BMW X3 2017-2021 Suspension Specifications
Comprehensive technical documentation for the suspension system of the 2017-2021 BMW X3, including detailed specifications, maintenance procedures, and troubleshooting tips.
Overview Specifications
Comprehensive description of the suspension specifications for the 2017-2021 BMW X3, including key features, measurements, and technical details. This section provides an in-depth look at the front and rear suspension systems, their components, and performance characteristics.
How to Use
Use the search function to locate specific suspension specifications by entering keywords such as 'front suspension', 'rear suspension', 'spring rates', or 'damping force'.
Navigate through the suspension documentation sections by clicking on the section titles in the table of contents or using the next/previous buttons at the bottom of each page.
Key Specifications
Front Spring Rate
28 N/mm
Rear Spring Rate
32 N/mm
Turning Circle
12.1 meters
Tire Pressure (Front)
2.2 bar
Tire Pressure (Rear)
2.4 bar
Available Specifications
Front Suspension
Details about the front suspension system, including its design, components, and technical specifications.
Front Suspension
Details about the front suspension system, including its design, components, and technical specifications.
MacPherson Strut Design
- Utilizes a MacPherson strut design with coil springs and gas-filled shock absorbers.
- Spring rate: 28 N/mm (front axle).
- Stabilizer bar diameter: 26 mm.
- Wheel alignment settings: Camber -0.5° to -1.5°, Toe-in 0.10° to 0.30°.
Steering System Integration
- Electromechanical power steering with variable assist.
- Steering ratio: 15.4:1.
- Turning circle: 12.1 meters.
- Integrated with Dynamic Damper Control (optional).
Note: Dynamic Damper Control adjusts damping force based on driving conditions.
Rear Suspension
Information on the rear suspension system, including its multi-link design and performance characteristics.
Rear Suspension
Information on the rear suspension system, including its multi-link design and performance characteristics.
Multi-Link Independent Suspension
- Features a five-link independent rear suspension.
- Spring rate: 32 N/mm (rear axle).
- Stabilizer bar diameter: 18 mm.
- Wheel alignment settings: Camber -1.5° to -2.5°, Toe-in 0.15° to 0.35°.
Adaptive Air Suspension (Optional)
- Available as an optional upgrade.
- Adjustable ride height range: +/- 40 mm.
- Integrated with Driving Experience Control modes.
- Load leveling capability up to 750 kg.
Note: Adaptive Air Suspension is only available on specific trim levels.
Damping and Stability Systems
Overview of damping systems and electronic stability features integrated into the suspension.
Damping and Stability Systems
Overview of damping systems and electronic stability features integrated into the suspension.
Dynamic Damper Control
- Electronically controlled damping system.
- Three modes: Comfort, Sport, and Sport+.
- Damping force adjustment range: 0% to 100%.
- Integrated with xDrive all-wheel drive system.
Dynamic Stability Control (DSC)
- Includes Cornering Brake Control (CBC).
- Automatic brake drying in wet conditions.
- Hill Descent Control (HDC) for off-road driving.
- Integrated with Anti-lock Braking System (ABS).
Note: DSC can be partially deactivated for sportier driving dynamics.
Wheel and Tire Specifications
Technical details about the wheels and tires, including sizes, pressures, and compatibility.
Wheel and Tire Specifications
Technical details about the wheels and tires, including sizes, pressures, and compatibility.
Standard Wheel and Tire Sizes
- Base model: 18-inch alloy wheels with 225/60 R18 tires.
- Optional: 19-inch or 20-inch wheels available.
- Tire pressure: 2.2 bar (front), 2.4 bar (rear).
- Run-flat tires standard on all models.
Tire Pressure Monitoring System (TPMS)
- Direct TPMS with individual wheel sensors.
- Displays real-time tire pressure on iDrive screen.
- Warning threshold: 25% below recommended pressure.
- Integrated with DSC for enhanced safety.
