[bulletrs]

My dealer installed H&R sports springs for me on my '15 M235i with adaptive suspension. Now the car makes a popping sound on the frontleftside when turning the wheel on standstill or while parking.

My BMW dealer has swapped the complete suspension on the frontleft side but the popping is still there. According to them it is probably the frontleft spring causing the issue, it is definately properly assembled. The frontleft spring also seems to be a little higher in measurement (4mm). Don't know if that could cause it.

What do you guys think could be the problem?

[Amiliaus]

Originally Posted by bulletrs

My dealer installed H&R sports springs for me on my '15 M235i with adaptive suspension. Now the car makes a popping sound on the frontleftside when turning the wheel on standstill or while parking.

My BMW dealer has swapped the complete suspension on the frontleft side but the popping is still there. According to them it is probably the frontleft spring causing the issue, it is definately properly assembled. The frontleft spring also seems to be a little higher in measurement (4mm). Don't know if that could cause it.

What do you guys think could be the problem?

If it were me I would take it to another shop and get a second opinion (that would be driving me nuts). Are they not helping you out any more?!? I found a couple other posts though which could be similar, possibly a bad strut mount. May visually look fine and wont make the noise if not under load.

http://www.2addicts.com/forums/showthread.php?t=1128635

http://www.2addicts.com/forums/showt...ht=strut+mount

YouTube vid of a totally different car with bad strut mounts whether or not it would be a fair comparison I do not know. Good luck. Hopefully you can get it sorted soon.

[bulletrs]

I ordered a seperate spring from H&R to rule out the spring. The complete suspension including strut mount has already been replaced. The BMW dealer has done this, i would sure hope they know what they are doing...

[sbertsch92]

The strut isn't fully tightened. Look at the upper mounting bracket on the side of the car that is making the noise. Hold the nut secure while you tighten the strut down further. I used vice grips and a socket to keep the nut secure while I did the tightening. Problem solved.

[sbertsch92]

I had the same popping sound right after I installed both springs myself. I neglected to fully tighten them and it resulting in popping on both sides while turning at very low speeds and while going over speed bumps.

[bulletrs]

Sbertsch92: do you mean to tighten the nut on top mount in the middle of the mounting bracket? With the torx and nut? Can you make a pic? Thanks! 👍

[bulletrs]

I don't have the issue when going over speed bumps, only when turning at standstill or very low speed. I have checked the nut at the top mount and it is fully tightened. I am clueless.

[bulletrs]

Btw, here is a youtube video of the issue:

https://youtu.be/q76tAcEkHgA