Audi Audi RS4 2005-2008 Brakes Specifications
Audi Audi RS4 2005-2008

Audi Audi RS4 2005-2008 Brakes Specifications

Discover detailed brake specifications for the 2005-2008 Audi RS4, including rotor sizes, calipers, pads, and fluid requirements. Essential for maintenance, repairs, and upgrades.

Updated

Brakes Specifications Overview Specifications

This document provides a detailed overview of the brake specifications for the 2005-2008 Audi RS4. It includes technical details, components, and maintenance recommendations. Use the sections below to navigate through the specifications, or refer to the quick reference section for key highlights. This guide is designed to help users understand and maintain their vehicle's braking system effectively.

How to Use

To search for specific information, use the search functionality by typing keywords such as 'rotor size' or 'brake fluid type' in the search bar. This will help you quickly locate relevant details within the document.

Navigate through the sections by scrolling or using the table of contents. Each section is divided into subsections for easier access to specific information. Use the quick reference section for a concise overview of key specifications.

Key Specifications

Front Rotor Diameter

14.3 in (364mm)

Rear Rotor Diameter

12.8 in (325mm)

Front Caliper Pistons

8-piston

Rear Caliper Pistons

4-piston

Brake Fluid Type

DOT 4

Available Specifications

Front Brake System

The front brake system of the 2005-2008 Audi RS4 features high-performance components designed for optimal stopping power and durability. This section details the specifications of the front brake components.

Front Brake Calipers
  • 8-piston aluminum calipers
  • Fixed caliper design for consistent braking performance
  • Anodized finish for corrosion resistance
  • Integral brake pad wear sensors
  • Compatible with high-performance brake pads
Front Brake Rotors
  • 14.3-inch (364mm) ventilated rotor diameter
  • 1.26-inch (32mm) rotor thickness
  • Cross-drilled and slotted design for heat dissipation
  • Two-piece rotor construction for reduced weight
  • High-carbon cast iron for durability
Front Brake Pads
  • High-performance metallic brake pads
  • Low dust, high friction coefficient
  • Compatible with high-temperature braking
  • OE (Original Equipment) specification
  • Includes wear sensors for pad replacement alerts

Rear Brake System

The rear brake system of the 2005-2008 Audi RS4 is designed to complement the front brakes, ensuring balanced and efficient braking performance. This section provides detailed specifications for the rear brake components.

Rear Brake Calipers
  • 4-piston aluminum calipers
  • Fixed caliper design for consistent braking performance
  • Anodized finish for corrosion resistance
  • Integral brake pad wear sensors
  • Compatible with high-performance brake pads
Rear Brake Rotors
  • 12.8-inch (325mm) ventilated rotor diameter
  • 0.98-inch (25mm) rotor thickness
  • Cross-drilled and slotted design for heat dissipation
  • Two-piece rotor construction for reduced weight
  • High-carbon cast iron for durability
Rear Brake Pads
  • High-performance metallic brake pads
  • Low dust, high friction coefficient
  • Compatible with high-temperature braking
  • OE (Original Equipment) specification
  • Includes wear sensors for pad replacement alerts

Brake Fluid and Maintenance

Proper maintenance of the braking system is essential for optimal performance and safety. This section provides specifications and recommendations for brake fluid and routine maintenance.

Brake Fluid Specifications
  • Recommended brake fluid type: DOT 4
  • Minimum boiling point: 230°C (446°F)
  • Maximum water content: 2%
  • Change interval: Every 30,000 miles or 2 years
  • Compatible with synthetic brake fluids
Maintenance Intervals
  • Brake fluid change: Every 30,000 miles or 2 years
  • Brake pad inspection: Every 10,000 miles
  • Rotor inspection: Every 15,000 miles
  • Brake hose inspection: Every 30,000 miles
  • Caliper service: Every 60,000 miles or as needed

Brakes Specifications

Overview

Type
fixed-caliper disc brakes
Configuration
front: 4-piston calipers, rear: 2-piston calipers
Platform
Audi B7 platform
Material
steel and aluminum
Location
all-wheel disc brakes

