New Moto Guzzi Door Mats Available Now
I never take my pads past 1/2 used up. My thinking is the thinner the pads get the more the pistons have to stick out of the caliper body. This exposes the shiney bits of the piston to corrosion.YMMV.
I don't use sintered, only organic. After a set of sintered, you can expect to change your rotors with your pads...