A quiet door isn't just a comfort thing. Noise usually means friction, and friction means wear.
Rattle = loose hardware
Every fastener on the tracks, brackets and opener rail should be snug. Vibration works them loose over time.
Squeak = dry hinges
A silicone-based garage-door lubricant on each hinge and roller stem will quiet most squeaks in minutes.
Chatter = worn rollers
Steel builder-grade rollers wear flat and rattle in the tracks. Upgrade to nylon.
Grinding = drive gear or bearing
Metal-on-metal grinding from the opener head usually means the drive gear or motor bearings are failing.
