BMW 340i 2005-2011 Suspension Specifications
Comprehensive technical specifications for the 2005-2011 BMW 340I suspension system, including front and rear suspension components, alignment settings, torque values, and maintenance procedures.
Overview Specifications
Comprehensive description of the suspension specifications for the 2005-2011 BMW 340I, including key features, measurements, and technical details
How to Use
Use the search function to locate specific suspension components or specifications by entering keywords such as 'spring rate', 'strut dimensions', or 'alignment settings'.
Navigate through the suspension documentation by selecting the desired section from the table of contents. Each section is organized into subsections for detailed technical information.
Key Specifications
Front Spring Rate
28 N/mm
Rear Spring Rate
32 N/mm
Front Strut Diameter
55 mm
Rear Shock Stroke
140 mm
Front Camber Range
-0.5° to -1.0°
Available Specifications
Front Suspension
Detailed specifications and technical details for the front suspension system of the 2005-2011 BMW 340I
Front Suspension
Detailed specifications and technical details for the front suspension system of the 2005-2011 BMW 340I
MacPherson Strut Assembly
- Strut type: Gas-charged monotube
- Spring rate: 28 N/mm
- Strut diameter: 55 mm
- Bump stop length: 60 mm
- Upper mount bearing type: Angular contact ball bearing
Control Arms and Bushings
- Lower control arm material: Forged aluminum
- Bushing material: Hydro rubber with fluid-filled chambers
- Control arm length: 420 mm
- Bushing durometer: 70 Shore A
- Note: Bushings are maintenance-free and designed for high durability
Note: Control arm bushings are critical for maintaining alignment and ride quality.
Rear Suspension
Technical specifications and details for the rear suspension system of the 2005-2011 BMW 340I
Rear Suspension
Technical specifications and details for the rear suspension system of the 2005-2011 BMW 340I
Multi-Link Suspension
- Spring rate: 32 N/mm
- Shock absorber type: Twin-tube gas-filled
- Trailing arm length: 480 mm
- Toe link material: High-strength steel
- Bushing type: Polyurethane with reinforced inserts
Rear Subframe
- Subframe material: Cast aluminum
- Mounting points: 4 with rubber isolators
- Subframe weight: 18.5 kg
- Isolator durometer: 65 Shore A
- Note: Subframe is designed to reduce NVH (Noise, Vibration, Harshness)
Alignment Specifications
Factory-recommended alignment settings for the 2005-2011 BMW 340I
Alignment Specifications
Factory-recommended alignment settings for the 2005-2011 BMW 340I
Front Alignment
- Camber: -0.5° to -1.0°
- Caster: 7.2° to 7.8°
- Toe-in: 0.10° to 0.20°
- Steering axis inclination: 12.5°
- Note: Alignment settings are optimized for handling and tire wear
Rear Alignment
- Camber: -1.5° to -2.0°
- Toe-in: 0.15° to 0.25°
- Thrust angle: 0° ± 0.1°
- Note: Rear camber is non-adjustable without aftermarket components
Suspension Components
Detailed specifications for key suspension components
Suspension Components
Detailed specifications for key suspension components
Springs
- Front spring free length: 380 mm
- Rear spring free length: 420 mm
- Spring wire diameter: 12.5 mm
- Spring material: High-carbon steel
- Note: Springs are coated for corrosion resistance
Shock Absorbers
- Front shock stroke: 120 mm
- Rear shock stroke: 140 mm
- Rebound damping force: 2200 N at 0.3 m/s
- Compression damping force: 1500 N at 0.3 m/s
- Note: Shock absorbers are tuned for sporty handling and comfort
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Component Specifications
Front Suspension
- Type
- MacPherson strut with lower control arm
- Spring Rate
- 28.5 N/mm
- Shock ABSorber Type
- Gas-filled monotube
- Strut Part Number
- 31316775581
- Control Arm Part Number
- 31126769717
- Bushing Material
- Rubber with aluminum housing
- Alignment Specs
- Camber: -0.5 to 0.5 degreesCaster: 6.5 to 7.5 degreesToe: 0.1 to 0.3 degrees
Rear Suspension
- Type
- Multi-link independent suspension
- Spring Rate
- 32.0 N/mm
- Shock ABSorber Type
- Gas-filled twin-tube
- Trailing Arm Part Number
- 33326770824
- Lateral Link Part Number
- 33326770825
- Bushing Material
- Polyurethane with steel housing
- Alignment Specs
- Camber: -1.5 to -0.5 degreesToe: 0.1 to 0.3 degrees
Springs
- Front Spring Part Number
- 31332227201
- Rear Spring Part Number
- 33532227202
- Front Spring Free Length
- 380 mm
- Rear Spring Free Length
- 420 mm
- Front Spring Wire Diameter
- 12.5 mm
- Rear Spring Wire Diameter
- 13.0 mm
Shock ABSorbers
- Front Shock Part Number
- 31312227203
- Rear Shock Part Number
- 33522227204
- Front Shock Stroke Length
- 150 mm
- Rear Shock Stroke Length
- 160 mm
- Front Shock Damping Force
- 1200 N
- Rear Shock Damping Force
- 1100 N
Stabilizer Bars
- Front Stabilizer Bar Diameter
- 25 mm
- Rear Stabilizer Bar Diameter
- 18 mm
- Front Stabilizer Bar Part Number
- 31352227205
- Rear Stabilizer Bar Part Number
- 33552227206
- Bushing Material
- Polyurethane
Bushings And Mounts
- Front Strut Mount Part Number
- 31306775582
- Rear Shock Mount Part Number
