Alright here is the deal...when i am driving anywhere between 35mph+ i start to here this wierd sound. The sound is like a metal rasping or like taking to coins and rubbing together. its not real loud but its real distinct....i thought maby rotors for a second. when i slow down it will stop, then like 5 minutes later when driving i will here it and then it will stop. Any clues on what it might be?