[BAMFM3]

Searched for quite a while and didn't find anything so here it goes:

2013 E92 M3 w/36k miles:
- Haven't driven the car in 5 months because I was overseas for work, friend took it out once a month for a drive to keep things running.

- Didn't notice any issues upon returning and driving the car

- Got new wheels installed (Apex EC-7 9.5/10.5 ET22 with PS4 255/275). Replaced old wheels with exact same width/offset.

- Recently noticed, under WOT an intermittent buzzing/vibration noise coming from under car (maybe diff?), seems to correspond to traction control light but not always

- However, sometimes no noise present when WOT

- Can replicate problem with ease, generally in 1st or 2nd gear

- Never noticed this noise before or any of my other three E92 M3s. If it is just the traction control or diff working....I definitely don't remember it being this loud.

- RKP catless x-pipe installed before work trip but doesn't sound like exhaust noise. At least it doesn’t sound like a “rattle” anyways

- Unsure if noise appearing is coincidental to wheel install/exhaust install

Thoughts? And thank you in advance!