How to Break in New Rotors


When a new set of brake pads and rotors is installed, the brake components must be properly broken in, a process that the brake manufacturers refer to as "bedding in pads" and "seasoning rotors." This is an important part of brake replacement because it ensures that the rotors and pads will be able to endure the intense heat that they are subject to over the long term.

Things You'll Need

  • Car with new rotors
  • Drive the car for five or six days after the new rotors are installed. Drive gently and avoid aggressive stops, which will send too much heat into the rotors.

  • Find a place where you can perform several stops from a high speed. Drive the vehicle at 60 mph and then apply the brakes at about 50 percent of their stopping force until the car slows to 15 mph. Do not bring the vehicle to a complete stop. Repeat four times.

  • Drive the car for 10 minutes on the freeway to cool the brakes. Stop driving the car and allow the brakes to cool over night.

  • Perform four more stops at 50 percent stopping ability and then cool the brakes for five minutes on the freeway. Do four stops at 75 percent stopping ability, and then let the brakes cool on the freeway. Finally, do six hard stops from 60 to 15 mph, then allow the brakes to cool on the freeway. Allow the brakes to cool overnight.

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