Squeaking sound

I have a 2004 lancer ES, and its making a Squeaking sound. At first I thought it was the breaks, or the tire rubing on something. so i go and i change the breaks, the rims(cause i need new ones anyway), and cheak the belt. But it still squeaks!!!!!
it only squeaks now when im driving slow(0-30mph)
plz i need help, why is my car Squeaking????