If the discs are not rigidly supported by the hubs, perhaps they distort over time?

Newbie & first post. I have had what I thought was warped brakes 4 times, all as described. I found this & have now solved my braking problems. This website won't let me upload the link. So Google "Napa brake judder" & you will find the technical document which helped me resolve my issues.
Hope this helps.

Welcome.

 

Which of the faults was it that your car had & how did you resolve the judder?

 

 

yes - a menu of 100 bullet points doesn't narrow the solution down much.

Bad quality hubs is a known problem on some early cars. No number of new disks or pads will fix that.