Lowering a VY or VZ Commodore is one of the most popular suspension modifications among Holden enthusiasts. It improves stance, reduces body roll, and enhances handling when done correctly. However, improper lowering can lead to ride quality issues, tyre wear, and suspension damage.
This guide explains the best lowering methods for VY and VZ Commodores, including springs, coilovers, legal considerations, and common mistakes to avoid.
Why Lower a VY or VZ Commodore?
Lowering the suspension changes the vehicle’s centre of gravity and visual appearance.
Benefits
- Improved handling
- Reduced body roll
- Better road presence
- Enhanced cornering stability
- Sportier appearance
When done correctly, lowering can significantly improve both performance and aesthetics.
Lowering Methods
There are several ways to lower a VY or VZ Commodore, each with different costs and performance outcomes.
1. Lowering Springs
The most common and affordable option.
Types
- Mild lowering springs
- Medium lowering springs
- Super-low springs
Benefits
- Affordable upgrade
- Easy installation
- Improved stance and handling
Drawbacks
- Fixed ride height
- Can reduce ride comfort if too low
Lowering springs are ideal for street-driven vehicles.
2. Coilover Suspension
The most adjustable and performance-focused option.
Benefits
- Adjustable ride height
- Improved handling control
- Better damping (on quality kits)
Drawbacks
- Higher cost
- May require tuning for best results
Coilovers are ideal for enthusiasts and performance builds.
3. Cut Springs (Not Recommended)
A cheap but unsafe method.
Why It’s Bad
- Unpredictable handling
- Increased suspension wear
- Safety risks
- Illegal in many areas
Cutting springs is strongly discouraged.
Recommended Lowering Heights
Choosing the right drop is important for drivability and legality.
Mild Lowering
- Approx. 20–30mm drop
- Best ride comfort
Moderate Lowering
- Approx. 30–50mm drop
- Balanced performance and appearance
Aggressive Lowering
- 50mm+ drop
- Performance and show builds only
Front vs Rear Lowering Balance
Maintaining correct rake is important.
Front Lowering
- Improves steering response
- Reduces nose dive
Rear Lowering
- Improves traction appearance
- Affects load handling
Balanced lowering ensures stable handling.
Suspension Components That Should Be Replaced When Lowering
Lowering often reveals worn components.
Recommended Replacements
- Shock absorbers
- Strut mounts
- Control arm bushes
- Sway bar links
Worn components will negatively affect lowered ride quality.
Common Problems After Lowering
1. Rough Ride Quality
Cause
- Too-low springs
- Worn shocks
2. Tyre Wear Issues
Cause
- Incorrect wheel alignment
- Excessive lowering
3. Bottoming Out
Cause
- Low ride height
- Worn bump stops
4. Suspension Noise
Cause
- Old bushes
- Incorrect installation
5. Steering Problems
Cause
- Altered geometry
- Worn components
Wheel Alignment After Lowering
A wheel alignment is essential after lowering.
Benefits
- Prevents uneven tyre wear
- Restores proper handling
- Improves steering stability
Neglecting alignment is one of the most common mistakes.
Legal Considerations
Lowering laws vary by location.
General Rules
- Minimum ride height requirements
- Headlight height regulations
- Suspension travel limits
Always check local regulations before modifying suspension.
Best Lowering Setup for Daily Driving
Recommended Setup
- Mild lowering springs (20–30mm)
- Quality shock absorbers
- Standard sway bars
Benefits
- Comfortable ride
- Improved handling
- Reliable performance
Best Lowering Setup for Performance
Recommended Setup
- Coilovers
- Adjustable sway bars
- Polyurethane bushes
Benefits
- Maximum handling control
- Adjustable ride height
- Improved cornering
Best Lowering Setup for Show Cars
Recommended Setup
- Super-low springs or coilovers
- Stiffer suspension tuning
Benefits
- Aggressive stance
- Visual appeal
Common Lowering Mistakes
Going Too Low
Can cause:
- Poor ride quality
- Suspension damage
- Tyre wear
Ignoring Shock Absorber Condition
Old shocks reduce suspension effectiveness.
Skipping Wheel Alignment
Leads to uneven tyre wear and poor handling.
Using Cheap Springs
Often results in poor ride quality and sagging over time.
Benefits of Proper Lowering
Advantages
- Improved handling
- Better appearance
- Increased stability
- Enhanced driving experience
A properly lowered Commodore feels more controlled and responsive.
Lowering a VY or VZ Commodore is one of the most effective ways to improve both appearance and handling, but it must be done correctly. Choosing the right springs or coilovers, maintaining proper alignment, and replacing worn suspension components are essential for achieving a balanced and reliable setup.
A well-executed lowering setup can transform the driving experience while maintaining everyday usability. However, excessive lowering or poor-quality components can quickly lead to ride issues and increased wear.
For best results, always aim for a balanced setup suited to your driving style and road conditions.
Related Articles
- VY, VZ Commodore Suspension Problems
- VT–VZ Commodore Power Steering Problems
- Best Coilovers for Commodores
- How to Inspect a Commodore Before Buying