Audi Audi A8 1994-2002 Brakes Specifications
Detailed technical specifications and maintenance guidelines for the braking system of the 1994-2002 Audi A8. Includes OEM part numbers, performance data, and troubleshooting tips.
Brake System Overview Specifications
This document provides a detailed overview of the brake system for the 1994-2002 Audi A8. It includes specifications, maintenance recommendations, and key components. Use this guide to understand the braking system, identify parts, and perform routine maintenance. Refer to the sections below for specific information.
How to Use
To find specific information, use the search function with keywords like 'front brakes' or 'ABS'. Filter results by section to narrow down your search effectively.
Navigate through the sections using the table of contents. Each section is divided into subsections for easy access. Start with the quick reference for key specifications.
Key Specifications
Front Brake Rotor Size
280 mm
Rear Brake Rotor Size
245 mm
Brake Pad Replacement Interval
30,000 - 50,000 miles
Recommended Brake Fluid
DOT 4
ABS Type
Bosch 5.3
Available Specifications
Front Brake System
The front brake system of the 1994-2002 Audi A8 features ventilated disc brakes with floating calipers, ensuring efficient heat dissipation and consistent braking performance.
Front Brake System
The front brake system of the 1994-2002 Audi A8 features ventilated disc brakes with floating calipers, ensuring efficient heat dissipation and consistent braking performance.
Front Brake Discs
- Disc diameter: 280 mm
- Thickness: 28 mm
- Material: Ventilated steel
- Minimum thickness: 22 mm
- Replacement interval: Every 30,000 to 50,000 miles
Front Brake Calipers
- Type: Floating caliper
- Number of pistons: 2
- Material: Aluminum
- Lubrication: Silicone-based grease
- Bleeding procedure required every 2 years
Front Brake Pads
- Material: Semi-metallic
- Thickness: 12 mm
- Wear limit: 2 mm
- Replacement interval: Every 30,000 to 50,000 miles
- Bedding-in procedure recommended after replacement
Rear Brake System
The rear brake system consists of solid disc brakes with floating calipers, designed for durability and reliable stopping power.
Rear Brake System
The rear brake system consists of solid disc brakes with floating calipers, designed for durability and reliable stopping power.
Rear Brake Discs
- Disc diameter: 245 mm
- Thickness: 20 mm
- Material: Solid steel
- Minimum thickness: 18 mm
- Replacement interval: Every 30,000 to 50,000 miles
Rear Brake Calipers
- Type: Floating caliper
- Number of pistons: 1
- Material: Aluminum
- Lubrication: Silicone-based grease
- Bleeding procedure required every 2 years
Rear Brake Pads
- Material: Semi-metallic
- Thickness: 10 mm
- Wear limit: 2 mm
- Replacement interval: Every 30,000 to 50,000 miles
- Bedding-in procedure recommended after replacement
ABS and Electronic Controls
The Anti-lock Braking System (ABS) enhances braking stability by preventing wheel lock-up, utilizing advanced sensors and control modules.
ABS and Electronic Controls
The Anti-lock Braking System (ABS) enhances braking stability by preventing wheel lock-up, utilizing advanced sensors and control modules.
ABS Components
- Control module: Bosch 5.3
- Wheel speed sensors: Active type
- Valve block: 4-channel
- Pump: Electric
- Relay: Integrated into control module
Electronic Brake Features
- EBV (Electronic Brakeforce Distribution)
- ASR (Anti-Slip Regulation)
- EDL (Electronic Differential Lock)
- ABS active at speeds above 6 km/h
- Automatic brake system test on ignition
Brake Fluid and Maintenance
Regular maintenance of brake fluid and system components ensures optimal braking performance and safety.
Brake Fluid and Maintenance
Regular maintenance of brake fluid and system components ensures optimal braking performance and safety.
Brake Fluid Specifications
- Recommended fluid: DOT 4
- Change interval: Every 2 years or 24,000 miles
- Fluid capacity: 1 liter
- Bleeding procedure required after fluid change
- Use only approved DOT 4 fluid
Brake System Maintenance
- Inspect brake pads every 10,000 miles
- Inspect discs every 15,000 miles
- Clean and lubricate caliper slides every 30,000 miles
- Replace wear sensors when pads are replaced
- Check brake hoses every 30,000 miles
Warranty and Service
Understand the warranty coverage and recommended service intervals to maintain your Audi A8's braking system.
Warranty and Service
Understand the warranty coverage and recommended service intervals to maintain your Audi A8's braking system.
Warranty Information
- Brake components: 2 years or 24,000 miles
- ABS system: 2 years or 24,000 miles
- Warranty void if non-OEM parts are used
- Extended warranty available through dealerships
- Coverage includes parts and labor
Service Intervals
- Brake fluid: Every 2 years or 24,000 miles
- Brake pads: Every 30,000 to 50,000 miles
- Brake discs: Every 30,000 to 50,000 miles
- ABS system: Every 5 years or 50,000 miles
- Brake hoses: Every 10 years or 100,000 miles
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Brakes Specifications
Overview
- Type
- disc brakes front and rear
- Configuration
- dual-circuit with diagonal split
- Platform
- D2 Audi A8 platform
- Material
- cast iron front rotors, ventilated; cast iron rear rotors, solid
- Location
- front and rear axle
Dimensions
- Front Rotor Diameter
- 323 mm (12.72 in)
- Front Rotor Thickness
- 30 mm (1.18 in)
- Rear Rotor Diameter
- 298 mm (11.73 in)
- Rear Rotor Thickness
- 20 mm (0.79 in)
- Brake Pad Thickness
- 10 mm (0.39 in) minimum
- Master Cylinder Bore Diameter
- 25.4 mm (1.0 in)
Materials
- Rotors
- cast iron
- Brake Pads
- semi-metallic
- Calipers
- aluminum alloy
- Brake Lines
- steel-reinforced rubber
- Brake Fluid
- DOT 4 synthetic glycol-ether
Features
- Brake System Features
-
- Servotronic speed-sensitive power assist
- Electronic Brakeforce Distribution (EBD)
- Automatic Brake Drying (ABD)
- Brake Assist (BA)
- Hill Descent Control (HDC)
- ABS Features
-
- Four-wheel Anti-lock Braking System (ABS)
- Electronic Differential Lock (EDL)
- Traction Control System (TCS)
- Anti-Slip Regulation (ASR)
- Assist Features
-
- Parking brake with electronic release
- Emergency Brake Assist (EBA)
- Brake pad wear indicator
Safety Features
- Crash Safety
-
- Crash-optimized brake pedal
- Reinforced brake system components
- Automatic emergency braking preparation
- System Monitoring
-
- Brake fluid level sensor
- Brake pad wear sensor
- ABS and EBD system monitoring
Comfort Features
- Noise Reduction
-
- Damped brake rotors
- Low-dust brake pads
- Noise-abating brake shims
- Pedal Feel
-
- Progressive brake pedal
- Adjustable brake pedal position
- Soft-stop brake pedal
Accessories
- Upgrade Kits
-
- High-performance brake pads
- Cross-drilled brake rotors
- Stainless steel brake lines
- Sensors And Monitors
-
- Brake pad wear sensors
- Brake fluid level sensor kit
- ABS system diagnostic tool
- Cleaning And Maintenance
-
- Brake cleaner spray
- Brake lubricant
- Brake rotor resurfacing kit
Maintenance
- Service interval
- Every 15,000 miles (24,000 km) or 12 months
- Service Items
-
- Inspect brake pads and rotors
- Check brake fluid level and condition
- Test ABS and EBD system functionality
- Inspect brake lines and hoses
- Clean and lubricate brake components
- Maintenance Notes
- Replace brake pads when thickness reaches 10 mm (0.39 in), Replace brake fluid every 30,000 miles (48,000 km)
Warranty
- Basic
- Miles: 48,000 milesYears: 4 yearsCoverage: Brake system components
- Corrosion
- Miles: 120,000 milesYears: 12 yearsCoverage: Brake rotors and drums
- Emissions
- Miles: 98,000 milesYears: 8 yearsCoverage: Brake system components related to emissions
- Roadside Assistance
- Miles: Unlimited milesYears: 4 yearsCoverage: Brake system related issues
Production Details
- Manufacturer
- Name: Audi AGLocation: Neckarsulm, Germany
- Manufacturing Process
-
- CNC machining of brake components
- High-temperature coating of brake rotors
- Robotized assembly of brake calipers
- Laser-cutting of brake lines
- Quality Control
- inspection: Dimensional checks, Surface finish analysis, Functional testingCertifications: ISO 9001:2015, IATF 16949:2016, AQAP 4
