Originally Posted by
Jerseysbest
Mine make noise when I walk on concrete, but I don't here it scrap on anything else like black top and all kinds of flooring.
This is what I've found too. Must be stepping on some concrete sand, or maybe concrete lets your shoes sink in a fraction of millimeter.
Crank Brothers cleats are a little better than SPD, since there's less area of the cleat that extends the full distance from the shoe. I would expect Time cleats to be about the same as CB.
If your cleats grind regularly on hard floors, be very careful you're not scratching the floor up.