In this Motor Age Tech Tip Short, Erik Screeden, technical multimedia content director with Motor Age, teams up with AutoZone to tackle a common customer complaint: brake pedal pulsation. While many assume warped rotors are to blame, Screeden explains that the real culprit is often disc thickness variation (DTV). He dives into how uneven brake rotor wear — often caused by rotor runout, improper torque on lug nuts, or corrosion under the rotor hat — leads to that pulsation you feel in the pedal.
The video also covers friction layer buildup and how caliper issues can cause high and low spots on the rotor surface. Screeden shares actionable brake service best practices, like using a torque wrench in sequence, cleaning hub flanges, and checking rotor runout with a dial indicator.
Whether you're a seasoned tech or just brushing up, this video is packed with tips on how to prevent brake pulsation. Watch the full video now for expert advice and insights. For more information, visit autozonepro.com/brakes.
About the Author
Erik Screeden
Technical and Multimedia Content Director
Erik Screeden is the Technical and Multimedia Content Director for the Vehicle Repair Group. He has been in the automotive industry for over 24 years. During that time, Screeden was a technician. He started out at a Ford dealership and continued to several independent repair facilities as well as spent time in the specialty aftermarket where he had the opportunity to work at a GM-specific performance shop. After his time as a technician came to an end, Screeden transitioned into a role providing scan diagnostic and J2534 tool support. He was then able to parlay his experience as a technician and a support specialist and use that in several technical sales roles.