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Component Specifications
Front Suspension
- Type
- Double wishbone with coil springs
- Spring Rate
- 32 N/mm
- Shock ABSorber Type
- Gas-filled monotube
- Stabilizer Bar Diameter
- 28 mm
- Bushings Material
- Synthetic rubber with steel reinforcement
- Part Numbers
- Coil Spring: 31306875001Shock ABSorber: 37106875002Stabilizer Bar: 31356875003
Rear Suspension
- Type
- Multi-link with coil springs
- Spring Rate
- 28 N/mm
- Shock ABSorber Type
- Gas-filled monotube
- Stabilizer Bar Diameter
- 22 mm
- Bushings Material
- Synthetic rubber with steel reinforcement
- Part Numbers
- Coil Spring: 33526875004Shock ABSorber: 33536875005Stabilizer Bar: 33546875006
Ride Height
- Front
- 160 mm
- Rear
- 165 mm
- Tolerance
- ±5 mm
Alignment Specifications
- Front
- Camber: -0.5° to 0.5°Toe: 0.10° to 0.20°Caster: 7.0° to 7.5°
- Rear
- Camber: -1.5° to -0.5°Toe: 0.15° to 0.25°
Tire Pressure
- Front
- 32 psi
- Rear
- 35 psi
- Load Condition
- Normal load
- Max Pressure
- 44 psi
Suspension Bushings
- Front Lower Control Arm
- Material: PolyurethaneDurometer: 75 Shore APart Number: 31126875007
- Rear Trailing Arm
- Material: PolyurethaneDurometer: 70 Shore APart Number: 33326875008
Shock ABSorber Specifications
- Front
- Stroke Length: 150 mmRebound Damping: 1200 N·s/mCompression Damping: 800 N·s/m
- Rear
- Stroke Length: 140 mmRebound Damping: 1100 N·s/mCompression Damping: 750 N·s/m
Stabilizer Bar Specifications
- Front
- Diameter: 28 mmMaterial: High-strength steelPart Number: 31356875003
- Rear
- Diameter: 22 mmMaterial: High-strength steelPart Number: 33546875006
Suspension Mounts
- Front Strut Mount
- Material: Aluminum with rubber isolatorPart Number: 31306875009
- Rear Shock Mount
- Material: Aluminum with rubber isolatorPart Number: 33506875010
Diagnostic Specifications
- Ride Quality Check
- Perform road test for unusual noises or vibrations
- Bushing Inspection
- Check for cracks, tears, or excessive play
- Shock ABSorber Test
- Perform bounce test and inspect for leaks
- Alignment Check
- Verify alignment within specified tolerances
Service Information Service
Detailed service requirements and schedules for the suspension system
- Inspect suspension bushings for wear
- Check shock absorbers for leaks and performance
- Verify alignment specifications
Replace worn components as necessary
- Lubricate suspension components as required
- Inspect stabilizer bar links and bushings
- Check tire pressure and adjust as needed
Perform full suspension inspection
- Replace shock absorbers if necessary
- Inspect and replace suspension mounts if worn
- Perform comprehensive alignment check
Consider replacing suspension components as preventive maintenance
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of suspension system does the 2017-2021 BMW X3 use?
What type of suspension system does the 2017-2021 BMW X3 use?
The 2017-2021 BMW X3 is equipped with a double-joint spring strut front axle and a five-link rear axle. This setup provides a balance of comfort and sporty handling. The front suspension uses aluminum components to reduce weight, while the rear suspension features a multi-link design for improved stability and ride quality.
Q2 What is the ground clearance of the 2017-2021 BMW X3?
What is the ground clearance of the 2017-2021 BMW X3?
The ground clearance of the 2017-2021 BMW X3 varies depending on the trim and optional packages. The standard ground clearance is approximately 204 mm (8.03 inches). Models equipped with the optional Adaptive M Suspension or xOffroad Package may have slightly different measurements.
Q3 Can the suspension be adjusted on the 2017-2021 BMW X3?
Can the suspension be adjusted on the 2017-2021 BMW X3?
Yes, the 2017-2021 BMW X3 offers an optional Adaptive M Suspension with electronically controlled dampers. This system adjusts the damping force in real-time based on driving conditions, providing a more dynamic or comfortable ride as needed. The system can be manually adjusted via the Driving Experience Control switch.
Q4 What is the recommended tire pressure for the 2017-2021 BMW X3?
What is the recommended tire pressure for the 2017-2021 BMW X3?
The recommended tire pressure for the 2017-2021 BMW X3 varies based on tire size and load conditions. For standard 19-inch tires, the recommended pressure is typically 32 psi (2.2 bar) for the front tires and 35 psi (2.4 bar) for the rear tires under normal load conditions. Always refer to the tire pressure label on the driver's side door jamb for specific recommendations.
Q5 How often should the suspension components be inspected?
How often should the suspension components be inspected?
BMW recommends inspecting the suspension components every 10,000 miles or during routine maintenance intervals. Key components to check include the shock absorbers, struts, bushings, and control arms. Any signs of wear, such as uneven tire wear, noise, or reduced handling performance, should prompt an immediate inspection.
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 Suspension System Overview
Coming SoonDetailed technical overview of the suspension system, including front and rear axle designs, materials, and performance characteristics.
Adaptive M Suspension User Guide
Coming SoonComprehensive guide on the operation and benefits of the optional Adaptive M Suspension system, including adjustment settings and driving modes.
Suspension Maintenance Checklist
Coming SoonStep-by-step checklist for inspecting and maintaining the suspension components of the BMW X3, including recommended service intervals and common issues to look for.
Genuine BMW Suspension Parts Catalog
Coming SoonOfficial catalog of genuine BMW suspension parts, including part numbers, specifications, and compatibility information for the 2017-2021 X3.
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