This has been going on for a while now but im just nervous because I dont know what it could be. Once I hit about 60 mph I hear this weird squeaking/high friction sound. Sorry I can not explain the sound any better than that. But I have no idea what this sound can be. I have a 2007 regular cab 4x4 with 30,000 miles on it. Has anyone had this problem before or know what it could be.