Today while on the way to lake winnipesaukee i noticed a loud scraping noise coming from my right front wheel. The noise was really loud, i heard it over my music. i thought i had a flat and was riding on a rim so i pulled over to check it out. after a short investigation i saw that the noise would come from the wheel whenever it started moving, even if the car was just barely rolling. i was 5 minutes away from my friends house so i decided to bring the car there and then pull the wheel off and check it out. the scraping would get louder the faster i went so i decided to slam my brakes to see if it would help and and the noise went away. it sounded like something was scraping the rotor, does anyone have any idea what it was? the car is an 04 wrx with 12k miles on it.