Understood, but if you did install the M3 bushings the noise would be significantly worse like what we have. I think the cause is the same but it's transmitted more loudly via the stiffer M3 subframe bushes.
I would be interested to know if you can modulate the sound at will like I describe. It sounds from you description that you can.
Quote:
Originally Posted by jyeah
That's an interesting point, but I doubt it's the bushings
since I heard this noise before I upgraded to the BMW OEM performance suspension.
I installed PPK2 and PE at the same time, then I installed the Performance Suspension 2 weeks later.
Also, my friend mentioned hearing the drone without me asking if the sound was noticeable.
I do know that when I pay attention to it, I can hear it more audibly, but also when I don't pay attention to it, I can still notice it.
|