[aps]

Question for some of you suspension gurus, but I'll first start by teeing up my setup...

I'm on Bilstein B14 coilovers since 7/2016, mildly lowered about 1" and professionally installed at a local BMW indy shop. Alignment a few weeks went smoothly. About 30k on the car when the coils were installed. Didn't have any issues for the first 4-5 months.

So the problem:
In December, I started noticing a slight knocking noise when I was turning the steering wheel full lock at low speeds. It was only coming from the driver side. It was especially noticeable when I was backing out of a parking space (again steering wheel at full lock) or going over bumps at low speeds (less noticeable when steering wheel was straight).

My first suspicion was maybe the strut mount had gone bad since I had the shop re-use the OEM mounts. At 30k I didn't think the mounts would need replacing for at least another 40-50k. Couple weeks ago, I had the shop that did the coil install look at it and they gave me the diagnosis that the "strut mounts are bad" but I didn't get any specifics. I decided to hold off on replacing immediately as I wanted to do some research into aftermarket solutions.

In the meantime, a few days ago, I filled my tire pressure (temps dropping here) back to the PSI I normally use. Immediately after I pulled out of the gas station, I noticed my knocking noise was gone. Wtf??? Placebo? Coincidence? Wasn't sure so I took a bunch of turns and paid special attention to it over the next few days. The noise hasn't returned and the only thing I have done is inflate the TP.

I can't imagine the TP would have an effect on the strut mounts. Could the knocking be coming from somewhere else? Tie rods maybe?

I don't get it...any ideas?

[aps]

Nobody?

[M-terkait]

http://www.2addicts.com/forums/showthread.php?t=1330168

[aps]

^interesting...somehow that didn't come across my searching. seems like it could potentially be what I'm experiencing

[M47]

I don't have any knowledge on suspension. But how do you like the B14s so far? I just purchased one and am still waiting for the install.

[aps]

Originally Posted by M47

I don't have any knowledge on suspension. But how do you like the B14s so far? I just purchased one and am still waiting for the install.

Love the way they perform, handling and comfort wise. Really tightened up the drive over the M Sport suspension, but also improved the comfort factor by not being as "crashy" over joints and bumps like the M sport suspension was.

Sounds like this particular issue may not even be related to the coilovers so I wouldn't be worried if I were you. I've really enjoyed them.

[saaltonen]

Originally Posted by anshu

Question for some of you suspension gurus, but I'll first start by teeing up my setup...

I'm on Bilstein B14 coilovers since 7/2016, mildly lowered about 1" and professionally installed at a local BMW indy shop. Alignment a few weeks went smoothly. About 30k on the car when the coils were installed. Didn't have any issues for the first 4-5 months.

So the problem:
In December, I started noticing a slight knocking noise when I was turning the steering wheel full lock at low speeds. It was only coming from the driver side. It was especially noticeable when I was backing out of a parking space (again steering wheel at full lock) or going over bumps at low speeds (less noticeable when steering wheel was straight).

My first suspicion was maybe the strut mount had gone bad since I had the shop re-use the OEM mounts. At 30k I didn't think the mounts would need replacing for at least another 40-50k. Couple weeks ago, I had the shop that did the coil install look at it and they gave me the diagnosis that the "strut mounts are bad" but I didn't get any specifics. I decided to hold off on replacing immediately as I wanted to do some research into aftermarket solutions.

In the meantime, a few days ago, I filled my tire pressure (temps dropping here) back to the PSI I normally use. Immediately after I pulled out of the gas station, I noticed my knocking noise was gone. Wtf??? Placebo? Coincidence? Wasn't sure so I took a bunch of turns and paid special attention to it over the next few days. The noise hasn't returned and the only thing I have done is inflate the TP.

I can't imagine the TP would have an effect on the strut mounts. Could the knocking be coming from somewhere else? Tie rods maybe?

I don't get it...any ideas?

I might have the same issue as you, if I am understanding correctly. I upgraded to KW V2's a while back on my F31 and when I first put them on I had the rebound set to pretty stiff. I believe that due to the lack of give in the suspension it caused my OEM top hats that we reused to fail. Now occasionally when turning to full lock (or close to it) my coils bind up a little and create a tapping noise as they try to turn in the mount against the worn bearings. It doesn't happen with slight turns, and doesn't happen at speed when the suspension is constantly traveling up and down. It mainly just happens when parking or making very low speed turns.

Does this sound like what you are experiencing?

