Which Ones? JE5 or J55?
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  • 2 Post By Sal33n
2008-2013 Cadillac CTS General Discussion Discussion, Which Ones? JE5 or J55? in Cadillac CTS Second Generation Forum - 2008-2013; I went to Advance Auto Parts yesterday to purchase new rotors and brake pads and was told there are two ...
  1. #1
    RRIXX is offline Cadillac Owners Member
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    Which Ones? JE5 or J55?

    I went to Advance Auto Parts yesterday to purchase new rotors and brake pads and was told there are two different types. One is J55 and JE5. I asked how I would find out which one I needed and they told me it should be on a label in my glove box (the RPO codes) but nothing there or on the door posts. Any idea where I can find this information out or where the RPO codes are?

    Thanks

    Rick

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  3. #2
    Sal33n's Avatar
    Sal33n is offline Cadillac Owners Fanatic
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    Re: Which Ones? JE5 or J55?

    Look on the underside of the spare tire lid.
    arw1510 and arw1510 like this.

  4. #3
    99flhr is offline Cadillac Owners Enthusiast
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    Re: Which Ones? JE5 or J55?

    Or measure your rotors 12.5" or 13.5"

  5. #4
    OMG's Avatar
    OMG
    OMG is offline Cadillac Owners Fanatic
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    Re: Which Ones? JE5 or J55?

    If you have 17" wheels you have the JE5. If you have 18's look at you rear rotors. If they almost completly fill your wheels then you have J55's the fronts will be completly full also.

  6. #5
    Tbbt is offline Cadillac Owners Enthusiast
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    Re: Which Ones? JE5 or J55?

    Or just turn over your spare tire cover and read your brake type.

  7. #6
    RRIXX is offline Cadillac Owners Member
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    Re: Which Ones? JE5 or J55?

    Quote Originally Posted by Sal33n View Post
    Look on the underside of the spare tire lid.
    That's exactly where it was, thank you. Turns out I use the JE5. Thanks for all your answers.

  8. #7
    RRIXX is offline Cadillac Owners Member
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    Re: Which Ones? JE5 or J55?

    Unfortunately the RPO code led me astray. It said "JE5" but they were too small. I called my dealer and he looked up my VIN number and told me they take J55 brakes. Go figure.

  9. #8
    arw1510 is offline Cadillac Owners Enthusiast
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    That is very very strange. Does the vin on your rpo sticker match the cars?

  10. #9
    99flhr is offline Cadillac Owners Enthusiast
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    Re: Which Ones? JE5 or J55?

    Quote Originally Posted by arw1510 View Post
    That is very very strange. Does the vin on your rpo sticker match the cars?

    Tape measures never lie.

  11. #10
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    OMG
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    Re: Which Ones? JE5 or J55?

    Another way is look at your front fog lights if it has the intake duct for brake cooling you have J55

  12. #11
    arw1510 is offline Cadillac Owners Enthusiast
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    Quote Originally Posted by OMG
    Another way is look at your front fog lights if it has the intake duct for brake cooling you have J55
    I'm not so sure that this method is consistent. On my car, I have the fog lights, and the j55. But the duct is blocked off both in the wheel well and by the fog lights

  13. #12
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    OMG
    OMG is offline Cadillac Owners Fanatic
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    Re: Which Ones? JE5 or J55?

    Quote Originally Posted by arw1510 View Post
    I'm not so sure that this method is consistent. On my car, I have the fog lights, and the j55. But the duct is blocked off both in the wheel well and by the fog lights
    Thanks for the clarification. Very strange.

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