BMW X3 2017-2021 Brakes Specifications
Find detailed brake specifications for the 2017-2021 BMW X3 (G01). Includes rotor sizes, caliper details, brake pads, and more. Essential for maintenance, repair, and upgrades.
Brake System Overview Specifications
This document provides a comprehensive overview of the brake specifications for the 2017-2021 BMW X3. It includes detailed information about the brake system components, performance capabilities, maintenance requirements, and safety features. Use this guide to understand the technical aspects of the braking system, find specific details, and perform routine maintenance tasks effectively.
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Key Specifications
Front Brake Rotor Size
13.7 in (348 mm)
Rear Brake Rotor Size
12.3 in (312 mm)
60-0 mph Stopping Distance
120 ft
Brake Fluid Type
DOT 4 / DOT 5.1
Brake Pad Replacement Interval
Every 30,000 - 50,000 miles
Available Specifications
Brake System Components
This section provides detailed information about the components that make up the braking system of the 2017-2021 BMW X3, including the front and rear brakes, brake fluid, and brake pads.
Brake System Components
This section provides detailed information about the components that make up the braking system of the 2017-2021 BMW X3, including the front and rear brakes, brake fluid, and brake pads.
Front Brake Specifications
- Brake rotor size: 13.7 inches (348 mm) in diameter
- Brake rotor thickness: 1.0 inch (25 mm)
- Caliper type: 4-piston fixed front calipers
- Brake pad material: High-performance friction material
- Brake pad wear sensor: Equipped on all models
Rear Brake Specifications
- Brake rotor size: 12.3 inches (312 mm) in diameter
- Brake rotor thickness: 0.8 inches (20 mm)
- Caliper type: 2-piston floating rear calipers
- Brake pad material: High-performance friction material
- Brake pad wear sensor: Equipped on all models
Brake Fluid and Hydraulic System
- Brake fluid type: BMW-approved DOT 4 or DOT 5.1 fluid
- Brake fluid reservoir capacity: Approximately 0.5 liters
- Hydraulic brake assist: Equipped with electromechanical parking brake
- Brake lines: Stainless steel reinforced rubber lines
- ABS system: Latest-generation Anti-lock Braking System (ABS)
Brake System Performance
This section outlines the performance capabilities of the braking system, including stopping distances, brake assist features, and heat management.
Brake System Performance
This section outlines the performance capabilities of the braking system, including stopping distances, brake assist features, and heat management.
Braking Performance
- 60-0 mph stopping distance: Approximately 120 feet
- 80-0 mph stopping distance: Approximately 220 feet
- 100-0 mph stopping distance: Approximately 320 feet
- Brake fade resistance: Optimized through vented rotors and advanced cooling
- Emergency braking: Automatic emergency braking available on certain trims
Brake Assist Systems
- Brake Assist (BA): Provides additional braking force during emergency stops
- Cornering Brake Control (CBC): Improves stability during cornering
- Dynamic Brake Control (DBC): Prevents wheel lock-up during aggressive braking
- Hill Descent Control (HDC): Assists with controlled downhill braking
- Automatic Hold Function: Engages brakes at stop, releases when accelerator is pressed
Maintenance and Service
This section provides guidelines for maintaining and servicing the brake system, including inspection intervals, wear indicators, and replacement procedures.
Maintenance and Service
This section provides guidelines for maintaining and servicing the brake system, including inspection intervals, wear indicators, and replacement procedures.
