Subaru Subaru Impreza 2011-2016 Suspension Specifications
Explore the complete suspension specifications for the 2011-2016 Subaru Impreza. This guide covers spring rates, shock absorbers, sway bars, and alignment settings, providing essential information for repairs, upgrades, and maintenance.
Overview Specifications
This document provides detailed specifications and technical information about the suspension system of the 2011-2016 Subaru Impreza. It is designed to assist enthusiasts, mechanics, and owners in understanding the suspension components, their functions, and key measurements. Use this guide to navigate through sections, find specific details, and reference quick specifications for maintenance or upgrades.
How to Use
Use the search functionality to locate specific terms or components within the document. Enter keywords like 'strut', 'spring rate', or 'alignment' to quickly find relevant information.
Navigate through the document using the section titles and subsections. Each section is organized by major suspension components, with detailed points listed under each subsection for easy reference.
Key Specifications
Front Strut Diameter
50 mm
Rear Strut Diameter
45 mm
Front Spring Rate
2.8 kg/mm
Rear Spring Rate
2.5 kg/mm
Anti-Roll Bar Diameter
16 mm
Available Specifications
Front Suspension
The front suspension of the 2011-2016 Subaru Impreza utilizes a MacPherson strut design, which provides a balance of comfort and handling. This section covers the key components, including struts, springs, and control arms, along with their specifications and functions.
Front Suspension
The front suspension of the 2011-2016 Subaru Impreza utilizes a MacPherson strut design, which provides a balance of comfort and handling. This section covers the key components, including struts, springs, and control arms, along with their specifications and functions.
Strut Assembly
- MacPherson strut design with integrated coil spring
- Strut diameter: 50 mm
- Spring rate: 2.8 kg/mm (varies by trim)
- Gas-filled shock absorbers for improved damping
- Dust boots and bump stops included
- Replaceable strut mounts
Control Arms and Bushings
- Lower control arms made of stamped steel
- Front bushings: rubber for vibration damping
- Rear bushings: urethane for improved durability
- Ball joints: maintenance-free design
- Anti-roll bar attachment points
Rear Suspension
The rear suspension features a double-wishbone setup, offering enhanced stability and handling. This section details the components, including the rear struts, trailing arms, and lateral links, along with their technical specifications.
Rear Suspension
The rear suspension features a double-wishbone setup, offering enhanced stability and handling. This section details the components, including the rear struts, trailing arms, and lateral links, along with their technical specifications.
Strut Assembly
- Independent double-wishbone design
- Strut diameter: 45 mm
- Spring rate: 2.5 kg/mm (varies by trim)
- Gas-filled shock absorbers
- Integrated dust boots and bump stops
- Replaceable strut mounts
Trailing Arms and Lateral Links
- Trailing arms: steel construction
- Lateral links: adjustable for alignment
- Bushings: rubber for comfort and durability
- Anti-roll bar: 16 mm diameter
- Mounting points for stability
Alignment Specifications
Proper alignment is critical for optimal handling and tire wear. This section provides the factory-recommended alignment settings for the 2011-2016 Subaru Impreza, including camber, caster, and toe angles.
Alignment Specifications
Proper alignment is critical for optimal handling and tire wear. This section provides the factory-recommended alignment settings for the 2011-2016 Subaru Impreza, including camber, caster, and toe angles.
Front Alignment
- Camber: -0.5° to 0.5°
- Caster: 3.5° to 4.5°
- Toe: 0.0° to 0.2° (slight toe-in)
- Steering axis inclination: 12.5°
Rear Alignment
- Camber: -1.5° to -0.5°
- Toe: 0.0° to 0.2° (slight toe-in)
- Thrust angle: 0.0°
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Component Specifications
Overview
- Type
- Independent MacPherson Strut (Front), Double Wishbone (Rear)
- Configuration
- Front and Rear Independent Suspension
- Platform
- Subaru Global Platform
- Material
- High-Strength Steel and Aluminum Alloy
- Location
- Front and Rear Axles
Dimensions
- Front Strut Length
- 22.5 inches (571.5 mm)
- Rear Shock Length
- 20.8 inches (528.3 mm)
- Front Spring Rate
- 2.8 kg/mm
- Rear Spring Rate
- 3.2 kg/mm
- Front Sway Bar Diameter
- 21 mm (0.83 in)
- Rear Sway Bar Diameter
- 16 mm (0.63 in)
- Wheel Travel Front
- 6.3 inches (160 mm)
- Wheel Travel Rear
- 5.9 inches (150 mm)
Materials
- Strut Body
- High-Strength Steel
- Spring
- Chromium-Silicon Alloy
- Control Arms
- Aluminum Alloy
- Bushings
- Polyurethane and Rubber Composite
- Sway Bar
- Hollow Steel Tubing
Features
- Damping
-
- Gas-Pressurized Shock Absorbers
- Twin-Tube Design
- Variable Damping Rates
- Stability
-
- Electronic Stability Control Integration
- Anti-Roll Bars
- Dynamic Torque Vectoring
- Adjustability
-
- Height-Adjustable Coilovers (Optional)
- Camber Adjustment
- Toe Adjustment
- Durability
-
- Corrosion-Resistant Coatings
- Reinforced Mounting Points
- Sealed Bearings
- Performance
-
- Enhanced Cornering Stability
- Reduced Body Roll
- Improved Weight Distribution
Safety Features
- Structural integrity
-
- Crash-Energy Absorption
- Reinforced Subframe
- Stability
-
- Traction Control Integration
- ABS Compatibility
- Durability
-
- Rust-Resistant Materials
- High-Cycle Fatigue Resistance
Comfort Features
- Ride Quality
-
- Progressive Rate Springs
- Hydraulic Bump Stops
- Noise Reduction
-
