New Rotors?

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by Camaromurph, Nov 30, 2019.

  1. Camaromurph

    Camaromurph Veteran Member

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    Another question. The new rotors came with bearing races installed. I also bought new bearings that came with races. Do I need to remove the races in the new hubs and replace with the ones that came with the bearings?
     
  2. Camaromurph

    Camaromurph Veteran Member

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    Should have read my own thread.

    COPO - see you did this in your original reply.
     
  3. COPO

    COPO Veteran Member Lifetime Gold Member

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    Keep the races in the rotors. Now you have spares in the box as I do.
     
  4. badazz81z28

    badazz81z28 Veteran Member

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    I personally like to keep sets together especially if your using a higher quality bearing. I would swap the races out. You’ll never need a spare set of races.
     
    jthomas likes this.
  5. Skip Fix

    Skip Fix Veteran Member

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    "personally like to keep sets together especially if your using a higher quality bearing. I would swap the races out. You’ll never need a spare set of races." Especially since most rotors are Chinese now.
     
  6. COPO

    COPO Veteran Member Lifetime Gold Member

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    Last edited: Dec 27, 2019
  7. mallard

    mallard Veteran Member

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    Agreed. I’ve been out of the MVMR trade nearly 40 years and even back then we also gave all new rotors & drums a very small cut. Otherwise you might get a small pulsation.
     
  8. roeville

    roeville Veteran Member

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    Having worked many years in specialty gear shops and bearing WD’s, I can tell you that we sold many bearing cones with or without the races, and also as sets. Bearing cones were always available individually because some part numbers can match with more than one race (different O.D.). Never had a customer complain about cones not mating with cups unless the part number was wrong.
     
  9. COPO

    COPO Veteran Member Lifetime Gold Member

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    I’ve bought new hub/rotors for the Camaro and Grand Nat’l and never ever had an out of round rotor or vibration out of the box. I bought an AC Delco hub/rotor from GM Parts back in 2002 and had no problems.
     
  10. biker

    biker Veteran Member

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    Even in the early 80's, new drums and rotors were out just a small bit. Not noticeable most times on the car, but definitely could see them out a few thou on the brake lathe. Sometimes way more. Service manager at a dealership where I did a work placement would always true up new ones if they were going on a picky customers car.
     

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