Brake Maintenance Schedule
- Brake fluid change interval: Every 30,000 to 50,000 miles
- Brake pad inspection interval: Every 12,500 miles or as needed
- Brake rotor inspection interval: Every 12,500 miles or as needed
- Brake line inspection interval: Every 30,000 miles
- Brake sensor replacement interval: As needed based on wear
Brake Wear Indicators
- Brake pad wear indicator: Audible and visual warning when pads reach minimum thickness
- Brake rotor wear indicator: Measured during inspection, replacement recommended at 10% wear
- Brake fluid level warning: Dashboard alert if fluid level is low
- Brake system warning lights: Illuminates if ABS, DSC, or other systems detect issues
- Parking brake indicator: Alerts if parking brake is engaged while driving
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Brakes Specifications
Overview
- Type
- Ventilated disc brakes
- Configuration
- Front and rear
- Platform
- CLAR (Cluster Architecture)
- Material
- Cast iron
- Location
- Front and rear axle
- Actuation
- Hydraulic
Dimensions
- Front Rotor Diameter
- 13.7 in (348 mm)
- Rear Rotor Diameter
- 12.3 in (313 mm)
- Front Rotor Thickness
- 1.2 in (30 mm)
- Rear Rotor Thickness
- 0.9 in (22 mm)
- Front Caliper Piston Diameter
- 1.8 in (45.7 mm)
- Rear Caliper Piston Diameter
- 1.5 in (38.1 mm)
- Minimum Allowable Rotor Thickness
- 13.0 in (330 mm) front, 11.8 in (300 mm) rear
Materials
- Rotors
- Cast iron
- Brake Pads
- Organic/semi-metallic
- Calipers
- Aluminum alloy
- Brake Lines
- Steel-reinforced rubber
Features
- Dynamic Brake Control
-
- Electronic brakeforce distribution
- Anti-lock braking system (ABS)
- Traction control integration
- Cornering Brake Control
-
- Redistributes braking force side-to-side
- Enhanced stability during cornering
- Reduced understeer
- Brake Fade Compensation
-
- Maintains braking effectiveness
- Reduces brake fade under repeated use
- Optimizes thermal management
- Wet Brake Drying
-
- Automatically applies light brake pressure
- Removes water from brake rotors
- Enhances wet weather braking
- Emergency Braking
-
- Automatic emergency braking
- Pedal-travel sensors
- Emergency brake lights activation
- Manual Brake Hold
-
- Hill start assist
- Electronic parking brake
- Creep control in traffic
Safety Features
- Emergency Brake Assist
-
- Automatic emergency braking
- Collision mitigation
- Pre-crash system preparation
- Stability Control integration
-
- Dynamic Stability Control (DSC)
- Brake assist
- Cornering Brake Control (CBC)
- Brake Pad Wear Sensors
-
- Monitors pad thickness
- Alerts driver when replacement is needed
- Prevents metal-to-metal contact
Comfort Features
- Automatic Hold Function
-
- Hill start assist
- Electronic parking brake
- Creep control in traffic
- Brake Creep Control
-
- Prevents vehicle creep
- Smooth stop-and-go traffic driving
- Reduces driver fatigue
- Noise Reduction Features
-
- Brake pad wear indicators
- Silent braking technology
- Anti-squeal shims
Accessories
- Performance Brake Pads
-
- High-friction coefficient
- Fade-resistant
- Longer lifespan
- Brake Fluid
-
- BMW-approved DOT 4
- High boiling point
- Corrosion protection
- Brake Rotor Kits
-
- Cross-drilled and slotted
- Ventilated for heat dissipation
- Precision-machined
Maintenance
- Service interval
-
- Brake pads: every 30,000 - 50,000 miles
- Brake rotors: every 50,000 - 70,000 miles
- Brake fluid: every 30,000 miles
- Inspection: every 12,000 miles
- Maintenance Notes
-
- Use only BMW-approved parts
- Follow proper bleeding procedures
- Inspect brake lines and hoses
- Check ABS sensor functionality
Warranty
- New Vehicle Limited Warranty
- Coverage: Bumper-to-bumperMiles: 50,000Years: 4
- Maintenance Warranty
- Coverage: Maintenance servicesMiles: 36,000Years: 3
- Parts Warranty
- Coverage: Replacement partsMiles: unlimitedYears: 2
- Rust Perforation Warranty
- Coverage: Body panelsMiles: unlimitedYears: 12
Production Details
- Manufacturer
- BMW Group
- Manufacturing Process
-
- Precision machining
- Thermal treatment
- Surface coating
- Assembly and testing
- Quality Control
