[PICruiser]

I'm new here and have some problems with my pt, so maybe someone can help.
Its a 2003 touring edition and i almost do not use it. It has 33K miles now. But theres a very loud "chirring" noise on the rear pads. I verified myself and there looks like new, so i clean all the parts with brake cleaner, a little sand paper on the pads and no noise for about 2 months. Then again the same procedure every 2 to 3 months. Is this a common problem with them? is the problem is the oem brake pads quality? I still have the originals brake pads.

The other problem is a noise on the drivers side front wheel. Its like a "shhh--shhh--shhh---shhh", I dont have time to verify it, but I know the disc is ok and the front brake pads are ok too because i change them 5 months ago. But the noise calm down when the system get hotter, its more like on the mornings for about 10 minutes. I know the problem is something that is rotating for the shape of the noise.
Any help?