doitmyself,
Those caliper piston shims look like a great solution! (1) Does the contact face feel like a 'slippery, self lubing' material? (2) Are they very good at quieting down rotor squeal?
If I could find thin teflon 'washers' the diameter of my piston caliper, I could avoid the hassle of winding teflon plumbing tape onto my brake pad shim (I only one retained one 'taped' shim behind each pad). The teflon tape method really works, noise is greatly diminished, no eerie annoying squeals.
(3) Does anyone see any downside to this 'dry lubricant' teflon tape method for brake pads? See my chembarreto post, scroll up 4 posts to #5247953.
(4) Does anyone know where BIG, THIN, teflon washers (the diameter of a caliper piston) might be purchased?