BMW 740i 2016-present Brakes Specifications
Detailed technical specifications for the 2016-Present BMW 740i braking system, including brake components, performance metrics, and maintenance guidelines. Ideal for technicians and enthusiasts.
Overview Specifications
Comprehensive description of the brakes specifications for the 2016-Present BMW 740i, including key features, measurements, and technical details
How to Use
Use the search function to locate specific brake specifications by entering keywords such as 'brake disc diameter' or 'brake pad thickness'.
Navigate through the brake 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
348 mm
Rear Brake Disc Diameter
345 mm
Brake Fluid Type
DOT 4 LV
Front Brake Pad Thickness (New)
12 mm
Brake Line Pressure (Max)
120 bar
Available Specifications
Brake System Overview
Detailed description of the brake system components and their functions
Brake System Overview
Detailed description of the brake system components and their functions
Brake Discs
- Front brake disc diameter: 348 mm
- Rear brake disc diameter: 345 mm
- Ventilated discs for improved heat dissipation
- Material: High-carbon cast iron
- Thickness: 30 mm (front), 24 mm (rear)
Brake Pads
- Front brake pad thickness: 12 mm (new)
- Rear brake pad thickness: 10 mm (new)
- Material: Ceramic composite
- Designed for low dust and noise
- Wear sensor integrated for monitoring
Note: Brake pad thickness should be checked regularly and replaced if below 3 mm.
Brake Calipers
Technical details and specifications of the brake calipers
Brake Calipers
Technical details and specifications of the brake calipers
Front Calipers
- Type: Fixed 4-piston calipers
- Material: Aluminum alloy
- Piston diameter: 40 mm
- Weight: 2.8 kg per caliper
- Designed for high clamping force
Rear Calipers
- Type: Floating single-piston calipers
- Material: Aluminum alloy
- Piston diameter: 38 mm
- Weight: 2.2 kg per caliper
- Integrated parking brake mechanism
Note: Rear calipers include an electric parking brake actuator.
Brake Fluid and Hydraulics
Information on brake fluid specifications and hydraulic system details
Brake Fluid and Hydraulics
Information on brake fluid specifications and hydraulic system details
Brake Fluid
- Type: DOT 4 LV (Low Viscosity)
- Recommended change interval: Every 2 years or 30,000 miles
- Boiling point: 260°C (dry), 170°C (wet)
- Volume: 1 liter required for full system flush
- Compatible with ABS and DSC systems
Hydraulic System
- Master cylinder diameter: 22.2 mm
- Brake line pressure: 120 bar (maximum)
- ABS and DSC integrated for enhanced safety
- Brake booster type: Vacuum-assisted
- System volume: 0.8 liters
Note: Ensure brake fluid levels are checked regularly to maintain system performance.
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Brakes Specifications
Brake System Type
- Front Brakes
- Ventilated disc brakes
- Rear Brakes
- Solid disc brakes
- Parking Brake
- Electromechanical parking brake
Brake Discs
- Front Disc Diameter
- 348 mm
- Front Disc Thickness
- 30 mm
- Rear Disc Diameter
- 345 mm
- Rear Disc Thickness
- 24 mm
- Material
- Cast iron with anti-corrosion coating
- Part Number Front
- 34116875432
- Part Number Rear
- 34216875433
Brake Pads
- Front Pad Thickness New
- 14 mm
- Front Pad Thickness Wear Limit
- 3 mm
- Rear Pad Thickness New
- 12 mm
- Rear Pad Thickness Wear Limit
- 2.5 mm
- Material
- Low-metallic compound
- Part Number Front
- 34116875434
- Part Number Rear
- 34216875435
Brake Calipers
- Front Caliper Type
- Fixed 4-piston caliper
- Rear Caliper Type
- Floating single-piston caliper
- Front Caliper Part Number
- 34116875436
- Rear Caliper Part Number
- 34216875437
Brake Fluid
- Type
- DOT 4 LV
- Capacity
- 1.0 liter
- Replacement interval
- Every 2 years or 30,000 miles
- Boiling Point Dry
- 260°C
- Boiling Point Wet
- 165°C
Brake Hydraulics
- Master Cylinder Diameter
- 22.2 mm
- Brake Booster Type
- Vacuum-assisted
- Brake Line Pressure
- 120 bar
- Part Number Master Cylinder
- 34316875438
Parking Brake System
- Type
- Electromechanical
- Actuation
- Automatic via button or manual override
- Cable Adjustment
- Automatic
- Part Number Actuator
- 34416875439
Brake Wear Sensors
- Front Sensor Part Number
- 34516875440
- Rear Sensor Part Number
- 34616875441
- Resistance New
