Audi Audi S4 2009-2016 Suspension Specifications
Discover detailed suspension specifications for the 2009-2016 Audi S4 (B8). Includes spring rates, dampers, stabilizer bars, and geometry for maintenance, repair, and upgrades.
Audi S4 Suspension Specifications (2009-2016) Specifications
This document provides detailed specifications and technical information about the suspension system of the 2009-2016 Audi S4. It covers key components, measurements, and maintenance guidelines. Use this guide to understand the suspension setup, identify components, and perform routine maintenance. Navigate through the sections for comprehensive details or refer to the quick reference for key specifications.
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Navigate through the document by exploring the sections and subsections. Each major section focuses on a specific aspect of the suspension system, with detailed subsections providing in-depth information. Use the quick reference section for a concise overview of key specifications.
Key Specifications
Ride Height (unladen)
120 mm (front), 130 mm (rear)
Spring Rate (Front)
120 N/mm
Spring Rate (Rear)
100 N/mm
Damper Type
Gas-filled, twin-tube
Suspension Travel (Front)
120 mm
Available Specifications
Overview of Suspension System
The Audi S4 features a sophisticated suspension system designed to balance performance and comfort. This section provides an overview of the key components and technologies used in the suspension setup.
Overview of Suspension System
The Audi S4 features a sophisticated suspension system designed to balance performance and comfort. This section provides an overview of the key components and technologies used in the suspension setup.
Key Components
- Adaptive Air Suspension (optional)
- Multi-link front and rear suspension
- Dynamic Ride Control (DRC)
- Electronic damping control
- Load-leveling rear suspension
Technical Features
- Variable damping settings
- Automatic ride height adjustment
- Anti-roll bars for reduced body lean
- Hydraulic shock absorbers
- Progressive-rate springs
Front Suspension Specifications
The front suspension of the Audi S4 is designed for precise handling and stability. This section details the technical specifications and components of the front suspension system.
Front Suspension Specifications
The front suspension of the Audi S4 is designed for precise handling and stability. This section details the technical specifications and components of the front suspension system.
Spring and Damper
- Spring rate: 120 N/mm (front)
- Damper type: Gas-filled, twin-tube
- Spring type: Progressive-rate coil springs
- Damper adjustment: Electronic control
- Travel: 120 mm (front)
Anti-Roll Bars
- Front anti-roll bar diameter: 25 mm
- Material: High-strength steel
- Mounting: Bushing-type
- Adjustability: Fixed rate
- Function: Reduces body roll during cornering
Rear Suspension Specifications
The rear suspension is optimized for comfort and traction. This section provides detailed specifications for the rear suspension components.
Rear Suspension Specifications
The rear suspension is optimized for comfort and traction. This section provides detailed specifications for the rear suspension components.
Spring and Damper
- Spring rate: 100 N/mm (rear)
- Damper type: Gas-filled, twin-tube
- Spring type: Progressive-rate coil springs
- Damper adjustment: Electronic control
- Travel: 130 mm (rear)
Anti-Roll Bars
- Rear anti-roll bar diameter: 22 mm
- Material: High-strength steel
- Mounting: Bushing-type
- Adjustability: Fixed rate
- Function: Enhances stability and reduces sway
Suspension Maintenance
Regular maintenance is essential to ensure the longevity and performance of the suspension system. This section outlines key maintenance tasks and intervals.
Suspension Maintenance
Regular maintenance is essential to ensure the longevity and performance of the suspension system. This section outlines key maintenance tasks and intervals.
