ive got 16k on mine now, no chips, but the brakes were squeaking, and they were pretty close to having to be changed anyway, so i brought it in to lexus and told them about my concern with the squeaks and they replaced them all, all 4, with resurfaced rotors, free....

under warranty. ill take some squeaks if they replace them with new pads for free every 14k miles, hahahaha. with how much these cars cost , and with toyotas issues, they should bend over backwards to make their current owners happy. try getting the pads replaced under warranty. cant hurt to ask! (PS i also bought the service writer a case of beer for helping me out, so next time maybe he'll hook it up again!)