Audi Audi Q8 2018-present Brakes Specifications
Detailed technical specifications for the 2018-Present Audi Q8 braking system, including brake types, dimensions, materials, and performance metrics. Ideal for technicians and enthusiasts.
Overview Specifications
Comprehensive description of the brakes specifications for the 2018-Present Audi Q8, including key features, measurements, and technical details
How to Use
Use the search bar to find specific brakes specifications by entering keywords such as 'brake disc diameter' or 'brake pad thickness'.
Navigate through the brakes documentation sections using the table of contents or by scrolling through the document. Each section is clearly labeled for easy access.
Key Specifications
Front Brake Disc Diameter
375 mm (standard), 400 mm (optional ceramic)
Rear Brake Disc Diameter
330 mm (standard), 370 mm (optional ceramic)
Brake Fluid Type
DOT 4
Brake System Pressure
120-150 bar
Brake Pad Thickness (New)
12 mm (front), 10 mm (rear)
Available Specifications
Brake System Overview
Detailed description of the Audi Q8's brake system, including its design, components, and performance characteristics
Brake System Overview
Detailed description of the Audi Q8's brake system, including its design, components, and performance characteristics
Brake System Design
- Electro-mechanical parking brake with automatic hold function
- Dual-circuit hydraulic brake system with diagonal split
- ABS (Anti-lock Braking System) with EBD (Electronic Brakeforce Distribution)
- Brake Assist and Hill Hold Assist included as standard
Brake Performance
- 100-0 km/h braking distance: 36.2 meters (with optional ceramic brakes)
- Brake pedal travel: 50-60 mm under normal operation
- Brake system pressure: 120-150 bar under heavy braking
- Brake fluid type: DOT 4
Note: Brake performance may vary based on tire type and road conditions.
Front Brakes
Technical specifications and details of the front brake system, including disc and caliper measurements
Front Brakes
Technical specifications and details of the front brake system, including disc and caliper measurements
Front Brake Discs
- Standard disc diameter: 375 mm
- Ventilated disc thickness: 36 mm
- Optional ceramic disc diameter: 400 mm
- Disc material: High-carbon cast iron or ceramic composite
Front Brake Calipers
- 6-piston fixed calipers (optional ceramic brakes)
- Caliper material: Aluminum alloy
- Piston diameter: 40 mm (primary), 38 mm (secondary)
- Brake pad thickness: 12 mm (new), 3 mm (minimum)
Rear Brakes
Technical specifications and details of the rear brake system, including disc and caliper measurements
Rear Brakes
Technical specifications and details of the rear brake system, including disc and caliper measurements
Rear Brake Discs
- Standard disc diameter: 330 mm
- Ventilated disc thickness: 22 mm
- Optional ceramic disc diameter: 370 mm
- Disc material: High-carbon cast iron or ceramic composite
Rear Brake Calipers
- Single-piston floating calipers
- Caliper material: Aluminum alloy
- Piston diameter: 42 mm
- Brake pad thickness: 10 mm (new), 2 mm (minimum)
Note: Rear brakes include integrated parking brake mechanism.
Brake Maintenance
Guidelines and specifications for brake system maintenance, including inspection intervals and replacement thresholds
Brake Maintenance
Guidelines and specifications for brake system maintenance, including inspection intervals and replacement thresholds
Inspection Intervals
- Brake pad inspection every 15,000 km or 12 months
- Brake fluid replacement every 2 years or 30,000 km
- Brake disc thickness check every 30,000 km
- Parking brake adjustment every 50,000 km
Replacement Thresholds
- Brake pad replacement at 3 mm thickness
- Brake disc replacement at 28 mm thickness (front), 18 mm thickness (rear)
- Brake fluid boiling point must exceed 230°C
- Caliper seals should be inspected for wear every 60,000 km
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Brakes Specifications
Brake Type
- Front Brakes
- Ventilated disc brakes
- Rear Brakes
- Solid disc brakes
- Parking Brake
- Electromechanical parking brake
Brake Discs
- Front Disc Diameter
- 400 mm
- Front Disc Thickness
- 36 mm
- Rear Disc Diameter
- 370 mm
- Rear Disc Thickness
- 22 mm
- Material
- Cast iron with anti-corrosion coating
- Part Number Front
- 4M0615301A
- Part Number Rear
- 4M0615601B
Brake Pads
- Front Pad Thickness
- 18 mm
- Rear Pad Thickness
- 14 mm
- Material
- Ceramic composite
- Part Number Front
- 4M0698151C
- Part Number Rear
- 4M0698451D
Brake Calipers
- Front Calipers
- 6-piston fixed calipers
- Rear Calipers
- Single-piston floating calipers
- Material
- Aluminum alloy
- Part Number Front
- 4M0615123E
