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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > PSS9 / PSS10 knocking noise



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      11-03-2015, 05:30 PM   #1
spxxx
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PSS9 / PSS10 knocking noise

Anyone else have this spring bind noise/knock noise from the front end with PSS9 or PSS10 Coilovers?

I have this noise and I'm thinking that it might be the thrust sheets... Performance seems to be fine as I've tracked them twice and they feel fine.

Anyone have any thoughts or opinions on this?
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      11-03-2015, 06:30 PM   #2
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did you check the top nuts?

sometimes, during installation, the strut mount doesn't settle all the way down to the stop on the strut shaft, and after a few days, the shaft rides up inside the mount to where it's supposed to be. Then you get a little slack because the top nut is now loose and it knocks over bumps.
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      11-03-2015, 06:47 PM   #3
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Quote:
Originally Posted by mike-y
did you check the top nuts?

sometimes, during installation, the strut mount doesn't settle all the way down to the stop on the strut shaft, and after a few days, the shaft rides up inside the mount to where it's supposed to be. Then you get a little slack because the top nut is now loose and it knocks over bumps.
Yeah 99% sure that's not the issue as I took them off to double check the washers (bearing covers in the top hats) and ensure they were right side up as that's one cause of knocking noises up front.

Noise only occurs at speeds under 5mph
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