Hello all,

I'm hoping that someone could point me in a direction to start looking or maybe have some insight into what could be happening.

Vehicle is a '15 F55S with approximately 152,xxx miles on it. Lowered (not slammed. Front and rear shock on setting 4 for Compression/Rebound) on Bilstein B16 PSS10 Coilovers, NM front and rear sway bar end links, NM 22mm rear sway bar, new factory motor mount with Powerflex inserts, Powerflex lower engine mount bushing with black insert, and other misc power modifications.

The issue that I've been having is that I've been getting weird noises occasionally during light acceleration and pretty heavy vibrations through the chassis and steering wheel from like 30-45 mph and higher. I had originally thought the front wheel hubs were going out so I bought them but have not replaced them yet (weather issue). I had replaced the spark plugs and the issue seemed to go away for a few weeks. I replaced the plugs because I believe that with the fuel tank breather valve having gone out, it caused an issue with the plugs and prematurely burned them out. However, with the issue presenting itself again, I'm now worried that it is in fact the hub(s) and/or possibly an axle issue. If it is an axle issue, does anyone have experience with axles other than factory on the F-Series cars?

Video of the noise and example of vibrations at low speeds:

Thanks in advance for any help/assistance,

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