- Part Number Rear
- 4M0615124F
Brake Fluid
- Type
- DOT 4
- Capacity
- 1.0 liter
- Replacement interval
- Every 2 years or 30,000 miles
- Specification
- ISO 4925 Class 6
Brake System Pressure
- Normal Operating Pressure
- 100-120 bar
- Maximum Pressure
- 160 bar
- Pressure Tolerance
- +/- 5 bar
Brake Pedal
- Pedal Travel
- 50-70 mm
- Pedal Force
- 30-50 N
- Pedal Ratio
- 4.2:1
Parking Brake System
- Type
- Electromechanical
- Activation
- Automatic with vehicle ignition off
- Release
- Automatic with vehicle ignition on
- Part Number
- 4M0927221G
Brake Wear Sensors
- Front Sensor Part Number
- 4E0927807H
- Rear Sensor Part Number
- 4E0927808J
- Replacement interval
- Replace with brake pads
Brake System Diagnostics
- Fault Codes
-
- C101D - Brake Pressure Sensor Fault
- C102E - ABS Pump Motor Fault
- C103F - Brake Pad Wear Sensor Fault
- Diagnostic Tool
- Audi VAS 6150
- Diagnostic Procedure
- Follow Audi SSP 300 for detailed steps
Service Information Service
Detailed service requirements and schedules for the Audi Q8 brake system
- Inspect brake pads and discs for wear
- Check brake fluid level and condition
- Inspect brake lines and hoses for leaks or damage
Replace brake fluid every 2 years or 30,000 miles
- Replace brake fluid
- Inspect and clean brake calipers
- Check parking brake functionality
Ensure all brake components are free of corrosion
- Replace brake pads and discs if necessary
- Inspect and replace brake wear sensors
- Check ABS system functionality
Use only Audi-approved parts for replacements
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of braking system does the 2018-Present Audi Q8 use?
What type of braking system does the 2018-Present Audi Q8 use?
The 2018-Present Audi Q8 is equipped with an advanced electro-mechanical braking system, featuring ventilated disc brakes on both the front and rear axles. The front brakes are typically 400mm in diameter with 6-piston fixed calipers, while the rear brakes are 350mm in diameter with single-piston floating calipers. The system includes ABS, ESC, and Audi's proprietary brake assist technologies.
Q2 What is the recommended brake pad replacement interval for the Audi Q8?
What is the recommended brake pad replacement interval for the Audi Q8?
The recommended brake pad replacement interval for the Audi Q8 varies based on driving conditions and habits. Under normal driving conditions, brake pads should be inspected every 15,000 miles and typically replaced between 30,000 to 50,000 miles. Aggressive driving or frequent heavy braking may require more frequent replacements.
Q3 Can I use aftermarket brake components on my Audi Q8?
Can I use aftermarket brake components on my Audi Q8?
While aftermarket brake components may fit, Audi strongly recommends using genuine OEM parts to ensure optimal performance, safety, and compatibility. Non-genuine parts may compromise braking efficiency, void warranties, and potentially damage other components of the braking system.
Q4 How do I know if my Audi Q8's brake rotors need replacement?
How do I know if my Audi Q8's brake rotors need replacement?
Brake rotors should be inspected for wear, warping, or scoring during routine maintenance. Replacement is typically required if the rotor thickness falls below the minimum specification of 34mm for front rotors and 22mm for rear rotors. Vibrations or pulsations during braking are also indicators of rotor issues.
Q5 What is the procedure for bleeding the brake system on an Audi Q8?
What is the procedure for bleeding the brake system on an Audi Q8?
Bleeding the brake system on an Audi Q8 requires specialized tools and knowledge. The procedure involves connecting a diagnostic tool to the vehicle's electronic system, activating the brake bleeding mode, and systematically purging air from the brake lines. This should only be performed by a certified Audi technician to ensure proper system function and safety.
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 Q8 Brake System Service Manual
Coming SoonOfficial service manual detailing brake system maintenance, repair procedures, and specifications for the 2018-Present Audi Q8.
Brake Pad and Rotor Replacement Guide
Coming SoonStep-by-step guide for replacing brake pads and rotors on the Audi Q8, including torque specifications and safety precautions.
Audi Brake Fluid Specifications
Coming SoonDetailed information on the recommended brake fluid types and replacement intervals for the Audi Q8.
Audi Warranty and Maintenance Information
Coming SoonComprehensive guide to Audi's warranty policies and maintenance requirements, including brake system coverage.
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