I have a constant "ticking" sound when driving at any speed. I can't really tell if its from the back or front. The slightest pressure on the brake pedal stops it, and as soon as i release the pedal, the sound is back. Ive checked the pad and shims, replaced caliper slide pins, and cleaned and applied copper compound to the back of the pads and between the pads and shims, checked shocks etc, but the ticking still there.
Anyone else experienced this?