I have a 2003 PT Cruiser.
I noticed 3 distinctive noises; All of them coming from the front weel(s).
While driving, the car makes a boiling-kettle like sound, all the time.
Also while driving, it occasionally makes a taping sound (like tapping shoes). I checked all four tires and none have pebbels or nails/metal stuck to them. I do not know how or why it is making such sound
Finally, while breaking, the front wheels (specially the front left; driver side) makes a horrible loud squeaky sound.
After a long drive, I stopped worrying about the noises. I inspected the tires and noticed that both front wheels (rims) were super hot. I compared the temperature with the ones on the back and they where cold.