[2004PTCruiser]

I would think it might be rust on the brake rotors on the front and dust build up on the rear sence you dont drive the car much to only have 33000 miles on it for a o3 model year you might try looking at the rotors next time you leave it parked for a long period to see if there is rust on the rotors. About the only thing I have found to cure the rears is dump the dust out of the brake drums everytime I rotate the tires My mothers car has done this for years and I just bought a used 04 that does the samething


JMO