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Thread: centre bore size........

  1. #1
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    centre bore size........

    hi there,
    i am buying some hub centrics and have been told the centre bore 73mm, is that correct.
    any help is good help.......
    thanks guys

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    Wheels or hubs? Hubs are 66.1mm, a lot of aftermarket wheels are 73mm.

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    arrrr, well these hub centrics are 73mm bore. so i guess they will fit over my hub and my wheel will fit on to the "hub centric"

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    Quote Originally Posted by s13brad View Post
    arrrr, well these hub centrics are 73mm bore. so i guess they will fit over my hub and my wheel will fit on to the "hub centric"
    With a 3.45mm radial gap they are no longer "hub centric" but wobbler's. You will need spigot rings to fill the gap.

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    Quote Originally Posted by skyshack View Post
    With a 3.45mm radial gap they are no longer "hub centric" but wobbler's. You will need spigot rings to fill the gap.
    That will only happen if you put a 73mm center bore wheel on the stock hub,but the same wheel on the hub-centric will be perfect

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    A 73mm bore won't fit a 66.1mm spigot.

    The hub centric needs a 66.1mm bore and 73mm spigot.

  7. #7
    Guest ANDY black s13's Avatar
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    Quote Originally Posted by skyshack View Post
    A 73mm bore won't fit a 66.1mm spigot.

    The hub centric needs a 66.1mm bore and 73mm spigot.
    Yep your right I was sitting here with pair of bolt-ons and didn't think about the size of the hub
    tbh i find they center them selves if nuts are done up gradually evenly/cross pattern and not had problems with balancing/vibrations,
    I know your now reading that with a look of complete disgust as its not the done thing

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    Without the spigot it will go on fine, but the problem is wheel studs aren't there to take the weight of the car, that's why they have hubs that match the centre bore of the wheels. The studs are just the to hold the wheel onto the hub, while the hub takes the weight. I've known people run without spigots and it be fine, but I've also known people to have studs shear because of it...

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    took it all in guys...... nice one. well after measuring them it turns out the rear measurement of the hub centric ( spacer ) is 66.1 ish..... And the spigot is 73mm ish maybe a tad bit less. And I do mean a bit. but they all fit perfect, proper snug as.....
    Thanks guys for all the information

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