BMW E90 Rear Coil Spring Replacement: Step-by-Step Guide

Author: Benjamin

Dec. 11, 2024

Automobiles & Motorcycles

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When you own a BMW E90, one maintenance task you'll likely confront is the replacement of the rear coil springs. Over time, these springs may wear down, resulting in a less smooth ride and impacted handling. To assist you in this vital maintenance process, we’ve compiled essential information from industry specialists.

Why Coil Springs Matter

As noted by Joe Hernandez, an experienced automotive technician, "Rear coil springs are vital components of your vehicle’s suspension system. They bear the weight of the rear of the car and ensure stability while driving." If you neglect to swap out old springs, you risk uneven tire wear and a diminished driving experience.

Essential Tools and Materials for the Replacement

Tommy Lee, a seasoned mechanic specializing in BMW repairs, advises, "Before diving into the replacement, gather all necessary tools. You will need a jack, jack stands, a socket set, and a spring compressor. Having everything at hand will save you time and hassle."

Necessary Parts

Alongside tools, securing the correct parts is crucial. According to Jennifer Smith, an automotive parts expert, utilizing OEM (Original Equipment Manufacturer) coil springs is advisable. "While they might come at a premium, they guarantee the retention of ride quality and safety for your BMW E90," she recommends.

Comprehensive Guide to Replacing Rear Coil Springs

Let’s outline the steps to facilitate the replacement of your rear coil springs.

1. Prioritize Safety

Start by ensuring your vehicle is parked on level ground. Apply the parking brake and don appropriate safety gear.

2. Elevate the Vehicle

Use a jack to lift the back of your BMW E90 and stabilize it with jack stands. This is a crucial safety step when working underneath your car.

3. Detach the Wheels

With the vehicle raised, utilize a socket set to remove the lug nuts and take off the rear wheels.

4. Disconnect the Shock Absorbers

Next, disconnect the shock absorbers connected to the lower control arm. This will make it easier to access the coil springs. Be sure to hold onto the shock while loosening to prevent sudden retraction.

5. Take Out the Old Coil Springs

Employing a spring compressor is critical at this point. Attach the compressor to the coil springs and tighten it before completely removing the springs from their mounts. Handle compressed springs with care, as they pose a safety risk.

6. Install the New Coil Springs

Position the new coil springs correctly and gently release the spring compressor. It's vital to ensure they fit properly to avoid future complications.

7. Reattach the Shock Absorbers

Once the new coil springs are installed, reconnect the shock absorbers, ensuring all components are securely tightened according to the manufacturer's specifications.

8. Reinstall the Wheels

Place the wheels back onto the vehicle and securely tighten the lug nuts. This step is essential for the stability of the wheel assembly.

9. Lower the Vehicle

Carefully lower the vehicle back to the ground and recheck all connections and fittings.

Concluding Thoughts

Replacing the rear coil springs on your BMW E90 can significantly enhance your driving experience. Regular maintenance and prompt replacements are crucial for maintaining your vehicle’s performance. John Green, an automotive safety expert, advises, "Ignoring worn springs could lead to more serious issues later on."

With this detailed guide, you are now empowered to tackle the replacement confidently. Remember, if you have any doubts about the process, seeking help from a qualified mechanic is always recommended.

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