- 33526770826
- Front Control Arm Bushing Part Number
- 31126769718
- Rear Trailing Arm Bushing Part Number
- 33326770827
- Material
- Rubber and polyurethane composite
Wheel Alignment
- Front Camber Range
- -0.5 to 0.5 degrees
- Rear Camber Range
- -1.5 to -0.5 degrees
- Front Toe Range
- 0.1 to 0.3 degrees
- Rear Toe Range
- 0.1 to 0.3 degrees
- Caster Range
- 6.5 to 7.5 degrees
- Thrust Angle Tolerance
- ±0.2 degrees
Torque Specifications
- Front Strut Nut
- 90 Nm
- Rear Shock ABSorber Bolt
- 85 Nm
- Front Control Arm Bolt
- 120 Nm
- Rear Trailing Arm Bolt
- 110 Nm
- Stabilizer Bar Link Nut
- 50 Nm
Diagnostic Specifications
- Shock ABSorber Leak Test
- No visible fluid leakage
- Bushing Wear Limit
- No cracks or deformation exceeding 2 mm
- Spring Sag Limit
- Maximum 10 mm deviation from free length
- Alignment Tolerance
- Within ±0.2 degrees of specified range
Maintenance Specifications
- inspection Interval
- Every 30,000 miles or 24 months
- Lubrication Points
-
- Control arm bushings
- Stabilizer bar bushings
- Strut mounts
- Replacement intervals
- Shock ABSorbers: Every 60,000 milesBushings: Every 50,000 milesSprings: Inspect every 30,000 miles, replace as needed
Service Information Service
Detailed service requirements and schedules for the suspension system
- Inspect shock absorbers for leaks and wear
- Check bushings for cracks and deformation
- Verify wheel alignment specifications
Replace worn components as necessary
- Replace shock absorbers
- Inspect and lubricate suspension bushings
- Check spring free length and sag
Perform alignment after component replacement
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the recommended torque specification for the front strut mount bolts on a 2005-2011 BMW 340i?
What is the recommended torque specification for the front strut mount bolts on a 2005-2011 BMW 340i?
The recommended torque specification for the front strut mount bolts on a 2005-2011 BMW 340i is 22 Nm (16 lb-ft). Ensure the vehicle is properly supported and the suspension is unloaded before tightening to avoid damage.
Q2 What is the ride height specification for the 2005-2011 BMW 340i?
What is the ride height specification for the 2005-2011 BMW 340i?
The factory ride height for the 2005-2011 BMW 340i is approximately 140 mm (5.5 inches) from the wheel center to the fender lip for the front suspension and 135 mm (5.3 inches) for the rear suspension. Variations may occur depending on trim level and optional suspension packages.
Q3 What type of suspension system does the 2005-2011 BMW 340i use?
What type of suspension system does the 2005-2011 BMW 340i use?
The 2005-2011 BMW 340i features a MacPherson strut front suspension and a multi-link rear suspension. Optional adaptive suspension systems, such as Dynamic Damper Control (DDC), may be available depending on the trim and package.
Q4 How do I identify if my BMW 340i has the optional adaptive suspension?
How do I identify if my BMW 340i has the optional adaptive suspension?
If your BMW 340i is equipped with the optional adaptive suspension, it will have a 'Dynamic Damper Control' button located near the gear selector. Additionally, the vehicle's VIN can be decoded to confirm the presence of this feature.
Q5 What is the recommended alignment specification for the 2005-2011 BMW 340i?
What is the recommended alignment specification for the 2005-2011 BMW 340i?
The recommended alignment specifications for the 2005-2011 BMW 340i are as follows: Front Camber: -0.5° to -1.0°, Front Toe: 0.10° to 0.20°, Rear Camber: -1.5° to -2.0°, Rear Toe: 0.10° to 0.20°. These values may vary slightly depending on driving conditions and optional suspension packages.
Q6 What is the recommended procedure for replacing the rear shock absorbers on a 2005-2011 BMW 340i?
What is the recommended procedure for replacing the rear shock absorbers on a 2005-2011 BMW 340i?
To replace the rear shock absorbers, first, safely lift and support the vehicle. Remove the rear wheels and disconnect the shock absorber from the lower control arm and upper mount. Use a torque wrench to tighten the new shock absorber bolts to 90 Nm (66 lb-ft) for the lower bolt and 22 Nm (16 lb-ft) for the upper mount. Ensure proper alignment after installation.
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 340i Suspension Repair Manual
Coming SoonOfficial BMW repair manual for the 2005-2011 340i suspension system, including detailed diagrams, torque specifications, and step-by-step procedures.
Dynamic Damper Control (DDC) Overview
Coming SoonTechnical overview of the optional adaptive suspension system, including functionality, maintenance tips, and troubleshooting.
BMW 340i Alignment Specifications Guide
Coming SoonComprehensive guide to alignment specifications for the 2005-2011 BMW 340i, including factory settings and adjustments for performance driving.
Genuine BMW Suspension Parts Catalog
Coming SoonCatalog of genuine BMW suspension components for the 2005-2011 340i, including part numbers and compatibility information.
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