Dimensions

Front Rotor Diameter
14.4 in (366 mm)
Front Rotor Thickness
1.26 in (32 mm)
Rear Rotor Diameter
12.8 in (325 mm)
Rear Rotor Thickness
0.87 in (22 mm)
Front Caliper Piston Count
4
Rear Caliper Piston Count
2
Brake Line Diameter
0.25 in (6 mm)

Materials

Rotors
cast iron with cross-drilled and ventilated design
Calipers
aluminum alloy with black anodized finish
Brake Pads
high-performance ceramic composite
Brake Lines
stainless steel reinforced flexible hoses

Features

High-Performance Braking
  • large diameter two-piece rotors
  • fixed-caliper design for consistent pedal feel
  • ventilated and cross-drilled rotors for heat dissipation
  • high-friction brake pads for improved stopping power
  • stainless steel brake lines for durability
Thermal Management
  • internal cooling ducts for rotor cooling
  • ventilated rotor design for heat dissipation
  • aerodynamic cooling shrouds
Stability Systems
  • electronic stability control (ESC)
  • anti-lock braking system (ABS)
  • electronic brake force distribution (EBD)
  • emergency brake assist (EBA)
Pedal Feel
  • servotronic brake assist for improved pedal feel
  • progressive brake pedal ratio for linear braking response
  • low-pedal effort with high stopping power

Safety Features

Anti-Lock Braking
  • four-channel ABS with electronic brake force distribution
  • electronic differential lock (EDL) for traction control
  • automatic brake disk drying in wet conditions
Emergency Braking
  • emergency brake assist (EBA) for panic stops
  • automatic hazard light activation during hard braking
  • post-crash braking to prevent secondary collisions
Stability Control
  • integrated stability control with brake interventions
  • Trailer stability assist
  • roll-over mitigation

Comfort Features

Noise Reduction
  • acoustic damping brake pads
  • rotor coating to reduce squeal
  • insulated brake components
Pedal Comfort
  • progressive pedal feel for smooth deceleration
  • servotronic assistance for reduced effort
  • adjustable brake pedal position
Fade Resistance
  • high-performance brake pads with fade resistance
  • ventilated rotors for thermal stability
  • optimized cooling systems

Accessories

Performance Upgrades
  • high-performance brake pads
  • upgraded rotor kits
  • stainless steel brake lines
  • lightweight brake components
Visual Customization
  • colored caliper finishes
  • logo-branded calipers
  • custom rotor designs
Convenience Accessories
  • brake fluid level sensor
  • brake wear indicator
  • portable brake bleeding kit

Maintenance

Service interval
  • 15,000 miles (24,000 km)
  • 30,000 miles (48,000 km)
  • 60,000 miles (96,000 km)
Maintenance Items
  • brake pad replacement
  • rotor inspection and resurfacing
  • brake fluid change
  • caliper lubrication
  • brake line inspection
Maintenance Notes
  • Replace brake pads when worn below 3 mm
  • Resurface rotors if thickness variation exceeds 0.001 in
  • Use only DOT 4 brake fluid
  • Inspect brake lines for damage or leaks
Repair Time
Front Brake Job: 2.5 hours
Rear Brake Job: 2 hours
Full Brake Overhaul: 6-8 hours

Warranty

Basic Warranty
Miles: 48,000 miles
Years: 4 years
Coverage: parts and labor
Powertrain Warranty
Miles: 70,000 miles
Years: 5 years
Coverage: brake components included
Corrosion Perforation Warranty
Miles: 120,000 miles
Years: 12 years
Coverage: brake lines and rotors
Roadside Assistance Warranty
Miles: unlimited miles
Years: 4 years
Coverage: emergency brake service included

