Squealing from wheel(s) - any suggestions? Video attached

[bp1000]

https://www.youtube.com/shorts/NGgvfHNfVR0

Tried taking this in a few times, classic case of can’t hear it once you get there.

What you hear in the video is pretty much present all the time.

No idea what’s going on. I have had a brake clean in the past.

Squealing from rear left I think. Doesn’t go or change when applying the brakes. Frequency increases with wheel speed.

Tried burnishing the brakes and parking brake.

Any ideas?

Edit
Car is Tesla model s

[GreenV8S]

Is the problem that they can't hear it or you can't hear it when you get it there? Having somebody sit in the car while you reproduce the problem can save a lot of time. If you're struggling to reproduce it, it may be associated with the temperature (drive train is cold when setting out from home) or the fact you seem to be driving up a significant slope. Try to reproduce it somewhere that you can take a mechanic when you show them the problem.

[bp1000]

I think the main issue is the high pitch squeal is hard to hear when it’s noisy which it is at the garage when I took it in.

I haven’t found one specific thing that causes it really. It’s sort of always there and heard at low speeds.

Only thing is, the garage is 1 hour away and I’m not sure if having the car warm changes things, as in lessens the issue. This isn’t a definitive comment; just a possibility.