As SecaBoy said... I would safely say this was more than likely to be your ABS. The ABS actuator makes quite a bit of noise itself and the noise and vibration can also travel through the brake lines. Since it is located on the right side of the car, this can make it more louder on this side of the car. To give you some education on the subject: HowStuffWorks "How Anti-Lock Brakes Work" Thanks, does the aurion have an ABS light?