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Lug torque and warped rotors

Discussion in '1st Gen. Tacomas (1995-2004)' started by cajunboi, Jul 25, 2009.

  1. Jul 25, 2009 at 2:26 PM
    #1
    cajunboi

    cajunboi [OP] Member

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    I have always wondered how important the proper torque on your wheels is to the life and performance of your rotors. Most tire shops will just put an impact wrench on it and let it go. I have been considering purchasing a nice torque wrench for this purpose but wanted opinions on how important it is.
     
  2. Jul 25, 2009 at 2:43 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    The wrong torque can screw your rotors up (Warp), or break lug studs, and even crack a wheel (if lugs are too tight.).
     
  3. Jul 25, 2009 at 3:39 PM
    #3
    humanoid

    humanoid bite me

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    Yup, what Chris said. I've had warped rotors when the gorillas at a tire shop just went to town on the lugs with an impact wrench. BTW, the correct torque is supposed to be 84 ft/lbs.
     
  4. Jul 25, 2009 at 4:05 PM
    #4
    pataco

    pataco Well-Known Member

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    yeap,they also make these.[​IMG]torque sticks.they work well to.
     
  5. Jul 25, 2009 at 4:21 PM
    #5
    David Tarantino

    David Tarantino Well-Known Member

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    thank you for posting that pic of torque sticks that is just what we use
    iam so tired of tire shops doing it the wrong way
    you ALWAYS here about the shops doing it the wrong way you never here
    about the shops that are following the rules or doing it right we spend
    so much time and $$ each year on training its not funny and then try
    to keep the cost down on parts and labor and yet there are shops out there that will get away with this every time OK iam done sorry saw this
    and it got to me :D
     
  6. Jul 25, 2009 at 7:45 PM
    #6
    wildjerseyfirefighter

    wildjerseyfirefighter I sell fishing and fishing accessories

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    i got a nice lightly used snap on torque wrench off ebay for that exact reason:)
     
  7. Aug 6, 2009 at 7:41 AM
    #7
    coma09

    coma09 Senior Member. Hey, what's That supposed to mean?

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    Fanatic method is to:
    Wire brush threads first
    Hand tighten nuts
    Torque to ~25%
    Lower vehicle until tire just touches ground (keep wheel from spinning while torquing)
    Torque to rated value
    While tightening - use criss-cross pattern, not the next nut in the circle.
    Go back after a drive, and re-check

    problem with over tensioning the nut, is to stretch the stud. weakens it, and can snap off while you're driving, or next time you tighten. never grease the threads....oh, ask me how I know.... :( you won't get an accurate torque reading .. ie you'll keep tightening, waiting for the click, and the stud will turn to butter and separate)

    I'm not sold on stud torque and rotor warping being related. The studs go through holes in the rotor. The rotor is sandwiched between the hub and wheel. The portion of the rotor that warps is the area wiped by the pads.

    I'm more concerned with keeping the integrity of the stud's strength. To a lesser extent, ensuring the wheel remains lug centric as the nuts are tightened, so there is uniform pressure on all areas of the wheel where the nuts secure it.



    Hope this helps....
     
  8. May 21, 2011 at 1:05 PM
    #8
    Taco Vender

    Taco Vender Active Member

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    ^ so is the correct torque 84ft/lb?

    I just had my tires rotated today and he torqued them at 60?

    Is that a problem?

    -TV
     
  9. May 21, 2011 at 8:01 PM
    #9
    wildjerseyfirefighter

    wildjerseyfirefighter I sell fishing and fishing accessories

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    stock, for now
    83-84 ft lbs is fine.
     
  10. May 22, 2011 at 4:08 PM
    #10
    MowTaco

    MowTaco Well-Known Member

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    I've always done 80 ft/lbs. I've found it more important with my new wheels relying solely on the lugs to stay centered (the center bore is different so it does nothing to keep the wheel centered on the hub) to do the gradual criss crossing tightening.
     
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