I have the car on stands, front wheels off.

The shafts are rock solid side-side and up-down. There is a tiny amount of axial movement but this should be normal. Here's a video of me trying to move them side-side, then up-down, then axially.

Driver's side video

Passenger's side video

I think the CV's are fine - they make no noise when turning or otherwise.

I'm now checking the bearings. I have the rotors and caliper mounts off, and I'm wiggling the bearing flange trying to get movement. I get nothing - it's rock solid. I've only check the driver's side, I will check the passenger soon.

I'm pretty confident I've ruled out CV's. The ones I have are rock solid - I can't get ANY side-side/up-down movement as much as I try and yank on them.

I'm pretty close to ruling out bearings (one seems fine to me).

I also looked at the driver's side trans-mount, it seems fine (pic is here)

Any ideas? This is VERY frustrating...

I'm back top thinking this is just due to balding tires...