Racer20's deep dive into the strut clunk.

[Jerich0]

Did this mod today... 3 Clicks zero to very little clunk on cobblestone streets, no noticeable steering tightness.

Im thinking perhaps you need very little looseness to avoid steering gear bind, frankly to hear the rattle now I have to turn radio off and really look for it.

Thanks Racer20!

[2000gsr]

This was pretty much the exact same thing that happened to my e92 m3, tightened a bolt underneath the car on the steering rack and clunk was gone!

[ptper]

Just had my tech Luc@Speed&Tech do this for me. Quiet as church mouse so far. Unbelievable. Steering is slightly stiffer as others mentioned, but that's a small price to pay for your sanity. Now, bring on dem road bumps, haha. #tearsofjoy.

[MR RIZK]

Have to say this is one of the best threads on this forum as it has helped so may owners.

Thanks to Racer20 for documenting what didn't work and what the eventual fix was

[wavyyyy]

Going to the dealer tomorrow and will have them try this. My car only has 11k miles on it, ‘19 F87 M2C with pretty much the same exact issue.

Hoping they listen to what I’m saying and also fix it under warranty. I was previously on KW V3, but I’ve since switched to stock suspension and it still makes the noise. Thought it was a trim panel but took that out and still get the noise. This is really really promising though.

[andrei.m4]

Take out that progressive springs and install eibach with 1cm shorter bump stop, you can cut it and you will run the car like oem. I was in your situation one week ago and i am happy now with linear springs from eibach.(that clunk and bouncy ride as in first video)
f82 2015 coupe.

[BzsBimmer]

Originally Posted by 2000gsr

This was pretty much the exact same thing that happened to my e92 m3, tightened a bolt underneath the car on the steering rack and clunk was gone!

I was thinking the same thing, that this was an issue for some on the E9X M3 platform.

Hopefully people don’t go gorilla with this fix and overdo the number of notch turns.

Awesome work to Racer20 and some supporting info from Encanto. I can tell from Racer20’s posts, must’ve been a history major and not an engineer lol.

[wavyyyy]

I have a different type of rattle after doing this but I think the bolt may have been overtightened. Going to loosen it a bit tonight and see if that works.

[Suntech70]

3 clics done on my car and no more noise, really happy. The steering is a little bit harder but the feeling is nice Thanks for this topic and to the guys who helped us with this f***** steering Rack ! lol

[Johto]

Is this low speed clunk that you are referring to this kind of that i have in my video that i took took from my car? This can be fixed only by tightening the steering rack bolt?

Clunk video:

My clunk is coming from front drivers side and can only be heard when driving low speeds and on a rough surface or speed bumps. It can't be heard if road surface is normal or the car is cold. BMW dealer say that sound is coming from steering rack and their fix is to replace the whole steering rack (which is about 4000$ part).

So 95% of the driving this can’t be heard. Would not want to change the whole expensive steering rack.

[BzsBimmer]

^ if BMW/extended warranty is footing the bill, let them. If not, suggest you share this info with them or do this yourself and see if it resolves the issue.

[B Watts]

Going to try this once I get back from the lake. Any idea though what would cause this after installing aftermarket suspension components? It sounds like for most people, the noise starts after messing with the suspension. It certainly did for me.

[F80GTS]

Damn i got noise aswell after installing bilstein clubsports. I have a 16. On low speed bump i get noise im going to have to try this hopefully this works

[9M71]

Thanks Racer and all who contributed. also got the same noise on the driver's side after installing MP HAS. I reinstalled and retorqued that corner to no avail. wish I saw this earlier!

[Rokoz]

Has anybody reported this on the passenger side? I have eibach V2 springs and ground control camber plates. I just went through and checked the torque on the plates. Everything looks good. A friend of mine checked out the sway bar end links, control arms, etc for play and we didn't find anything.

Thinking this may be it

[mattylmbr]

@Racer20 how has this fix held up since you identified and rectified it?

[Racer20]

Originally Posted by mattylmbr

@Racer20 how has this fix held up since you identified and rectified it?

Perfectly. Not a single clunk since I fixed it over a year ago.

[moonluv810]

Originally Posted by Racer20

Perfectly. Not a single clunk since I fixed it over a year ago.

Same here! 3 clicks last year and the clunking hasn't returned!

Thank you Racer!

[mattylmbr]

Originally Posted by Racer20

Perfectly. Not a single clunk since I fixed it over a year ago.

Did this yesterday. Definitely got rid of the 'rattle' I was having, still has a slight 'thud' - but definitely has made the noise factor significantly better.

[Eric SS]

For those of you who have had success with this, does this seem to be something that is only seen on higher mileage cars? I have a 2018 M4 CZP with 25k miles that was just dropped on KW HAS and has some slow speed clunks. I might try this fix if it doesn't seem to be a high mileage issue.

[Encanto]

Originally Posted by Eric SS

For those of you who have had success with this, does this seem to be something that is only seen on higher mileage cars? I have a 2018 M4 CZP with 25k miles that was just dropped on KW HAS and has some slow speed clunks. I might try this fix if it doesn't seem to be a high mileage issue.

No, this is mileage independent. Either the clunk will show up after dropping the car, or with the OEM suspension regardless of mileage.

[moonluv810]

Originally Posted by Eric SS

For those of you who have had success with this, does this seem to be something that is only seen on higher mileage cars? I have a 2018 M4 CZP with 25k miles that was just dropped on KW HAS and has some slow speed clunks. I might try this fix if it doesn't seem to be a high mileage issue.

I installed MP HAS at 8k miles and car started developing this clunking noise at 10k miles. It's been a year and 6k miles after I made the adjustment and it's been clunking free.