Replaced the front pads (Bendix), they had 3mm remaining with even wear.
As per normal with these, and the discs were replaced along with the pads last ( TRW discs, not Wanjitown Siming Mountain "OEM" spec) the outboard swept area of the disc was pristine, and the inboard side had a 3/8" ring of crust at the outer diameter of the disc.
The discs were removed, a chipping hammer used to knock of the crust, after which they were lightly machined to attain a decent surface, and refitted to the car, the runout checked, and finally built back up.
Annoyingly, I had bought two sets of Bendix pads when I bought the discs four years back, and when I opened up the box containing the new pads, I found that they contained a different brand
The original Bendix pads had an antisqueal coating on the back side, whereas the new ones did not .
Time will tell, I'll bed them in tomorrow and see how they perform........ho hum.
Brian