[aps]

Originally Posted by saaltonen

I might have the same issue as you, if I am understanding correctly. I upgraded to KW V2's a while back on my F31 and when I first put them on I had the rebound set to pretty stiff. I believe that due to the lack of give in the suspension it caused my OEM top hats that we reused to fail. Now occasionally when turning to full lock (or close to it) my coils bind up a little and create a tapping noise as they try to turn in the mount against the worn bearings. It doesn't happen with slight turns, and doesn't happen at speed when the suspension is constantly traveling up and down. It mainly just happens when parking or making very low speed turns.

Does this sound like what you are experiencing?

Yeah its basically the same noise I believe, but after doing further investigation, I don't think its coming from the strut mounts.

Based on the link that was provided above, it does sound more like its coming from the lower area of the suspension so the brake thing is a possibility or its some part of the CV joint.

[thatBimmerBloke]

Originally Posted by aps

Yeah its basically the same noise I believe, but after doing further investigation, I don't think its coming from the strut mounts.

Based on the link that was provided above, it does sound more like its coming from the lower area of the suspension so the brake thing is a possibility or its some part of the CV joint.

Did you figure out what the noise was? I've installed KW V1 recently so just being prepared in case something comes up. For now I just notice a slight back and forth rocking on complete stop, probably the progressive springs.

[CloudX]

I'm having the same sound. I didn't re-use the old top hats either. I put new OEM ones one. Seems like a weird sprung noise "slight thud" slow speed when turning and say going over a bump. Or just when turning. Seems like it got worse over the 8 months I had the kit on. Not entirely sure myself, but I'm starting to want to chase it down. B14 setup is amazing for this car.

[Yrad119]

Originally Posted by aps

Question for some of you suspension gurus, but I'll first start by teeing up my setup...

I'm on Bilstein B14 coilovers since 7/2016, mildly lowered about 1" and professionally installed at a local BMW indy shop. Alignment a few weeks went smoothly. About 30k on the car when the coils were installed. Didn't have any issues for the first 4-5 months.

So the problem:
In December, I started noticing a slight knocking noise when I was turning the steering wheel full lock at low speeds. It was only coming from the driver side. It was especially noticeable when I was backing out of a parking space (again steering wheel at full lock) or going over bumps at low speeds (less noticeable when steering wheel was straight).
My first suspicion was maybe the strut mount had gone bad since I had the shop re-use the OEM mounts. At 30k I didn't think the mounts would need replacing for at least another 40-50k. Couple weeks ago, I had the shop that did the coil install look at it and they gave me the diagnosis that the "strut mounts are bad" but I didn't get any specifics. I decided to hold off on replacing immediately as I wanted to do some research into aftermarket solutions.

In the meantime, a few days ago, I filled my tire pressure (temps dropping here) back to the PSI I normally use. Immediately after I pulled out of the gas station, I noticed my knocking noise was gone. Wtf??? Placebo? Coincidence? Wasn't sure so I took a bunch of turns and paid special attention to it over the next few days. The noise hasn't returned and the only thing I have done is inflate the TP.

I can't imagine the TP would have an effect on the strut mounts. Could the knocking be coming from somewhere else? Tie rods maybe?

I don't get it...any ideas?

I have exact same issue, I changed struts mount , sway end link , wearing wheel , CV joint, I mean everything but noise is getting worst and worst.

[Pussiwillow]

I've also been dealing with this for a few months
Honestly I'm going to switch suspension I'm soooo fed up with the sound lol

[Yrad119]

Originally Posted by Pussiwillow

I've also been dealing with this for a few months
Honestly I'm going to switch suspension I'm soooo fed up with the sound lol

https://www.dropbox.com/sh/3aizpw9sx61cpjw/AADKT7XpAGXST9Xgd6bh9llya?dl=0

[Yrad119]

Originally Posted by Pussiwillow

I've also been dealing with this for a few months
Honestly I'm going to switch suspension I'm soooo fed up with the sound lol

https://youtu.be/kly-kgc8r00

This video shows how my car makes noise when I turning steering all the way left or right

[Pussiwillow]

Originally Posted by Yrad119

https://youtu.be/kly-kgc8r00

This video shows how my car makes noise when I turning steering all the way left or right

Bro same!
And it gets annoying when you're going over uneven surface like angling over inclined parking lots, in and out of parking spaces, etc etc
And it's only low low speeds to huh? I never hear it driving at speed, I sometimes here it if I turn onto a rough surface around 15mph or less

[_ObiJon]

Have you all tried Torrington bearings on the lower spring perch? It sounds like the coil is binding up and releasing.