BMW 340i 2019-present Brakes Specifications
Detailed technical specifications and maintenance guidelines for the 2019-Present BMW 340i braking system, including brake calipers, rotors, pads, and electronic brake force distribution (EBD).
Overview Specifications
Comprehensive description of the brakes specifications for the 2019-Present BMW 340i, 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', 'pad material', or 'caliper type'.
Navigate through the brakes documentation sections using the table of contents or by scrolling through the document. Each major 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
Stopping Distance (100 km/h to 0)
35.2 meters
Brake Pad Replacement Interval
30,000-50,000 miles
Available Specifications
Brake System Overview
Detailed description of the brake system components and their functions in the 2019-Present BMW 340i.
Brake System Overview
Detailed description of the brake system components and their functions in the 2019-Present BMW 340i.
Front Brake System
- Ventilated disc brakes with a diameter of 348 mm
- 4-piston fixed calipers with aluminum housing
- Brake pad material: low-metallic compound
- Brake disc thickness: 30 mm
- ABS and DSC integration for enhanced safety
Rear Brake System
- Ventilated disc brakes with a diameter of 345 mm
- Single-piston floating calipers
- Brake pad material: ceramic composite
- Brake disc thickness: 24 mm
- Automatic brake pad wear sensor
Note: The rear brake system is designed to complement the front brakes for balanced performance.
Brake Performance Specifications
Technical details about the braking performance and efficiency of the 2019-Present BMW 340i.
Brake Performance Specifications
Technical details about the braking performance and efficiency of the 2019-Present BMW 340i.
Stopping Distance
- 100 km/h to 0 in 35.2 meters
- 60 mph to 0 in 116 feet
- Deceleration rate: 1.1 g
- Brake force distribution: 60% front, 40% rear
Brake Cooling
- Integrated cooling ducts in the front bumper
- Perforated brake discs for improved heat dissipation
- Thermal stability up to 600°C
- Optional M Performance brake cooling kit available
Brake Maintenance and Service
Guidelines for maintaining and servicing the brake system of the 2019-Present BMW 340i.
Brake Maintenance and Service
Guidelines for maintaining and servicing the brake system of the 2019-Present BMW 340i.
Brake Pad Replacement
- Recommended replacement interval: 30,000-50,000 miles
- Front pad thickness limit: 3 mm
- Rear pad thickness limit: 2.5 mm
- Use only BMW-approved brake pads
Brake Fluid Specifications
- DOT 4 LV brake fluid required
- Recommended fluid change interval: 2 years or 30,000 miles
- Minimum boiling point: 230°C (dry)
- Fluid capacity: 1 liter
Note: Always use fresh brake fluid to maintain optimal braking performance.
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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
- 340 mm
- Front Disc Thickness
- 30 mm
- Rear Disc Diameter
- 330 mm
- Rear Disc Thickness
- 20 mm
- Material
- Cast iron with anti-corrosion coating
- Part Numbers
- Front Disc: 34116793871Rear Disc: 34216793872
Brake Pads
- Front Pad Thickness
- 12 mm
- Rear Pad Thickness
- 10 mm
- Material
- Low-metallic compound
- Part Numbers
- Front Pads: 34116858923Rear Pads: 34216858924
Brake Calipers
- Front Calipers
- 4-piston fixed calipers
- Rear Calipers
- Single-piston floating calipers
- Material
- Aluminum alloy
- Part Numbers
- Front Calipers: 34116793873Rear Calipers: 34216793874
Brake Fluid
- Type
- DOT 4 LV
- Capacity
- 1.0 liter
- Replacement interval
- Every 2 years or 30,000 miles
- Specification
- BMW Part No. 83192406001
Brake System Pressure
- Operating Pressure
- 120 bar
- Maximum Pressure
- 200 bar
- Tolerance
- ±5 bar
Brake Pedal
- Pedal Travel
- 50-60 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
- 34416793875
Brake Wear Sensors
- Front Sensor Part Number
- 34356793876
- Rear Sensor Part Number
- 34356793877
- Replacement interval
- Replace with brake pads
Brake System Diagnostics
- 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 or compatible OBD-II scanner
- Diagnostic Procedure
- Perform full DSC system scan
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
- Inspect brake lines and hoses for leaks or damage
Replace brake fluid every 2 years or 30,000 miles
- Replace brake fluid
- Inspect parking brake system
- Check brake system for proper operation
Replace brake pads if thickness is below 3 mm
- Replace brake pads and discs if necessary
- Inspect and replace brake wear sensors
- Perform full brake system diagnostic check
Ensure all brake components are torqued to manufacturer specifications
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of brake system does the 2019-Present BMW 340i use?
What type of brake system does the 2019-Present BMW 340i use?
The 2019-Present BMW 340i is equipped with a dual-circuit hydraulic braking system with vacuum-assisted brake booster. It features ventilated disc brakes on both the front and rear axles, with the front discs measuring 340mm in diameter and the rear discs measuring 330mm. The system includes ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), and DBC (Dynamic Brake Control) as standard.
Q2 What is the recommended brake pad replacement interval for the BMW 340i?
What is the recommended brake pad replacement interval for the BMW 340i?
The recommended brake pad replacement interval for the BMW 340i varies based on driving conditions and style. Under normal driving conditions, brake pads typically last between 30,000 to 70,000 miles. However, aggressive driving or frequent heavy braking can significantly reduce this interval. It is essential to monitor brake pad thickness regularly, with a minimum thickness of 3mm indicating the need for replacement.
Q3 Can I use aftermarket brake pads on my BMW 340i?
Can I use aftermarket brake pads on my BMW 340i?
While aftermarket brake pads can be used, it is highly recommended to use genuine BMW brake pads or BMW-approved equivalents. Genuine parts are specifically designed to meet the performance and safety standards of your vehicle. Using non-approved aftermarket parts may affect braking performance, increase wear on other components, and potentially void your warranty.
Q4 How do I check the brake fluid level in my BMW 340i?
How do I check the brake fluid level in my BMW 340i?
To check the brake fluid level, locate the brake fluid reservoir under the hood, typically on the driver's side near the firewall. The reservoir has minimum and maximum level markings. Ensure the fluid level is between these marks. BMW recommends using only DOT 4 brake fluid, and the fluid should be replaced every 2 years or 30,000 miles, whichever comes first, to maintain optimal braking performance.
Q5 What is the procedure for resetting the brake pad wear indicator on the BMW 340i?
What is the procedure for resetting the brake pad wear indicator on the BMW 340i?
To reset the brake pad wear indicator on the BMW 340i, follow these steps: 1. Turn the ignition to the 'ON' position without starting the engine. 2. Navigate to the vehicle status menu using the iDrive controller. 3. Select 'Vehicle Information' and then 'Service Requirements.' 4. Choose 'Brake Pads' and confirm the reset. Ensure the brake pads have been replaced before performing this reset to avoid false readings.
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 SoonDetailed technical overview of the BMW braking system, including components, functionality, and maintenance tips.
Brake Pad Replacement Guide
Coming SoonStep-by-step guide for replacing brake pads on the BMW 340i, including tools required and safety precautions.
Brake Fluid Maintenance
Coming SoonComprehensive guide on brake fluid types, maintenance intervals, and replacement procedures for BMW vehicles.
BMW Brake System Troubleshooting
Coming SoonCommon brake system issues, diagnostic procedures, and solutions for the BMW 340i.
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