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The BMW Z4 M is a remarkable sports car, known for its performance and handling. Upgrading to performance coilovers can significantly enhance your driving experience without breaking the bank. This guide will walk you through the installation process of Z4 M performance coilovers, ensuring you can improve your car’s handling for under $2,000.
Why Upgrade to Performance Coilovers?
Performance coilovers offer several advantages over standard suspension systems, including:
- Improved Handling: Coilovers provide better control and stability, especially during cornering.
- Adjustability: Many coilovers allow you to adjust ride height and damping settings to suit your driving style.
- Enhanced Aesthetics: Lowering your car can improve its visual appeal, giving it a sportier stance.
Tools and Materials Needed
Before starting the installation, gather the following tools and materials:
- Socket set
- Wrench set
- Torque wrench
- Spring compressors
- Jack and jack stands
- Performance coilover kit
- Grease and anti-seize compound
Installation Steps
Step 1: Prepare Your Workspace
Ensure your workspace is clean and well-lit. Park your Z4 M on a flat surface and engage the parking brake. Gather all tools and materials to avoid interruptions during the installation.
Step 2: Raise the Vehicle
Using a jack, lift the front of the vehicle and secure it with jack stands. Repeat this process for the rear of the car. Ensure the vehicle is stable before proceeding.
Step 3: Remove the Wheels
Using a socket wrench, remove the wheel bolts and take off the wheels. This will provide access to the suspension components.
Step 4: Remove the Stock Suspension
To remove the stock suspension, follow these steps:
- Locate the top strut mount inside the engine bay or trunk.
- Remove the nuts securing the strut mount using a socket wrench.
- Disconnect any sway bar links or brake lines attached to the strut.
- Remove the lower strut bolt using a wrench.
- Carefully pull out the strut assembly from the vehicle.
Step 5: Install the Performance Coilovers
Now it’s time to install the new coilovers:
- Use spring compressors to compress the stock spring if necessary.
- Remove the spring from the stock strut and install it onto the new coilover.
- Attach the coilover to the lower control arm using the provided hardware.
- Secure the top mount in place and tighten the nuts.
- Repeat this process for the other side of the front suspension.
Step 6: Adjust Ride Height
Before reassembling, adjust the ride height of the coilovers to your desired level. This can usually be done by turning the adjustment collar on the coilover. Make sure both sides are even for balanced handling.
Step 7: Reassemble and Test
Once both front coilovers are installed, reattach the wheels and lower the vehicle. Tighten all bolts to the manufacturer’s specifications using a torque wrench. Repeat the installation process for the rear coilovers, ensuring you follow the same steps for removal and installation.
Final Thoughts
Installing performance coilovers on your BMW Z4 M can dramatically improve its handling and ride quality. By following this guide, you can complete the installation yourself and enjoy the benefits of enhanced performance for under $2,000. Remember to regularly check your suspension components and adjust settings as necessary to maintain optimal performance.