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      11-04-2019, 08:53 PM   #1
m0butt
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KW V3 Knock

Anyone else have a knocking sound? I experience it when driving low speed over shitty nyc roads. Itís kinda like a knocking on a door or something and drives me insane.
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      11-04-2019, 10:38 PM   #2
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Loose nut on the front strut top mount is a likely culprit. Did you do the install yourself or have a shop do it? Do you have camber plates too?

Knocking sound is not normal.
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      11-04-2019, 11:15 PM   #3
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Quote:
Originally Posted by m0butt View Post
Anyone else have a knocking sound? I experience it when driving low speed over shitty nyc roads. Itís kinda like a knocking on a door or something and drives me insane.
Very high probability its the top nut backing off on the strut assembly. I always locktite mine, otherwise it will continue to loosen up over time again.
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      11-05-2019, 12:53 AM   #4
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Quote:
Originally Posted by Caduceus View Post
Loose nut on the front strut top mount is a likely culprit. Did you do the install yourself or have a shop do it? Do you have camber plates too?

Knocking sound is not normal.
No camber plates, but looks like you and the guy below are both saying the same thing, will try to tighten everything up tomorrow.

I did have a shop do it.
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      11-05-2019, 03:50 AM   #5
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Itís hard to do CORRECTLY without some specialised tools and KW specifically advise against using an impact driver.

That said, if you hit the top nut with an 18mm impact driver for literally half a second, you will tighten up a loose top without hurting anything. Just donít wail on it and get the shaft spinning.

Half a second...bam... done.
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      11-05-2019, 01:09 PM   #6
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Going to try this tonight and will advise back.

Thanks guys!
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      11-05-2019, 02:37 PM   #7
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The MPS are basically V3s. My rear dampers were replaced under warranty after developing a clunk going over speed bumps.
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      11-05-2019, 02:47 PM   #8
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Quote:
Originally Posted by M Fifty View Post
The MPS are basically V3s. My rear dampers were replaced under warranty after developing a clunk going over speed bumps.
I've had it since they were installed so I don't think it's something that broke.
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      11-05-2019, 03:52 PM   #9
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Top nuts not likely the cause then.

Separately, while it may require some ingenuity to seat the top nuts on the front struts, once there, you only need a torque wrench to finish the job.

Finally: go back to the company that supplied/fitted them and request rectification...
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      11-05-2019, 08:26 PM   #10
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So I went to another shop had him look at it, he couldn't figure it out, going to go back to the original shop Friday morning and really just spend the day with them until we're able to figure out what's causing it.
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      12-11-2019, 03:32 PM   #11
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Check out this post. Fixed my clunking noise >>> https://f80.bimmerpost.com/forums/sh....php?t=1637057
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