- inspection: CMM (Coordinate Measuring Machine)Testing: Acoustic and dynamic testingCertification: ISO/TS 16949
- Sustainability Practices
-
- Recycling of materials
- Energy-efficient production
- Reduced emissions
- Eco-friendly packaging
- Production Metrics
- Annual Production: Over 100,000 unitsCycle Time: 10-15 minutes per unitYield Rate: 98%Defect Rate: Less than 1%
Service Information for Brakes Service
Maintenance and service requirements specific to brakes
- Inspect brake pads and rotors
- Check brake fluid level
- Inspect brake lines and hoses
- Test ABS and DSC systems
Visual inspection only, no replacement needed unless worn
- Replace brake pads
- Inspect and machine rotors
- Flush and replace brake fluid
- Check brake sensors
Use BMW-approved parts and follow proper procedures
- Replace brake rotors
- Replace brake pads
- Flush and replace brake fluid
- Inspect and replace brake hoses if needed
Major service - critical for maintaining brake performance
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the brakes for the 2017-2021 BMW X3?
What are the technical specifications of the brakes for the 2017-2021 BMW X3?
The 2017-2021 BMW X3 features a braking system with vented disc brakes front and rear. The front brake rotors measure 13.7 inches in diameter, while the rear rotors are 12.9 inches. The system includes 4-piston fixed calipers in the front and 2-piston floating calipers at the rear. These specifications ensure optimal braking performance and compatibility with the vehicle's dynamic capabilities.
Q2 What are the maintenance requirements for the brakes?
What are the maintenance requirements for the brakes?
Regular brake maintenance for the 2017-2021 BMW X3 includes inspecting brake pads every 12,000 to 15,000 miles, replacing them when worn below 3mm, and checking rotor thickness every 30,000 miles. Brake fluid should be replaced every 2 years or as specified in the owner's manual. Additionally, brake sensors should be monitored for wear and replaced as needed.
Q3 How do I install or replace the brakes?
How do I install or replace the brakes?
To replace the brakes on a 2017-2021 BMW X3, start by lifting the vehicle and removing the wheels. Inspect the brake rotor for excessive wear or warping. Remove the caliper and old brake pads, then install the new pads. If replacing the rotor, remove the old one and install the new rotor. Reattach the caliper and tighten all bolts to the specified torque. Repeat for all wheels and test the brakes thoroughly before driving.
Q4 How do I troubleshoot common brake issues?
How do I troubleshoot common brake issues?
Common brake issues in the 2017-2021 BMW X3 include spongy brakes, grinding noises, or dashboard warning lights. Check brake fluid levels and top off if necessary. Inspect brake pads and rotors for wear. If grinding is present, it may indicate worn pads or warped rotors. If the brake warning light is on, use a scan tool to check for fault codes and address the issue accordingly.
Q5 How can I optimize the performance of my brakes?
How can I optimize the performance of my brakes?
To optimize brake performance on the 2017-2021 BMW X3, ensure proper brake pad and rotor maintenance. Use high-quality BMW-approved brake components. Avoid aggressive driving and heavy braking, which can overheat the brakes. Consider upgrading to performance brake pads and rotors for improved stopping power and heat dissipation. Regularly clean brake components to prevent corrosion.
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 X3 Brake Service Manual
Coming SoonComprehensive guide for servicing and maintaining the braking system of the 2017-2021 BMW X3.
Technical Service Bulletin: Brake System Updates
Coming SoonSummary of updates and technical bulletins related to the braking system of the 2017-2021 BMW X3.
BMW X3 Brake Parts Catalog
Coming SoonDetailed list of genuine BMW brake components and accessories for the 2017-2021 X3.
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Technical Information
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