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GM bolt pattern question / OLDS / BUICK / are they the same?

Discussion in 'The Hokey Ass Message Board' started by Tuck, Sep 2, 2003.

  1. Tuck
    Joined: May 14, 2001
    Posts: 5,645

    Tuck
    Tech Editor
    from MINNESOTA
    1. Early Hemi Tech

    wondering if reg. standard 5on 5 gm b/c is the same for olds, chev, and buick?

    so the 57olds rear I have is standard 5?
    the buick drums the same as well...
    anyone know...

    Tuck
     
  2. Tuck, yes the GM full size pattern is all 5 on 5. However, there is one small exception: That is the Buick wheels have a larger center hole diameter. Not sure why, but may have to do with the fact that Buick also used lug bolts for quite a while until finally changing over to lug nuts. The Buick wheels will fit Olds, Cad, Chevy, etc, but the Olds, Cad, Chevy will not fit Buicks without a spacer.
     
  3. Fraz
    Joined: Mar 3, 2001
    Posts: 1,818

    Fraz
    Member
    from Dixon, MO

    Buick had oversized front hubs due to their "lets hang on to obsolete shit" train of thought. They used ball bearings in the front hubs till 61, which made the outer diameter of the hub huge. That's why the larger center hole.

    That's my opinion on it anyway. Makes sense.
     
  4. Tuck
    Joined: May 14, 2001
    Posts: 5,645

    Tuck
    Tech Editor
    from MINNESOTA
    1. Early Hemi Tech

    thanks guys, trying to put together a set of wheels for the A, makeing sure it'll all work!

    Tuck
     

  5. atch
    Joined: Sep 3, 2002
    Posts: 4,583

    atch
    Member

  6. Fraz, it went past 61, as my old 64 Riviera had the large diam center hole, I had to find old Buick steel wheels for it unless I would have to use a spacer. I never looked at the wheel bearings to see if they were tapered roller or ball bearing type. I think all the old alum drums had the large center hole maybe? I agree that Buick sure held on to that obsolete design shit way past when they should have dumped it.
     
  7. 55olds88
    Joined: Jul 23, 2001
    Posts: 2,383

    55olds88
    Member

    digging up a real oldie (thanks Google) you mention spacers for other GM 5 on 5 wheels, I take it to move the wheel out a little so the wheel can get over the dumb arse big Buick hub centre ?? if so how big a spacer if anyone knows ?
     
  8. 40Standard
    Joined: Jul 30, 2005
    Posts: 5,810

    40Standard
    Member
    from Indy

    thank you for the guide. very helpful
     
  9. Hnstray
    Joined: Aug 23, 2009
    Posts: 11,650

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    The beloved Chevy used ball bearings through 1960 as well....:cool:

    Ray
     
  10. 55olds88
    Joined: Jul 23, 2001
    Posts: 2,383

    55olds88
    Member

    so does anyone know the width of the spacer to get other GM wheels to fit Buick ?
     
  11. Hnstray
    Joined: Aug 23, 2009
    Posts: 11,650

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    Spacers/wheel adapters can be gotten in various widths, but most common is, I believe, about 1" to 1 1/4".

    Ray
     

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