So why is the judder only when warm? Surely warped discs would be spotted when cold too? Once warm it is truly terrible. Absolutely undriveable. And why are the pads fine, but the discs showing uneven pad contact after heavy use?

I do know that Mitsubishi/Brembo made revisions for the VI calipers, and then to the VII which again got revised calipers. So they may have been aware of the problem.

Anyway, it's just what I suspect. I never said modern Brembos were bad, I've driven a FRS and they were fine. Brembo own AP anyway, AFAIK.

My Evo is also fine, for day to day driving.

But the thread started due to a discussion about Evo Brembos and if AP's were also prone to judder.

Many people here (Germany) use Porsche 2-piece discs on their Evos, and they are also getting judder.

PF had discs sent back, due to judder, and found no problems with the discs.

I thought about all the options after numerous discussions, and came to the conclusion, that an AP 6-pot setup would be the best way to finally have brakes up to the job. Obviously I may yet experience problems, time will tell.