- Insulated Bushings
- Sound-Dampening Materials
- Vibration Control
-
- Hydraulic Engine Mounts
- Dynamic Dampers
- Adjustability
-
- Optional Adaptive Dampers
- Customizable Ride Height
Accessories
- Upgrades
-
- Performance Coilovers
- Adjustable Sway Bars
- Polyurethane Bushings
- Tools
-
- Strut Spring Compressor
- Torque Wrench
- Alignment Kit
- Maintenance
-
- Replacement Struts
- Shock Absorbers
- Bushing Kits
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect Struts and Shocks
- Check Bushings for Wear
- Lubricate Suspension Joints
- Tighten Mounting Bolts
- Inspect Sway Bar Links
- Maintenance Notes
- Regular alignment checks recommended after suspension work.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Defects in Materials and Workmanship
- Powertrain
- Miles: 60,000Years: 5Coverage: Suspension Components
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Perforation from Rust
- Extended
- Miles: 100,000Years: 7Coverage: Optional Extended Coverage
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision Forging
- Robotic Welding
- Heat Treatment
- Quality Control
- Testing: Durability Testing, Vibration Analysis, Corrosion Resistance TestingStandards: ISO 9001 Certification, JIS Quality Standards
- Sustainability
-
- Recycled Materials Usage
- Energy-Efficient Manufacturing
- Waste Reduction Programs
- Production Metrics
- Annual Output: 500,000 UnitsDefect Rate: Less than 0.1%Lead Time: 4 Weeks
Service Information for Suspension Service
Maintenance and service requirements specific to the suspension system
- Inspect Struts and Shocks for Leaks
- Check Bushings and Mounts for Wear
- Lubricate Suspension Joints
- Tighten All Suspension Bolts
- Inspect Sway Bar Links and Bushings
Ensure proper torque specifications are followed during reassembly.
- Replace Worn Bushings
- Check Alignment Specifications
- Inspect Coil Springs for Sagging
- Test Shock Absorber Performance
- Inspect Subframe for Damage
Alignment should be checked after any suspension component replacement.
- Replace Struts and Shocks
- Inspect and Replace Sway Bar Links
- Check Control Arms for Wear
- Perform Full Suspension Overhaul
- Test Electronic Stability Control Integration
Major service may require specialized tools and equipment.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What suspension components are compatible with the 2011-2016 Subaru Impreza?
What suspension components are compatible with the 2011-2016 Subaru Impreza?
The 2011-2016 Subaru Impreza is compatible with a range of suspension components, including struts, shocks, springs, and sway bars designed for this model. Key specifications include front strut dimensions of 50mm diameter and rear shock dimensions of 46mm. Ensure compatibility by verifying part numbers with OEM or aftermarket suppliers. Cross-referencing with Subaru part numbers 20311FG000 (front) and 20380FG010 (rear) is recommended.
Q2 What is the recommended maintenance schedule for the suspension system?
What is the recommended maintenance schedule for the suspension system?
Regular maintenance for the 2011-2016 Subaru Impreza suspension includes inspecting struts, shocks, and bushings every 30,000 miles. Replace worn components like strut mounts or sway bar links as needed. Lubricate bushings annually and check alignment every 15,000 miles. Severe driving conditions may require more frequent inspections. Always refer to the owner's manual for specific intervals and guidelines.
Q3 How do I replace the front struts on a 2011-2016 Subaru Impreza?
How do I replace the front struts on a 2011-2016 Subaru Impreza?
To replace front struts, safely lift the vehicle and remove the wheels. Disconnect the sway bar link and brake line bracket. Unbolt the strut from the steering knuckle and remove the top strut mount nuts under the hood. Install the new strut in reverse order, ensuring proper torque specifications: 162 Nm for the steering knuckle bolts and 39 Nm for the top mount nuts. Perform an alignment after installation.
Q4 What are common suspension issues and how can I troubleshoot them?
What are common suspension issues and how can I troubleshoot them?
Common issues include clunking noises, uneven tire wear, and poor handling. Clunking often indicates worn strut mounts or sway bar links. Uneven tire wear suggests alignment issues or damaged springs. Poor handling may result from worn shocks or bushings. Inspect components for damage, check for loose bolts, and test drive to isolate the problem. Replace faulty parts as needed.
Q5 How can I optimize the suspension performance of my Subaru Impreza?
How can I optimize the suspension performance of my Subaru Impreza?
To optimize performance, consider upgrading to performance shocks, lowering springs, or adjustable sway bars. Ensure proper alignment and tire pressure. Regularly inspect and maintain suspension components. For track use, install coilovers for adjustable ride height and damping. Always balance performance upgrades with daily driving comfort and safety.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2011-2016 Subaru Impreza Service Manual
Coming SoonComprehensive guide covering suspension system maintenance, repair, and specifications for the 2011-2016 Subaru Impreza.
Subaru Technical Service Bulletin: Suspension Noise
Coming SoonTSB addressing common suspension noise issues in 2011-2016 Impreza models, including diagnostic steps and repair procedures.
Subaru Impreza Suspension Parts Catalog
Coming SoonDetailed catalog of OEM and aftermarket suspension parts for the 2011-2016 Subaru Impreza, including part numbers and compatibility information.
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