ORIGINAL: richthomas
Mine does this too, and the only way to describe the sound is exactly like George did, running your finger round the rim of a glass. I put it down to lifting caliper plates making to pad just rub the disc, but could be fluid related. I get all the same symptoms as George, and it only occurs when turning right. If i touch the brake while doing it, it stops, so that is what lead me to think it is caliper related. Normally happens as I turn on to my drive, or into my road, both right handers.