- 0.5 ohms
- Resistance Worn
- Infinite (open circuit)
Brake Performance
- Stopping Distance 60 0 Mph
- 110 feet
- Pedal Force Required
- 50 N
- Deceleration Rate
- 10.5 m/s²
- Brake Assist System
- Dynamic Brake Control (DBC)
Diagnostic Specifications
- Fault Codes
-
- DSC 5E20: Brake pressure sensor fault
- DSC 5E21: Brake pad wear sensor fault
- DSC 5E22: Parking brake actuator fault
- Diagnostic Tool
- BMW ISTA
- Sensor Check interval
- Every 10,000 miles
Service Information Service
Detailed service requirements and schedules for the brake system
- Inspect brake pads and discs for wear
- Check brake fluid level and condition
- Verify parking brake functionality
Replace brake fluid if moisture content exceeds 3%
- Replace brake fluid
- Inspect brake lines and hoses for leaks or damage
- Check brake caliper operation
Perform brake system bleed if necessary
- Replace brake pads and discs if worn
- Inspect and lubricate caliper slides
- Check parking brake cables and actuator
Use only BMW-approved brake components
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of brake system does the 2016-Present BMW 740i use?
What type of brake system does the 2016-Present BMW 740i use?
The 2016-Present BMW 740i is equipped with a dual-circuit brake system with ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), and electronic brake force distribution (EBD). The front brakes are ventilated discs measuring 348x30 mm, and the rear brakes are solid discs measuring 345x24 mm.
Q2 What is the recommended brake pad replacement interval for the BMW 740i?
What is the recommended brake pad replacement interval for the BMW 740i?
The recommended brake pad replacement interval varies based on driving conditions and habits. However, typical wear indicators suggest replacement every 30,000 to 50,000 miles. Always refer to the vehicle's onboard service indicator or consult a certified BMW technician for precise assessment.
Q3 Can I replace the brake rotors without replacing the brake pads?
Can I replace the brake rotors without replacing the brake pads?
It is not recommended to replace the brake rotors without inspecting or replacing the brake pads. Rotor and pad wear are interdependent, and using worn pads on new rotors can lead to uneven wear and reduced braking efficiency. Always inspect both components and replace them as needed.
Q4 How do I reset the brake pad wear indicator on the BMW 740i?
How do I reset the brake pad wear indicator on the BMW 740i?
To reset the brake pad wear indicator, follow these steps: 1. Turn the ignition to the 'ON' position without starting the engine. 2. Navigate to the iDrive service menu. 3. Select 'Vehicle Info' > 'Vehicle Status' > 'Brake Pad Wear.' 4. Follow the on-screen instructions to reset the indicator. Ensure the brake pads and rotors are in good condition before resetting.
Q5 What is the recommended brake fluid type for the BMW 740i?
What is the recommended brake fluid type for the BMW 740i?
The BMW 740i requires DOT 4 LV (Low Viscosity) brake fluid, specifically BMW part number 83122365955. The brake fluid should be replaced every two years or as specified in the vehicle's maintenance schedule.
Q6 How do I check the brake fluid level in the BMW 740i?
How do I check the brake fluid level in the BMW 740i?
The brake fluid reservoir is located in the engine bay on the driver's side. The reservoir has minimum and maximum level markings. Ensure the vehicle is on a level surface and check the fluid level visually. If the level is low, top up with the recommended DOT 4 LV brake fluid.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
BMW Brake System Overview
Coming SoonComprehensive guide to the BMW brake system, including ABS, DSC, and brake force distribution.
Brake Pad Replacement Guide
Coming SoonStep-by-step instructions for replacing brake pads on the BMW 740i, including safety precautions.
Brake Fluid Replacement Procedure
Coming SoonDetailed procedure for replacing brake fluid in the BMW 740i, including bleeding the system.
BMW Brake System Maintenance Schedule
Coming SoonOfficial maintenance schedule for the BMW 740i brake system, including inspection and replacement intervals.
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
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.