Main points
- This comprehensive guide will walk you through everything you need to know about how to lower coil spring suspension, from choosing the right parts to ensuring a safe and successful installation.
- A higher spring rate will provide a firmer ride, while a lower spring rate will offer a more comfortable ride.
- Use a wrench or socket set to remove the bolts that secure the spring to the suspension strut or control arm.
Looking to give your car a more aggressive stance and improve handling? Lowering your coil spring suspension is a popular modification that can achieve both. But before you start wrenching, it’s essential to understand the process and the potential risks involved. This comprehensive guide will walk you through everything you need to know about how to lower coil spring suspension, from choosing the right parts to ensuring a safe and successful installation.
Understanding Coil Spring Suspension
Coil spring suspension is a common type of suspension system found in most vehicles. It uses helical springs to support the weight of the car and absorb shocks from bumps and uneven surfaces. Lowering the suspension involves reducing the height of the vehicle by replacing the factory coil springs with shorter ones. This results in a lower center of gravity, which can improve handling, cornering, and even aesthetics.
Why Lower Your Coil Spring Suspension?
Lowering your coil spring suspension offers several benefits, including:
- Improved Handling: A lower center of gravity makes the car more stable and responsive, especially during cornering. This can lead to a more enjoyable driving experience, particularly for those who enjoy spirited driving.
- Enhanced Aesthetics: A lower stance can give your car a more aggressive and sporty look, enhancing its visual appeal.
- Increased Aerodynamics: A lower ride height can improve aerodynamics, reducing drag and potentially increasing fuel efficiency.
Choosing the Right Lowering Springs
The first step in lowering your coil spring suspension is choosing the right lowering springs. There are several factors to consider:
- Drop Height: This refers to how much the car will be lowered. Lowering springs are typically available in various drop heights, ranging from a subtle 1 inch to a more aggressive 3 inches or more.
- Spring Rate: The spring rate determines how stiff the spring is. A higher spring rate will provide a firmer ride, while a lower spring rate will offer a more comfortable ride.
- Vehicle Make and Model: Different vehicles have different suspension systems, so it’s crucial to select lowering springs designed specifically for your car.
- Driving Style: Consider your driving habits when choosing lowering springs. If you primarily drive on smooth roads, a lower drop height and firmer spring rate might be suitable. If you often encounter rough roads, a higher drop height and softer spring rate might be more comfortable.
Tools and Materials You’ll Need
Before you begin, gather the necessary tools and materials:
- Jack and Jack Stands: To safely lift the vehicle.
- Torque Wrench: To tighten bolts to the correct specifications.
- Socket Set: To remove and install bolts.
- Wrench Set: For loosening and tightening nuts.
- Pry Bar: To help separate suspension components.
- New Lowering Springs: Ensure they are compatible with your vehicle.
- Grease: For lubricating suspension components.
- Safety Glasses and Gloves: To protect yourself from potential hazards.
The Lowering Process: Step-by-Step Guide
Here’s a step-by-step guide on how to lower your coil spring suspension:
1. Preparation: Park the vehicle on a level surface and engage the parking brake. Remove any unnecessary items from the trunk or cargo area to reduce weight.
2. Jacking Up the Vehicle: Using the jack, safely lift the vehicle to a height that allows you to access the suspension components. Place jack stands under the vehicle for support.
3. Removing the Old Springs: Locate the coil springs on each wheel. Use a wrench or socket set to remove the bolts that secure the spring to the suspension strut or control arm. Carefully remove the old springs.
4. Installing the New Springs: Position the new lowering springs in place. Make sure they are properly aligned with the suspension components. Secure the springs with the bolts you removed earlier.
5. Tightening the Bolts: Use a torque wrench to tighten the bolts to the manufacturer’s specifications. This ensures proper tension and prevents loosening over time.
6. Lowering the Vehicle: Slowly lower the vehicle using the jack and remove the jack stands.
7. Test Drive: Take the vehicle for a test drive to ensure everything is working correctly. Pay attention to any unusual sounds or vibrations.
Important Considerations and Safety Precautions
- Professional Installation: If you are not comfortable working on your car, it’s highly recommended to have a professional mechanic install the lowering springs.
- Wheel Alignment: After lowering your suspension, it’s essential to get your wheels aligned. This ensures proper tire wear and optimal handling.
- Suspension Components: Lowering your suspension can put extra stress on other suspension components. Inspect your shocks, struts, and other parts for signs of wear and tear.
- Ride Height: Be mindful of the drop height you choose. Lowering your car too much can affect ground clearance and make it difficult to navigate speed bumps or uneven roads.
- Legal Requirements: Some jurisdictions have regulations regarding vehicle ride height. Make sure your lowered suspension complies with local laws.
Beyond the Basics: Fine-Tuning and Customization
Once you’ve lowered your suspension, you can further customize the ride and handling by adjusting other suspension components:
- Shock Absorbers/Struts: Replacing the stock shock absorbers or struts with performance-oriented units can improve handling and control.
- Sway Bars: Larger sway bars can reduce body roll during cornering, improving handling and stability.
- Camber and Caster Adjustments: Fine-tuning camber and caster angles can optimize tire contact with the road and improve handling characteristics.
The Final Touch: A More Aggressive Stance and Enhanced Driving Experience
Lowering your coil spring suspension is a rewarding modification that can transform the look and feel of your car. By following this guide, you can achieve a more aggressive stance, improved handling, and a more enjoyable driving experience. Remember to prioritize safety, choose the right components, and perform the installation carefully.
Popular Questions
Q: Can I lower my suspension without replacing the springs?
A: While some DIY methods involve adjusting suspension components, it’s not recommended. Lowering your suspension without replacing the springs can lead to uneven wear, reduced ride quality, and potentially damage to the suspension system.
Q: How often should I inspect my suspension after lowering it?
A: It’s a good practice to inspect your suspension components regularly, especially after lowering it. Check for any signs of wear or damage, including loose bolts, worn shock absorbers, or damaged springs.
Q: What are the downsides of lowering my suspension?
A: Lowering your suspension can reduce ground clearance, making it difficult to navigate rough roads or speed bumps. It can also make your ride harsher and increase wear on other suspension components.
Q: Can I lower my suspension if I have a 4×4 vehicle?
A: It’s possible to lower a 4×4 vehicle, but it’s important to consider the intended use of the vehicle. Lowering can affect off-road capabilities and potentially damage components if used in extreme conditions.
Q: How much does it cost to lower a vehicle?
A: The cost of lowering a vehicle can vary depending on the type of lowering springs, labor costs, and any additional modifications. You can expect to pay anywhere from a few hundred dollars to a few thousand dollars for a complete lowering kit and installation.