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broken front wheel stud

Discussion in 'Model S' started by mckemie, Oct 15, 2016.

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  1. mckemie

    mckemie Member

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    Well, the title says it. Now, with a four month stack up at my service center, I seek a non-Tesla solution. Does anyone know if the front studs (not D) are a Mercedes item? If so, which Mercedes?
     
  2. artsci

    artsci Sponsor

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    You don't need a SC to fix this. Replacing a wheel stud is a piece of cake for any competent shop.
     
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  3. FlatSix911

    FlatSix911 918 Hybrid

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  4. Russell

    Russell Supporting Member

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    What did you end up doing to fix this? Warranty or not?

    I just got a broken stud on a rear side. As I was torquing it to 129 ft-lbs the force started to drop then the lug nut began to tilt.
    This didn't seem right so I attempted to back it out then the stud broke.
    I can see rust where the stud broke.
     
  5. mckemie

    mckemie Member

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    It turns out, the stud was ok. I thought I was going to have to ruin it to get a buggered nut off. I bought a buggered nut removal tool which worked. As I recall, I also bought a used hub with the intention of taking a stud out of it. Do you want me to see if I can find that hub?

    BTW, the early Ss had REALLY crappy soft lug nuts. I think they could be used four or five times before the corners rounded off. For a while, I carried that nut removal tool and some spare nuts. Tesla eventually replaced the crappy nuts with good ones.
     
  6. Russell

    Russell Supporting Member

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    You don't have to look for the hub just yet. I took the wheel off and inspected the remaining studs and 2 of them feel like the threads are not smooth anymore. I need to figure out if I'm going to replace those studs or the whole hub. Thanks for offering.
     
  7. mckemie

    mckemie Member

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    I am reminded that tire shops tend to over torque lug nuts. I think that, in combination with crappy lug nuts, was the source of the above described problems. Probably, the broken stud(s) also. Several times I've found myself doing a roadside wheel change and barely able to take the lug nuts off. Best to carry a heavy lug wrench. I've found the "gorilla" wrenches with extensible handles to be pretty good. It is also best to not get away from a tire shop until you are sure that whatever lug wrench you are carrying is capable of loosening the lugs.

    I believe tire shops tend to over torque because of liability problems with under torqued nuts that have resulted in wheels coming off while under way.
     

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