hi all.. hope someone has some idea... I am hearing a strange sound from the left front side of my 2013IS... best way I can describe it is if someone put a playing card in the spoke of a bicycle. I took the wheel off today.. wheel and tire look fine, no lumps or imperfections. The brakes have about 5k miles on them and look fine. The rotor spins fine and no imperfections. Any ideas would be appreciated thanks.