We had the same problem with a 2007 3.5Q before. Toyota replaced the rotors twice under warranty. Would have gone for runstops however when i checked with Speedlab before, it was a big brake upgrade which required us to upsize from 17" to 18" rims so we did not push through with it anymore. Anyway, napalitan na rin yung Camry with a 2013 3.5. Maybe now they already have the direct replacement rotors.