Hey there...

I just noticed (perhaps because weather is allowing me to lower the windows more, maybe after having replaced to summer wheels...) that on light braking, pretty much when I was going 9mph last time I checked, I hear a pssshhhh sound that stops only as the car gets just about to stop, or I release the gas pedal. At some point I even swore it sounded a bit like a faint whistle...

ideas?

 

sometimes there is a lip that gets worn into the rotor, it can cause a scrape noise check the rotor.

 

Interestingly last night I observed a bit more:
when cold, I don't hear anything. After driving for about 20 minutes, some noise as I near coming to a stop.
Today, I haven't heard anything. Oh well.