BMW X1 2009-2015

BMW X1 2009-2015 Suspension Specifications

Comprehensive technical specifications for the 2009-2015 BMW X1 suspension system, including front and rear suspension components, alignment settings, torque values, and maintenance procedures.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the suspension specifications for the 2009-2015 BMW X1, including key features, measurements, and technical details

How to Use

Use the search function to locate specific suspension specifications by entering keywords such as 'spring rate', 'shock absorber', or 'anti-roll bar'.

Navigate through the suspension documentation sections using the table of contents or by scrolling through the major sections and subsections.

Key Specifications

Front Spring Rate

22.5 N/mm

Rear Spring Rate

18.5 N/mm

Front Anti-Roll Bar Diameter

24 mm

Rear Anti-Roll Bar Diameter

20 mm

Front Camber Angle

-0.5° to -1.5°

Available Specifications

Front Suspension

Detailed information about the front suspension system, including components, measurements, and technical specifications

MacPherson Strut Assembly

Spring rate: 22.5 N/mm
Shock absorber type: Gas-filled monotube
Strut diameter: 50 mm
Lower control arm material: Forged aluminum
Anti-roll bar diameter: 24 mm

Steering Knuckle and Hub

Steering knuckle material: Cast aluminum
Wheel hub bearing type: Sealed ball bearing
Hub bolt pattern: 5x120 mm
Hub center bore: 72.5 mm

Note: Ensure proper torque specifications when installing hub bolts to avoid damage.

Rear Suspension

Detailed information about the rear suspension system, including components, measurements, and technical specifications

Multi-Link Suspension

Spring rate: 18.5 N/mm
Shock absorber type: Twin-tube hydraulic
Trailing arm material: High-strength steel
Anti-roll bar diameter: 20 mm
Subframe material: Reinforced steel

Wheel Carrier and Bearing

Wheel carrier material: Cast aluminum
Bearing type: Tapered roller bearing
Bolt torque specification: 120 Nm
Axle shaft diameter: 32 mm

Note: Regularly inspect wheel bearings for wear and replace if necessary.

Suspension Geometry

Technical details about the suspension geometry, including alignment specifications and adjustments

Alignment Specifications

Front camber angle: -0.5° to -1.5°
Front toe-in: 0.10° to 0.20°
Rear camber angle: -1.0° to -2.0°
Rear toe-in: 0.15° to 0.25°
Caster angle: 7.0° to 8.0°

Adjustment Points

Front camber adjustment: Via strut mount
Front toe adjustment: Tie rod ends
Rear camber adjustment: Eccentric bolts
Rear toe adjustment: Trailing arm bolts

Note: Use a professional alignment tool for accurate adjustments.

Suspension Components

Detailed specifications for key suspension components, including materials and dimensions

Springs and Shock Absorbers

Front spring wire diameter: 12.5 mm
Rear spring wire diameter: 11.0 mm
Front shock absorber stroke: 150 mm
Rear shock absorber stroke: 140 mm
Shock absorber damping force: Adjustable

Bushings and Mounts

Front control arm bushing material: Rubber with steel sleeve
Rear trailing arm bushing material: Polyurethane
Strut mount material: Reinforced rubber
Bushing durometer: 70 Shore A

Note: Inspect bushings for cracks and replace if worn.

Search Specifications

Search by specification name, value, or description

Component Specifications

Front Suspension

Type: MacPherson strut

Spring Rate: 22.5 N/mm

Shock ABSorber Type: Gas-filled monotube

Strut Part Number: 31306777789

Lower Control Arm Part Number: 31126865477

Bushing Material: Rubber with steel sleeve

Anti Roll Bar Diameter: 24 mm

Anti Roll Bar Part Number: 31357896001

Maximum Load Capacity: 1200 kg

Alignment Specifications: Camber: -0.5° to +0.5°
Toe: 0.10° to 0.20°
Caster: 6.5° to 7.5°

