Are PTFE feet quieter on glass than ceramic feet?

Yes, PTFE feet are quieter on glass because they are softer and glide more smoothly, reducing the high-pitched scratching noise that harder ceramic feet produce. Ceramic feet sound like sandpaper on glass in comparison, while PTFE feet only make a soft sliding sound. The trade-off is that PTFE wears faster on glass, so you’ll need to replace them every few months.