Product review (4 stars): They definitely cut down on the vibrations during the high speed spin on a ceramic tile floor.
My laundry room has ceramic tile and the feet of my washing machine had the padded coatings wearing off.  If I had it to do all over again, I might just buy new padded feet for the washing machine, or possibly use these pads with those feet.  The pads definitely dramatically reduced the vibration of the worn feet against the ceramic tile floor.  I only gave 4 stars b/c they aren't perfect and they cost too much for what they are.