tracked it down
I put the car up on my jack stands and got under it, I spinned the wheels a bit and there is a definita squeak coming from the rear flex disc, quite loud too, at higher speeds it sounds like a tick, so I'm guessing this is it.
Now, these flex discs are not even a year old, should they be making squeaky noises already? my old ones were worn to the bone and didn't make a single sound, is there such a thing as a bad flex disc? I got another one I could use, but for the time being maybe I'll srapy it with a lil WD40 and see what happens, it should stop for a while, no signs of wear on it yet.
1985 190E 2.3L - a constant project.