I haven't see riverted brake pads in cars for long time
except in trucks
most car brake pads using binder, bonding the the pad
and the back plate
It could somtimes also due to insufficient brake
fluids.
insufficient brake fluids will cause this sound - how is
it so?
What do you mean by 'how is it so?'
Are you trying to ask if the sound can be caused by insufficient
brake fluid, or are you trying to "test" us if we know why
insufficient brake fluid can caused screeching sounds emitted by
the brakes?