They are really very quiet. When I stop slowly but completely, they don't twitch or vibrate at all. You know that little "deep squeak" you get from organic pads? Yes, none of that. Installed on a 1990 Chevrolet G20 5.7L Conversion Mark III Van. Low dust pollution now also on the front wheels. well, if there is dust, it is off-white, not black. I recommend. Much less $$ than local auto parts stores.