These springs were installed onto my 2012 mazda 3 sedan without any problems. They were a great fit and lowered my car about two inches after they finally set. There is no rattling or rubbing noises and the ride quality is still comfortable.
Ok so it's been about a month and my Mazda 3 is exactly 1.75 inches in the front and the back. It looks so much better lowered and still rides smoothly but of course is a but stiffer going over bumps and potholes.