Service Intervals
- Inspect suspension components every 15,000 miles
- Replace shock absorbers every 50,000 miles or as needed
- Check and top up hydraulic fluid every 30,000 miles
- Inspect anti-roll bar links every 10,000 miles
- Align wheels annually or after any suspension modification
Inspection Points
- Check for signs of wear on bushings
- Inspect springs for damage or sagging
- Look for fluid leaks from dampers
- Check anti-roll bar links for play
- Verify proper ride height
Replacement Guidelines
- Replace springs if sagging or damaged
- Replace dampers if leaking or showing reduced performance
- Replace anti-roll bar links if loose or worn
- Replace bushings if cracked or worn
- Replace any component showing signs of fatigue or damage
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Component Specifications
Overview
- Type
- Sport-tuned independent suspension
- Configuration
- Multi-link front and rear
- Platform
- MLB (Modular Longitudinal Matrix) platform
- Material
- Aluminum links and steel stabilizers
- Location
- Front and rear axle
Dimensions
- Front Spring Rate
- 112 N/mm (637 lbs/in)
- Rear Spring Rate
- 100 N/mm (560 lbs/in)
- Front Damper Diameter
- 50 mm (1.97 in)
- Rear Damper Diameter
- 48 mm (1.89 in)
- Front Stabilizer Bar Diameter
- 30 mm (1.18 in)
- Rear Stabilizer Bar Diameter
- 21 mm (0.83 in)
- Ride Height
- 120 mm (4.72 in) front, 130 mm (5.12 in) rear
- Track Width
- 1,585 mm (62.4 in) front, 1,575 mm (62 in) rear
Materials
- Suspension Links
- Forged aluminum alloy
- Stabilizer Bars
- High-strength steel
- Springs
- High-strength steel with protective coating
- Subframe
- Aluminum alloy
- Bushings
- Hydraulic rubber bushings
- Dampers
- Steel body with internal valving
Features
- Adaptive Damping
-
- Dynamic Ride Control (DRC)
- Adjustable damping modes
- Electronic damper control
- Ride Height Adjustment
-
- Manual height adjustment
- Optional air suspension
- Variable ride height control
- Stabilizer Bars
-
- Front and rear anti-roll bars
- Variable stabilizer control
- Hydraulic stabilizer links
- Camber Control
-
- Camber compensation
- Anti-dive geometry
- Anti-squat geometry
- Suspension Mounts
-
- Reinforced mounting points
- Isolated subframe mounts
- Vibration-dampening bushings
Safety Features
- Stability Control integration
-
- Electronic Stability Program (ESP)
- Anti-roll stabilization
- Load-sensing valve
- Crash Structure
-
- Crash-optimized subframe design
- Energy-absorbing materials
- Reinforced control arms
- Suspension Protection
-
- Wheel impact protection
- Steering gear protection
- Anti-corrosion coating
Comfort Features
- Noise Reduction
-
- Acoustic insulation
- Isolated suspension mounts
- Damped subframe
- Ride Quality
-
- Progressive spring rate
- Adaptive damping control
- Hydraulic bushings
- Adjustability
-
- Manual ride height adjustment
- Optional adaptive suspension
- Driver-selectable modes
- Travel
-
- 140 mm (5.51 in) front suspension travel
- 135 mm (5.31 in) rear suspension travel
- Variable travel depending on load
Accessories
- Suspension Kits
-
- Lowering springs
- Performance dampers
- Adjustable coilovers
- Anti Roll Bars
-
- Upgraded stabilizer bars
- Adjustable sway bars
- High-performance bar links
- Air Suspension
-
- Optional air suspension kit
- Electronic air leveling
- Ride height control module
Maintenance
- Service interval
- Every 12,000 miles or 12 months
- Service Items
-
- Inspect suspension components
- Check damper performance
- Replace stabilizer links if worn
- Lubricate suspension bushings
- Check ride height and adjust if necessary
- Maintenance Notes
-
- Use genuine replacement parts
- Inspect for corrosion or damage
- Check electronic system functionality
Warranty
- Basic Warranty
- Miles: 48,000 milesYears: 4 yearsCoverage: All suspension components
- Powertrain Warranty
- Miles: 70,000 milesYears: 5 yearsCoverage: Suspension components related to powertrain
- Corrosion Warranty
- Miles: 12 yearsYears: Unlimited milesCoverage: Perforation of suspension components
- Maintenance Warranty
- Miles: 3,000 to 30,000 milesYears: 1 to 5 yearsCoverage: Scheduled maintenance services
Production Details
- Manufacturer
- Audi AG, Ingolstadt, Germany
- Manufacturing Process
-
- Forging of suspension links
- CNC machining of critical components
- Robotized welding of subframes
- Surface coating and treatment
- Quality Control
- inspection: Dimensional checks, Material strength tests, Functional testingCertifications: ISO 9001, IATF 16949, VDA 6.1
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient manufacturing
- Reduced emissions production
- Production Metrics
- Annual Production: Over 100,000 unitsProduction Cycle: Approx. 20 hours per unitDefect Rate: Less than 1%Supplier Network: Global network of approved suppliers
Service Information for suspension Service
Maintenance and service requirements specific to this component
- Inspect suspension components for wear or damage
- Check damper performance and response
- Inspect stabilizer links and bushings
- Lubricate suspension joints
- Check ride height and adjust if necessary
Ensure all components are clean and free of debris.