Production Details

Manufacturer info
Caliper Manufacturer: Brembo
Rotor Manufacturer: Audi AG
Pad Manufacturer: Pagid
Line Manufacturer: Continental
Manufacturing Process
  • Casting and machining of brake components
  • Assembly and testing of calipers
  • Surface coating and treatment of rotors
  • Quality control inspection
Quality Control
Dimensional Accuracy: CNC machining tolerances
Performance Testing: dyno testing for braking performance
Material Certification: ISO 9001 certified materials
Sustainability Practices
  • Recycling of brake materials
  • Use of eco-friendly coatings
  • Energy-efficient manufacturing processes
Production Metrics
Annual Production: 10,000 units
Production Cycle: 12 months
Quality Rating: 99.9% defect-free rate

Service Information for brakes Service

Maintenance and service requirements specific to this component

15,000 miles
12 months
  • Inspect brake pads and rotors
  • Check brake fluid level and condition
  • Inspect brake lines and hoses
  • Test ABS and ESP systems
  • Clean and lubricate brake components

Typical maintenance interval under normal driving conditions

30,000 miles
24 months
  • Replace brake pads if worn below 3 mm
  • Resurface rotors if necessary
  • Bleed brake system and replace fluid
  • Inspect and tighten brake hardware
  • Check brake sensors and wiring

More extensive service required, special tools may be needed

60,000 miles
48 months
  • Replace rear brake pads
  • Inspect and replace front brake rotors
  • Replace brake fluid reservoir
  • Inspect and replace brake lines if damaged
  • Perform full brake system test

Major service interval, critical for maintaining safety and performance

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the brakes on a 2005-2008 Audi RS4?

The 2005-2008 Audi RS4 features 14.4-inch ventilated front brake rotors and 12.8-inch ventilated rear brake rotors. The front brakes are equipped with 6-piston fixed calipers, while the rear uses single-piston floating calipers. The system is compatible with brake pads designed for high-performance applications, such as those with a high friction coefficient. The recommended brake fluid is DOT 4 or higher.

Q2

What maintenance is required for the brakes on a 2005-2008 Audi RS4?

Regular brake maintenance includes inspecting brake pads every 10,000 miles, replacing them when worn below 1/8 inch, and checking rotors for warping or excessive wear. Brake fluid should be replaced every 30,000 miles, and the entire system should be inspected for leaks and damage. Cleaning brake components with a wire brush and lubricating moving parts can prevent corrosion and ensure smooth operation.

Q3

How do I replace the brake pads on a 2005-2008 Audi RS4?

To replace the brake pads, start by raising the vehicle and removing the wheels. Remove the caliper bolts and slide the caliper off the rotor, taking care not to damage the brake hose. Remove the old pads and install the new ones, ensuring they are properly seated. Reinstall the caliper, tighten the bolts to the specified torque (approximately 40 ft-lbs), and bleed the brake system if necessary. Repeat for all wheels and test the brakes before driving.

Q4

What are common issues with the brakes on a 2005-2008 Audi RS4?

Common issues include excessive wear on the front brake pads due to high-performance driving, warped rotors from excessive heat, and brake fluid leaks from the master cylinder or ABS lines. Symptoms may include a spongy brake pedal, grinding noises, or a warning light on the dashboard. Inspect the brake system regularly and address any issues promptly to maintain safety and performance.

Q5

How can I optimize the performance of my Audi RS4 brakes?

To optimize brake performance, use high-friction brake pads designed for performance driving, ensure proper brake fluid levels, and avoid overheating the brakes by allowing cooling during heavy use. Upgrading to slotted or drilled rotors can improve heat dissipation, and flushing the brake system with high-quality DOT 4 fluid can maintain consistent braking performance. Always follow manufacturer guidelines and consider professional installation for upgrades.

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 RS4 Brake Service Manual

Coming Soon

Comprehensive guide covering brake system maintenance, repair, and replacement procedures for the 2005-2008 Audi RS4.

Technical Service Bulletin - Brake System Update

Coming Soon

Official Audi bulletin detailing updates and improvements for the brake system, including parts upgrades and service procedures.

Audi RS4 Brake Parts Catalog

Coming Soon

Detailed listing of genuine Audi brake components, including part numbers, specifications, and compatibility information.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

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