- Sustainability Practices
-
- Recycling of brake materials
- Use of eco-friendly coatings
- Energy-efficient manufacturing processes
- Production Metrics
- Annual Production: Over 100,000 unitsLead Time: 6-8 weeksQuality Rate: 99.8% defect-free rate
Service Information for brakes Service
Maintenance and service requirements specific to this component
- Inspect brake pads and rotors for wear
- Check brake fluid level and condition
- Test ABS and EBD system functionality
- Inspect brake lines and hoses for damage
- Clean and lubricate brake components
Replace brake pads if thickness is below 10 mm (0.39 in)
- Replace brake fluid
- Inspect brake calipers for proper function
- Check brake pedal travel and feel
- Inspect parking brake mechanism
- Test brake assist system
Use DOT 4 synthetic glycol-ether brake fluid only
- Replace front and rear brake pads
- Resurface or replace brake rotors if necessary
- Inspect and replace brake lines if damaged
- Bleed brake system
- Perform full ABS system diagnostic test
Major service interval, ensure all components are inspected and replaced as needed
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the recommended brake pad thickness for the 1994-2002 Audi A8?
What is the recommended brake pad thickness for the 1994-2002 Audi A8?
The recommended minimum brake pad thickness for the 1994-2002 Audi A8 is 3mm. Below this thickness, the brake pads should be replaced to ensure optimal braking performance and safety.
Q2 What type of brake fluid should be used in the 1994-2002 Audi A8?
What type of brake fluid should be used in the 1994-2002 Audi A8?
The 1994-2002 Audi A8 requires DOT 4 brake fluid. The brake fluid should meet Audi specification VW 501 14. It is important to replace the brake fluid every 2 years or 30,000 miles, whichever comes first, to maintain braking efficiency.
Q3 What is the brake rotor thickness specification for the 1994-2002 Audi A8?
What is the brake rotor thickness specification for the 1994-2002 Audi A8?
The minimum allowable brake rotor thickness for the 1994-2002 Audi A8 is 28.4mm for the front rotors and 18.4mm for the rear rotors. Rotors should be replaced if they are worn below these specifications or if they exhibit significant scoring or warping.
Q4 How often should the brake system be inspected on a 1994-2002 Audi A8?
How often should the brake system be inspected on a 1994-2002 Audi A8?
The brake system on the 1994-2002 Audi A8 should be inspected every 10,000 miles or at least once a year. This includes checking brake pad thickness, rotor condition, brake fluid level, and the integrity of brake lines and hoses.
Q5 Can I use aftermarket brake components on my 1994-2002 Audi A8?
Can I use aftermarket brake components on my 1994-2002 Audi A8?
While aftermarket brake components can be used, it is highly recommended to use genuine Audi parts or high-quality OEM-equivalent parts. Using substandard components can compromise braking performance, safety, and may void the vehicle's warranty.
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 A8 Brake System Service Manual
Coming SoonOfficial service manual for the 1994-2002 Audi A8 brake system, including detailed procedures for inspection, maintenance, and repair.
Brake Fluid Replacement Guide
Coming SoonStep-by-step guide on how to properly replace brake fluid in the 1994-2002 Audi A8, including safety precautions and recommended tools.
Brake Pad and Rotor Replacement Tutorial
Coming SoonComprehensive tutorial on replacing brake pads and rotors on the 1994-2002 Audi A8, with detailed instructions and torque specifications.
Audi A8 Brake System Troubleshooting
Coming SoonDiagnostic guide for common brake system issues in the 1994-2002 Audi A8, including symptoms, causes, and solutions.
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