- Replace stabilizer links if worn
- Inspect and replace damper seals if necessary
- Check anti-roll bar connections
- Inspect subframe mounts for wear
- Check suspension alignment
Recommended to use genuine Audi parts for replacements.
- Replace dampers if showing signs of wear
- Inspect and replace suspension bushings
- Check spring health and rate
- Inspect stabilizer bar end links
- Perform full suspension alignment
Major service interval - critical for maintaining performance and safety.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the suspension system for the 2009-2016 Audi S4?
What are the technical specifications of the suspension system for the 2009-2016 Audi S4?
The 2009-2016 Audi S4 features a sport-tuned suspension system designed for performance and handling. It includes front MacPherson strut suspension and rear trapezoidal-link suspension with anti-roll bars. The system is compatible with 18-inch or 19-inch alloy wheels and is optimized for dynamic driving. The front spring rate is approximately 140 N/mm, and the rear is around 120 N/mm, providing a balanced ride and handling characteristic.
Q2 What maintenance is required for the suspension system?
What maintenance is required for the suspension system?
Regular suspension maintenance for the 2009-2016 Audi S4 includes inspecting control arms, bushings, and ball joints every 15,000 miles. Shock absorbers and struts should be replaced every 50,000 to 70,000 miles, depending on driving conditions. Tire alignment should be checked every 6 months or after any suspension component replacement. Lubricate suspension components annually and ensure proper tire pressure is maintained.
Q3 How do I replace a worn-out suspension component?
How do I replace a worn-out suspension component?
To replace a suspension component on the 2009-2016 Audi S4, start by safely lifting the vehicle and removing the wheel. Use specialized tools like a spring compressor for struts or shocks. Remove the mounting bolts and carefully extract the old component. Install the new part, ensuring proper alignment and torque specifications. Reassemble in the reverse order and perform a wheel alignment afterward. Always refer to the service manual for specific instructions.
Q4 What are common issues with the suspension system?
What are common issues with the suspension system?
Common issues with the 2009-2016 Audi S4 suspension include worn-out control arms, loose or damaged bushings, and leaking shock absorbers. Symptoms may include clunking noises, uneven tire wear, or a bouncy ride. Inspect the suspension components regularly and replace any worn or damaged parts promptly. If you notice excessive play or fluid leakage, address the issue immediately to avoid further damage.
Q5 How can I optimize the suspension for better performance?
How can I optimize the suspension for better performance?
To optimize the suspension for better performance on the 2009-2016 Audi S4, consider upgrading to stiffer coilovers or performance sway bars. Adjust the damping settings to your driving style, with firmer settings for track use and softer settings for daily driving. Ensure proper tire alignment with performance-oriented settings, such as increased negative camber for cornering stability. Additionally, maintain proper ride height and consider lightweight suspension components for improved handling.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Audi S4 Suspension Service Manual
Coming SoonComprehensive guide covering suspension system maintenance, repair, and replacement procedures for the 2009-2016 Audi S4.
Technical Bulletin: Suspension Component Updates
Coming SoonOfficial Audi technical bulletin detailing updates and improvements for suspension components in the 2009-2016 S4 models.
Audi S4 Suspension Parts Catalog
Coming SoonDetailed catalog of genuine and aftermarket suspension parts compatible with the 2009-2016 Audi S4.
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Technical Information
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