I noticed this last summer. When driving with the passenger side window down I can hear a faint "chirp chirp chirp chirp". If another car is near I can't hear it. If my radio is on, even at low volume, I can't hear it. Seems to not be brake related, as it continues with brakes applied. It stops when I'm stopped. Starts at about 10mph (that's when I hear it). I just heard it again today as it was nice enough to roll my windows down and I thought "oh, forgot about that noise." Because with the windows up, or over about 35mph, you can't hear it. I've had a bad bearing in a different vehicle years ago, and bad cv joints in other cars, but that was always a lower hum or growling noise. Do bearings make super subtle, faint chirps? Or is it probably just something stupid rubbing on something? Ideas appreciated. Thanks!
Edit: it's a 17 Corolla with about 88k on it.
Edit: it's a 17 Corolla with about 88k on it.