Guide to 2006-2011 BMW 650i Suspension Strut Mount Replacement
Stop the clunking and restore your BMW's handling by choosing the right front strut mounts.
- Common failure symptoms include clunking noises over bumps and stiff or noisy steering.
- For best results, choose OEM supplier brands like Sachs, Lemförder, or Bilstein to maintain your 650i's original ride quality.
- Always replace strut mounts in pairs and inspect struts and other related components at the same time.
- Verify if your car has Electronic Damper Control (EDC) and purchase the correct compatible mount.
Is Your 650i Making Noise? It Might Be the Strut Mounts
The front suspension on the E63/E64 chassis 650i is complex and subject to wear. The strut mounts, along with control arm bushings, are common failure points. As the rubber in the mount ages, it cracks and compresses, and the bearing can wear out. This leads to a variety of symptoms that degrade your car's performance and comfort.
Symptoms of a Failing Strut Mount
🎬 Watch this video to identify common signs of mount failure.- Clunking or Knocking Noises: The most common sign is a clunking sound from the front suspension, especially when driving over bumps, potholes, or uneven pavement. This is caused by the worn rubber allowing metal-to-metal contact.
- Steering Difficulty: You might notice the steering feels stiff, heavy, or makes a creaking noise when turning at low speeds, like in a parking lot. This points to a worn or seized bearing within the mount.
- Excessive Vibrations: Worn mounts can no longer effectively absorb road vibrations, leading to more harshness felt through the steering wheel and cabin.
- Poor Handling and Alignment: A collapsed mount can alter the suspension geometry, causing the vehicle to feel unstable, pull to one side, or cause uneven tire wear.
Known Issues & Recalls
For the 2006 model year, BMW issued recall NHTSA 06V-187 for front suspension components. This recall concerned nuts on the control arm and tension strut that may not have been tightened correctly, which could affect handling. While not directly for the strut mount itself, it highlights the importance of correct torque and installation for all front suspension components on these vehicles. Always ensure any suspension work is done to manufacturer specifications.
Choosing the Right Aftermarket Strut Mount
When replacing strut mounts on your 650i, you have several options. Not all aftermarket parts are created equal, and for a BMW, the quality of the part directly impacts the driving experience.
| Tier | Brands | Description |
|---|---|---|
| OEM Supplier / Premium | Sachs, Bilstein, Lemförder (CRP) | These brands are often the original equipment manufacturers for BMW. Choosing Sachs or Lemförder will restore the factory ride and handling characteristics. Bilstein B4 mounts are designed as direct OE replacements and are highly regarded for quality. These are the best choice for owners who want to maintain the original feel of their 650i. |
| Quality Aftermarket | KYB, Monroe | KYB and Monroe are well-known aftermarket brands that offer a good balance of quality and value. While they are reliable, the ride feel might be slightly different from the original BMW tuning—perhaps a bit stiffer or softer depending on the specific product line. They are a solid choice for a daily driver where maintaining the exact factory feel is less critical. |
| Economy | URO Parts, DEA, Westar, Vaico | These brands provide a budget-friendly option. While they will function, their longevity and ability to replicate the specific damping and handling characteristics of a BMW may be limited compared to premium brands. They can be a viable option if the budget is the primary concern. |
Pro Tip: Replace in Pairs and Consider Other Parts
It is highly recommended to replace strut mounts in pairs (both front left and right) to ensure even handling and performance. Since replacing the mounts requires disassembling the strut assembly, it is the perfect time to also replace the struts/shocks themselves, as well as the bump stops and dust boots if they are worn. This saves on labor costs down the road.
Frequently Asked Questions (FAQ)
Do I need a special tool to replace my strut mounts?
Yes. The most important special tool is a spring compressor to safely remove the coil spring from the strut. This is a high-tension component and can be extremely dangerous if handled improperly. You will also need a set of metric sockets and wrenches. Due to the safety risks, this job is often best left to experienced DIYers or professional mechanics.
🎬 See a breakdown of strut mount symptoms and replacement costs.My car has Electronic Damper Control (EDC). Does that matter?
Yes, it is very important. Some 650i models were equipped with EDC, which is an adaptive suspension system. You must purchase strut mounts that are compatible with your specific suspension type. Using the wrong mount can cause system errors or prevent proper function. Always verify compatibility before purchasing.
Should I use genuine BMW parts or are aftermarket ones okay?
For this vehicle, high-quality aftermarket parts from OEM suppliers like Sachs or Lemförder offer the same performance as genuine BMW parts, often at a lower cost. Brands like Bilstein are also excellent. Economy brands will work but may not provide the same ride quality or durability that BMW owners expect.
How can I tell if the noise is from the strut mount or a control arm?
It can be difficult to distinguish without a physical inspection. A clunk over bumps is a symptom for both. However, a creaking or binding noise when turning the steering wheel while stationary is a strong indicator of a bad strut mount bearing. Worn control arm bushings often cause a shudder under braking or a feeling of looseness in the steering. A mechanic can pinpoint the source of the noise with the vehicle on a lift.
🎬 Learn how to pinpoint and repair front end clunking noises.Helpful Videos
Technical Specifications
OEM Part Numbers: 31336766774 31306795082 31331094616
The front strut mount for the 2006-2011 BMW 650i is a single unit that includes the mount body with an integrated rubber insulator and a central bearing for steering pivot. It is designed to fit the specific top-hat profile of the E63/E64 chassis. Different part numbers exist for standard suspension versus cars with Electronic Damper Control (EDC).
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- BMW 650i: