BMW 750i 2015-present

BMW 750i 2015-present Suspension Specifications

Comprehensive technical documentation for the suspension system of the 2015-Present BMW 750i, including adaptive suspension, Dynamic Damper Control, Integral Active Steering, and detailed alignment and component specifications.

Updated Oct 14, 2023

Overview Specifications

Comprehensive description of the suspension specifications for the 2015-Present BMW 750i, including key features, measurements, and technical details. This section provides detailed insights into the advanced suspension system designed for optimal performance, comfort, and handling.

How to Use

Use the search function to locate specific suspension components or specifications by entering keywords such as 'front suspension', 'rear suspension', or 'damping system'.

Navigate through the suspension documentation by selecting the relevant section from the table of contents. Each section is organized into subsections for easy access to detailed information.

Key Specifications

Front Track Width

1620 mm

Rear Track Width

1650 mm

Spring Rate (Front)

28 N/mm

Spring Rate (Rear)

32 N/mm

Maximum Load Capacity

650 kg

Available Specifications

Front Suspension

Details about the front suspension system, including its design, components, and technical specifications.

Double Wishbone Design

Double wishbone front suspension for precise handling and stability.
Aluminum control arms reduce unsprung weight.
Front track width: 1620 mm.
Spring rate: 28 N/mm.
Anti-roll bar diameter: 28 mm.

Adaptive Air Suspension

Electronically controlled air springs for adjustable ride height.
Damping force adjusted in real-time based on driving conditions.
Maximum ground clearance: 150 mm.
Minimum ground clearance: 120 mm.
Integrated with Dynamic Damper Control (DDC).

Note: The adaptive air suspension system is optional and part of the Executive Drive Pro package.

Rear Suspension

Technical details of the rear suspension system, including its architecture and performance features.

Integral-V Multi-Link Design

Five-link rear suspension for superior ride comfort and handling.
Rear track width: 1650 mm.
Spring rate: 32 N/mm.
Anti-roll bar diameter: 22 mm.
Aluminum subframe for weight reduction.

Self-Leveling Suspension

Automatic leveling system maintains consistent ride height.
Load capacity: up to 650 kg.
Integrated with rear air springs.
Adjustable damping for comfort and sport modes.

Damping System

Information about the damping system, including its components and functionality.

Dynamic Damper Control (DDC)

Electronically adjustable shock absorbers.
Three driving modes: Comfort, Sport, and Sport+.
Damping force adjustment range: 0-100%.
Response time: less than 100 ms.

Active Roll Stabilization

Electromechanical stabilizers reduce body roll during cornering.
Maximum torque: 1200 Nm.
Integrated with the Dynamic Stability Control (DSC) system.
Adjustable stiffness based on driving conditions.

Note: Active Roll Stabilization is part of the Executive Drive Pro package.

Wheels and Tires

Specifications for the wheels and tires, including sizes and compatibility with the suspension system.

Standard Wheel Specifications

Front wheel size: 19x8.5 inches.
Rear wheel size: 19x9.5 inches.
Tire size (front): 245/45 R19.
Tire size (rear): 275/40 R19.
Wheel offset: ET30 front, ET35 rear.

Optional Wheel Packages

20-inch light-alloy wheels available as an option.
Tire pressure monitoring system (TPMS) included.
Run-flat tires standard on all models.
Maximum load rating: 950 kg per axle.

Search Specifications

Search by specification name, value, or description

Component Specifications

Front Suspension

Type: Double wishbone with air springs

Spring Rate: 22.5 N/mm

Shock ABSorber Type: Adaptive air suspension

Stabilizer Bar Diameter: 28 mm

Bushings Material: Synthetic rubber with aluminum housing

Part Numbers: Air Spring: 37116793871
Shock ABSorber: 37116850445
Stabilizer Bar Link: 31351095741

Rear Suspension

Type: Multi-link with air springs

Spring Rate: 20.8 N/mm

Shock ABSorber Type: Adaptive air suspension

Stabilizer Bar Diameter: 24 mm

Bushings Material: Synthetic rubber with aluminum housing

Part Numbers: Air Spring: 37116793872
Shock ABSorber: 37116850446
Stabilizer Bar Link: 33326775569

Air Suspension System

Compressor Type: Single-piston electric compressor

Pressure Range: 8-16 bar

Air Spring Volume: 1.2 liters per spring

Operational Temperature Range: -40°C to 120°C

Part Numbers: Compressor: 37116850447
Air Dryer: 37116850448
Pressure Sensor: 37116850449

