So, I wanted to bump this thread to give an update.
A few weeks ago, I replaced the rear rotors, which took a lot longer than I had hoped, but no matter, they got done. I was about to do the fronts, but I did not have at the time the correct size Torx bolt for the front (the E20). And then I find out that it's technically a one-time use bolt, so just last week I ordered four new bolts for the front. This past weekend, I finally got around to replacing the fronts, which went very smooth. Was done in a little over an hour.
So that squeak I was talking about? Well, upon first impressions, the noise was gone, which made me quite happy. Now, fast forward two days later, and it's back again, and I am at a loss of words of what I can do to alleviate the noise, because that is ****ing annoying. And inerestingly enough, it appears to get louder when the brakes are getting warmer.
Now, perhaps this is all part of that break-in period, but I don't ever recall brakes having squeak noises (not even under braking mind you. even coasting at lower speeds) when breaking them in.
I suppose another possible explanation is the caliper itself, maybe because it's resting up against the back of the pads. I made sure to grease up the back of the pads (both front and rear), as well as grease up the slots the pads sit in, but this is still occurring.
I had considered the possibility it was the rear transaxle, but the noise was gone completely, and now it's back, so I'm almost positive that's not the issue.
I suspect it might actually be the caliper itself, but I have no way of knowing for sure, and I'm not about to pony up and get new calipers in the hope that it fixes it. As I've said before, it's probably something simple going on. Still, aggravating to say the least.
On the bright side, I have new brakes and rotors, so I have that going for me which is nice.