NOISES - RPM and Speed related

[Disco Benny]

Hey folks, having noises/issues with my '85 325e

So When going 55+ there is a "Brrrrrrrrr" or Groan that increases with speed. Thinking diff but fluid is OK and I don't have a limited slip (I think, did the "raise rear" test and only one wheel turns...yes one wheel)

NOTE: makes noise at 55+ even when NOT in gear

Also, when accelerating there is a binding/brrrr'ing around 1500rpm in every gear...so I took it to a shop and they raised it in the air and the mechanic said there's a ton going on with the tranny and it's hot as hell. I was under the vehicle so I verified

The front driver's side wheel has a loose tie-rod (i.e. it has a little play at the 3 and 9 position)

thoughts? The mechanic thinks the 55+ humming is related to the tranny as well...

[Disco Benny]

Also, apparently the tranny noise (~1500rpm) is not present when first starting up and driving the vehicle...after warming up or making a few errands the noise is there

[EuroSportChicago]

Make sure all your front end components are solid. That may be your problem.

When is the last time you changed your transmission oil?

[Disco Benny]

Oil just changed...80-90 with lucas...still there

defintely two separate problems

One is speed related - thinking bearing but can't isolate where it's coming from. Fluid in diff checked good

The RPM noise (brrrring/binding) is from either tranny or rear-end ugh but it sounds like its right underneath me...That rubber flex-plate was replaced by the PO, I saw it when I was underneath. The driveshaft has only a slight amount of play in it (u-joints replacement?)

[Disco Benny]

I have the sound recorded

if anyone can help I can send the file to ya