Adaptive Damping System

Damping Force Range: 500-2500 N

Response Time: 20 ms

Modes

Comfort
Sport
Sport+

Sensor Types

Accelerometer
Position sensor

Part Numbers: Control Unit: 37116850450
Damper Valve: 37116850451

Wheel Alignment Specifications

Front Camber: -0.5° to -1.0°

Rear Camber: -1.5° to -2.0°

Front Toe: 0.10° to 0.20°

Rear Toe: 0.15° to 0.25°

Caster: 7.5° to 8.5°

Tolerances: ±0.3° for all angles

Suspension Bushings

Front Lower Control Arm Bushing Durometer: 70 Shore A

Rear Trailing Arm Bushing Durometer: 65 Shore A

Material: Hydrocarbon-resistant synthetic rubber

Replacement interval: Every 60,000 miles or 5 years

Part Numbers: Front Bushing: 31126775570
Rear Bushing: 33326775571

Suspension Mounts

Front Strut Mount Material: Reinforced polyurethane

Rear Shock Mount Material: Reinforced polyurethane

Load Capacity: 1500 kg per mount

Replacement interval: Every 100,000 miles or 10 years

Part Numbers: Front Mount: 31356775572
Rear Mount: 33526775573

Suspension Limits

Maximum Load Capacity: 650 kg

Maximum Ground Clearance: 180 mm

Minimum Ground Clearance: 120 mm

Maximum Speed With Lowered Suspension: 160 km/h

Operational Height Range: 120-180 mm

Diagnostic Specifications

Fault Codes: Air Suspension: 480A, 480B, 480C
Adaptive Damping: 481A, 481B, 481C

Diagnostic Tools

BMW ISTA
OBD-II scanner

Sensor Check interval: Every 30,000 miles

System Self Test: Performed at every ignition cycle

Maintenance Specifications

Lubrication Points

Control arm bushings
Stabilizer bar links

Lubrication interval: Every 30,000 miles

Torque Specifications: Strut Mount Nuts: 50 Nm
Control Arm Bolts: 90 Nm
Stabilizer Bar Link Nuts: 40 Nm

inspection Interval: Every 15,000 miles

Service Information Service

Detailed service requirements and schedules for the suspension system

15,000

Inspect suspension components for wear
Check air suspension system for leaks
Verify adaptive damping system functionality

Perform visual inspection and system diagnostics

30,000

Lubricate suspension bushings
Check wheel alignment
Inspect shock absorbers and mounts

Replace worn components as necessary

60,000

Replace suspension bushings
Inspect air springs for cracks
Check compressor and air dryer functionality

Follow manufacturer-recommended replacement intervals

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of suspension system does the 2015-Present BMW 750i use?

The 2015-Present BMW 750i is equipped with a double-wishbone front suspension and a multi-link rear suspension. It also features an adaptive air suspension system with Dynamic Damper Control (DDC) for enhanced ride comfort and handling.

What is the ride height adjustment range for the adaptive air suspension?

The adaptive air suspension on the BMW 750i allows for a ride height adjustment range of approximately 20 mm (0.79 inches) in both the front and rear, depending on driving conditions and selected driving mode.

How often should the suspension components be inspected?

BMW recommends inspecting the suspension components, including bushings, ball joints, and air springs, every 30,000 miles or 3 years, whichever comes first. However, more frequent inspections may be necessary if the vehicle is driven in harsh conditions.

What is the recommended tire pressure for optimal suspension performance?

For the 2015-Present BMW 750i, the recommended tire pressure is 32 psi (2.2 bar) for the front tires and 35 psi (2.4 bar) for the rear tires under normal load conditions. Adjustments may be required for heavy loads or high-speed driving.

Can the adaptive air suspension be manually adjusted?

Yes, the adaptive air suspension can be manually adjusted through the vehicle's iDrive system. Drivers can select between Comfort, Sport, and Eco Pro modes, each of which adjusts the suspension stiffness and ride height accordingly.

What are the signs of a failing air suspension system?

Common signs of a failing air suspension system include uneven ride height, excessive bouncing, unusual noises (e.g., hissing or clunking), and warning messages on the iDrive display. Immediate inspection and repair are recommended to avoid further damage.

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 750i Suspension System Overview

Coming Soon

Detailed technical overview of the suspension system, including components, functions, and maintenance tips.

Adaptive Air Suspension Troubleshooting Guide

Coming Soon

Step-by-step guide to diagnosing and troubleshooting common issues with the adaptive air suspension system.

BMW Genuine Suspension Parts Catalog

Coming Soon

Official catalog of genuine BMW suspension parts, including part numbers and compatibility information.

Dynamic Damper Control (DDC) Technical Manual

Coming Soon

In-depth technical manual covering the operation, calibration, and repair of the Dynamic Damper Control system.

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