ok, i drove it around for 10 miles today with everything off. the noise is the loudest at 30 mph. but when i hit the the brake the noise changes slightly. kinda quiets it a bit, but not much. but it slows down with the speed of the car. so i don't thinks it's a anti-rattle spring or clip. but iam no expert.and at 30 mph, its about two to three thumps per second. thanks for all the help. it almost sounds like something is in the tire, but nothing is there