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2008 S60 2.5T
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Discussion Starter · #1 ·
Brembo rotors are excellent but expensive. An excellent and much less expensive alternative is Raybestos Professional (available at RockAuto).

Rotors should always be replaced when pads are replaced. Turning rotors is difficult to do properly, and the removal of material reduces their ability to dissipate heat and thus stopping power.

(Rotors do not "warp", a common misconception. What happens is uneven wear, usually caused by improper installation or improper turning. Proper rotor installation is critical.)

Akebono Euro ceramic pads are excellent, highly recommended.
 

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Brembo rotors are excellent but expensive. An excellent and much less expensive alternative is Raybestos Professional (available at RockAuto).

Rotors should always be replaced when pads are replaced. Turning rotors is difficult to do properly, and the removal of material reduces their ability to dissipate heat and thus stopping power.

(Rotors do not "warp", a common misconception. What happens is uneven wear, usually caused by improper installation or improper turning. Proper rotor installation is critical.)

Akebono Euro ceramic pads are excellent, highly recommended.
"Uneven wear" is actually most often caused by improper bedding.
 

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2008 S60 2.5T
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78 Posts
Discussion Starter · #3 · (Edited)
"Uneven wear" is actually most often caused by improper bedding.
With respect, that's an urban legend.
Uneven wear is actually most often caused by improper rotor installation (excessive runout).
Burnishing (not "bedding") simply prepares friction surfaces for service.

References:
Brake rotors do not warp from heat, even when driven by the most aggressive traffic officer. Instead, they wear unevenly. This uneven wear is caused by the brake pads themselves as they intermittently touch an out-of-true rotor. The root cause of the uneven wear is one of two things: either the rotor was installed out-of-true with the hub, or the tire was improperly torqued to the hub during the last tire change.
Subject: Brake Pad Burnishing
Vehicle Involved: All Normal "Street" vehicles
Condition: After replacing brake pads

Repair Procedure: When replacing brake pads, a "break-in" or "burnishing" procedure is recommended to properly condition both the brake pads and brake rotors for best service and long life.

The burnish process, if done correctly, does at least three things to the pads and/or the rotor:

  1. Physically and thermally converts the composition of the pad and/or rotor surfaces.
  2. Smoothes the asperities (roughness, unevenness) of the mating surfaces.
  3. Heat cycles the entire pad structure.
For "normal" street service 8 to 10 moderate applications from 40-10 mph is sufficient. Then allow the brakes to cool for at least 15 minutes either by parking the vehicle or continuing to drive at moderate speeds with minimal brake applications.
 
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