Rear Suspension

Type: Multi-link independent

Spring Rate: 20.0 N/mm

Shock ABSorber Type: Gas-filled twin-tube

Trailing Arm Part Number: 33326777789

Lateral Link Part Number: 33326777790

Bushing Material: Polyurethane with steel sleeve

Anti Roll Bar Diameter: 18 mm

Anti Roll Bar Part Number: 33557896002

Maximum Load Capacity: 1100 kg

Alignment Specifications: Camber: -1.0° to +0.5°
Toe: 0.15° to 0.25°

Shock ABSorbers

Front Shock Part Number: 31306777789

Rear Shock Part Number: 33526777789

Front Shock Travel: 150 mm

Rear Shock Travel: 140 mm

Compression Damping: 1200 N·s/m

Rebound Damping: 1800 N·s/m

Operating Temperature Range: -40°C to +120°C

Springs

Front Spring Part Number: 31336777789

Rear Spring Part Number: 33536777789

Front Spring Free Length: 380 mm

Rear Spring Free Length: 400 mm

Front Spring Wire Diameter: 12.5 mm

Rear Spring Wire Diameter: 11.5 mm

Spring Material: High-strength steel

Bushings And Mounts

Front Strut Mount Part Number: 31306777790

Rear Shock Mount Part Number: 33526777790

Front Control Arm Bushing Part Number: 31126865478

Rear Trailing Arm Bushing Part Number: 33326777791

Bushing Durometer: 70 Shore A

Mount Material: Reinforced rubber with steel core

Wheel Alignment

Front Camber Range: -0.5° to +0.5°

Rear Camber Range: -1.0° to +0.5°

Front Toe Range: 0.10° to 0.20°

Rear Toe Range: 0.15° to 0.25°

Front Caster Range: 6.5° to 7.5°

Thrust Angle Tolerance: ±0.2°

Torque Specifications

Front Strut Nut: 90 N·m

Rear Shock ABSorber Bolt: 110 N·m

Front Control Arm Bolt: 120 N·m

Rear Trailing Arm Bolt: 130 N·m

Anti Roll Bar Link Nut: 50 N·m

Wheel Hub Nut: 180 N·m

Diagnostic Specifications

Shock ABSorber Leak Test: No visible fluid leakage

Bushing Wear Limit: 2 mm play

Spring Sag Limit: 10 mm from free length

Alignment Tolerance: ±0.2° from specification

Noise Diagnosis: Check for worn bushings or loose components

Maintenance Specifications

inspection Interval: Every 15,000 miles or 12 months

Lubrication Points

Control arm bushings
Anti-roll bar links
Strut mounts

Replacement intervals: Shock ABSorbers: 60,000 miles or 5 years
Bushings: 50,000 miles or 4 years
Springs: 100,000 miles or 10 years

Alignment Check interval: Every 30,000 miles or 2 years

Safety information

Maximum Axle Load: 2300 kg

Maximum Unsprung Mass: 50 kg per wheel

Operational Speed Limit: 250 km/h

Suspension Overload Warning: Avoid exceeding maximum load capacity

inspection Warning: Inspect suspension components after off-road use

Service Information Service

Detailed service requirements and schedules for the suspension system

15,000 miles

12 months

Inspect shock absorbers for leaks
Check bushings for wear
Verify alignment specifications

Replace worn components immediately

30,000 miles

24 months

Perform full wheel alignment
Lubricate suspension bushings
Inspect anti-roll bar links

Use only BMW-approved lubricants

60,000 miles

60 months

Replace shock absorbers
Inspect and replace worn bushings
Check spring condition

Follow torque specifications during reassembly

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of suspension system does the 2009-2015 BMW X1 use?

The 2009-2015 BMW X1 is equipped with a MacPherson strut front suspension and a multi-link rear suspension. This setup provides a balance of comfort and sporty handling, with specific tuning for the X1's dynamic driving characteristics.

What is the recommended tire pressure for the BMW X1 suspension system?

The recommended tire pressure for the 2009-2015 BMW X1 varies by trim and load conditions. For standard trims, the front tires should be inflated to 32 psi and the rear tires to 35 psi under normal load. For full load conditions, increase the rear tire pressure to 38 psi. Always refer to the tire pressure label on the driver's door jamb for exact specifications.

How often should the suspension components be inspected?

BMW recommends inspecting the suspension components every 30,000 miles or 24 months, whichever comes first. This includes checking the struts, shocks, control arms, bushings, and ball joints for wear and damage. Regular inspections help maintain optimal handling and safety.

What are the torque specifications for the front strut mount bolts?

The front strut mount bolts on the 2009-2015 BMW X1 should be torqued to 18 lb-ft (25 Nm) for the upper strut mount nuts and 59 lb-ft (80 Nm) for the lower strut-to-knuckle bolts. Always use a calibrated torque wrench and follow the manufacturer's service manual for precise tightening sequences.

Can I replace the suspension components with aftermarket parts?

While aftermarket suspension parts are available, BMW strongly recommends using genuine OEM parts to ensure compatibility, performance, and safety. Non-genuine parts may affect ride quality, handling, and could void the vehicle's warranty. Always consult with a certified BMW technician before making modifications.

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 X1 Suspension System Overview

Coming Soon

Detailed technical overview of the suspension system, including diagrams and component descriptions.

Suspension Maintenance Guide

Coming Soon

Step-by-step guide for inspecting and maintaining the suspension system, including torque specifications and safety tips.

Genuine BMW Parts Catalog

Coming Soon

Official catalog of genuine BMW suspension components for the 2009-2015 X1, including part numbers and pricing.

Suspension Troubleshooting Manual

Coming Soon

Comprehensive troubleshooting guide for common suspension issues, such as noise, vibration, and uneven tire wear.

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