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Strange sound from wheel/suspension

At a recent track day I started hearing the sound below from the front suspension. I noticed it under braking and turning and was able to reproduce it occasionally going over speedbumps, as the video below shows. It sounds like a twang, like something you would hear from a spring, but who knows. Any thoughts on what it could be?

I went over and checked all the major suspension parts for loose bolts and found nothing. Most of the suspension arms and coil overs are mountain pass and are just a few months old on the car.

Do you think it could be a cracked wheel? The only thing I can think of is that I hit a rather large bump on the way to track. I've inspected the wheels repeatedly and didn't see any damage.

Anyway, any thoughts would be greatly appreciated.

 

tm1v2

Active Member
Oct 18, 2021
2,422
2,116
USA
Last huge dip I hit (bottomed out the front really hard), followed by driving very fast over many more miles of very nasty torn up pavement, led to a swaybar endlink coming just slightly loose. Not enough to tell visually or by hand, but it would shift under load and I'd get a real loud clunk.

I have also cracked a big Tesla performance model (P85) rim from driving on a bumpy road (245/35 is not enough sidewall for the real world), but the immediate symptom there was just a slow pressure leak. I don't think that sound of yours is from a cracked rim.
 

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