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Rotors: machine vs. brake vs. leave as is?

55inthe5455inthe54 Posts: 5
edited May 2016 in INFINITI
Hey all,

About to bring my car in to get the rear pads replaced, and although I've Googled this to death, wanted some thoughts from the forum on when to machine vs. replace the rotors (or even leave them as is).

Here's what I've found:

1) leave them as is: ok as long as grooving is minimal, more than minimum thickness is still there, and no vibrations, pulsing, or noise from brakes. Then, make sure to properly bed new pads.

2) machine: ok as long as minimum thickness is still there after machining

3) replace: do this to ensure proper mating b/w pads and rotors

The rotors are expensive at $250 for the pair so I want to ensure it's absolutely necessary at this point - see pics below. The rotors have never been replaced but this is the 2nd time the rear pads have been replaced. First time was at 30k km, car is now at 75k km.

Thank you!





Comments

  • isellhondasisellhondas Issaquah WashingtonPosts: 20,225
    A lot of shops insist on turning rotors. Even when they warn the customer that they could end up with noisy brakes or a shudder they still get people complaining when that happens.

    Actually, your rotors don't look that great from those photos. do you live in the rust belt?

  • thecardoc3thecardoc3 Posts: 5,011
    edited May 2016
    What is often overlooked is the corrosion that occurs inside the cooling fins of the rotor. The rust build-up reduces airflow and prevents the air from picking up heat. Replace them.
  • 55inthe5455inthe54 Posts: 5
    thanks for the replies, all. Live in Toronto, Canada and we've been using lots of road salt the last few years
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