Hi Paul
I am no metallurgist but I suspect there is little that we as motorists can do apart from gently breaking them in (no pun intended) then increasing gradually the heat cycle during use.
What Peter Mulberry was talking about is the old school manufacturing method where castings would be left to weather before machining, cylinder blocks and brake disc rotors being examples. Today’s speed up world they are cast in the morning, machined at lunchtime and fitted in the afternoon kind of thing, JIT Manufacturing has a lot to answer for ;-).
Thing is if your new discs do show signs of a warp they can be reground and they will be fine. Simon (SiFab) or Cain (Wolf) would probably know of a good contact for disc grinding. Peter M who is retired arranged for a few sets to be ground for me but these were sold to Cain when he bought my king pin business and stock of spares.
BR
Colin
Melvyn Rutter does on the car brake skims.
