, perhaps during routine maintenance or oil changes, are good practice for long-term reliability. For example, after a differential replacement, it's critical to re-check after the first few drives.
Q5 What does 'Nm' stand for, and why is it important?
What does 'Nm' stand for, and why is it important?
'Nm' stands for Newton-meter, which is the standard unit of torque. A Newton-meter is the force of one newton applied at a distance of one meter perpendicular to the force. Using the correct Nm specification is critical for ensuring the correct clamping force; otherwise, you risk damaging components or causing a dangerous failure.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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 achieving precise bolt tightening.
- Wide torque range
- Click-type mechanism
- Accuracy within +/- 3%
Torque Wrench (3/8" Drive)
A smaller torque wrench for fasteners with lower torque specifications.
- Compact design
- Click-type mechanism
- Accuracy within +/- 3%
Socket Set (Metric)
A comprehensive set of metric sockets to fit all bolt heads on the drivetrain.
- Chrome Vanadium steel construction
- Various sizes from 8mm-24mm
- 6-point and 12-point options
Extension Bars (Various lengths)
Extension bars help reach fasteners in hard-to-access areas.
- Durable construction
- Variety of lengths
- Secure connections to sockets
Universal Joint
A universal joint allows the socket to be used at an angle.
- Durable construction
- Smooth rotation
- Standard square drive
Torque Angle Meter
Measures the rotation angle of the bolt.
- Digital or Analog readout
- Clear scale marking
- Easy to use design
Service Procedures
Front Axle Drive Shaft Bolt Tightening
Procedure for tightening the bolts securing the front axle drive shafts to the transmission and wheel hub.
- Locate the front axle drive shaft bolts at the transmission and wheel hub.
- Using the correct socket, tighten the bolts to the specified torque using the torque wrench.
- For some bolts, use the torque angle meter to add the additional degree of rotation.
- Verify all fasteners are torqued correctly.
- Re-check torque values after initial run time.
Rear Differential Mount Bolt Tightening
Procedure for tightening the bolts securing the rear differential to the chassis.
- Locate the rear differential mounting bolts.
- Using the correct socket, tighten the bolts to the specified torque using the torque wrench.
- For some bolts, use the torque angle meter to add the additional degree of rotation.
- Verify all fasteners are torqued correctly.
- Re-check torque values after initial run time.
Driveshaft Center Support Bearing Bolts Tightening
Procedure for tightening the bolts securing the driveshaft center support bearing.
- Locate the driveshaft center support bearing mounting bolts.
- Using the correct socket, tighten the bolts to the specified torque using the torque wrench.
- Verify all fasteners are torqued correctly.
- Re-check torque values after initial run time.
Transmission Mounting Bolt Tightening
Procedure for tightening the bolts securing the transmission to the engine and chassis.
- Locate all transmission mounting bolts.
- Using the correct socket, tighten the bolts to the specified torque using the torque wrench.
- For some bolts, use the torque angle meter to add the additional degree of rotation.
- Verify all fasteners are torqued correctly.
- Re-check torque values after initial run time.
Rear Axle Drive Shaft Bolt Tightening
Procedure for tightening the bolts securing the rear axle drive shafts to the differential and wheel hub.
- Locate the rear axle drive shaft bolts at the differential and wheel hub.
- Using the correct socket, tighten the bolts to the specified torque using the torque wrench.
- For some bolts, use the torque angle meter to add the additional degree of rotation.
- Verify all fasteners are torqued correctly.
- Re-check torque values after initial run time.
Technical Service Bulletins
Driveshaft Vibration Issue
2015-05-15Some 2013-2015 RS5 models have reported excessive vibration at high speeds. This may be caused by improper torque of the driveshaft center support bearing bolts.
Resolution: Inspect the driveshaft for damage and ensure all center support bearing bolts are tightened to the correct specification. Use new bolts if needed.
Rear Differential Mounting Noise
2014-01-20Reports of rear differential noise coming from loose or improperly torqued mounting bolts on 2010-2013 RS5 models.
Resolution: Inspect the rear differential mounting bolts and confirm correct torque values. Replace damaged hardware.
Transmission Mounting Bolt Loosening
2016-02-29A small number of 2015-2016 RS5 models have experienced transmission mounting bolt loosening which has resulted in knocking noises.
Resolution: Check torque of all transmission mounting bolts. Replace hardware as needed, and torque to specified value. Use threadlocker.
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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.