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Technical 1955 Oldsmobile will 8" rims fit on the back?

Discussion in 'The Hokey Ass Message Board' started by flatoz, Apr 11, 2019.

  1. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

    Hello All,

    I want to put 8" rims on the rear of my 1955 Olds, they have 0 back space so are centered. Just wondering if anyone has done this? As I know there are a few 54-56 Olds owners here. I currently have the original steel wheels on the car. I will attach a photo of the car as I know... photos!
     
  2. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

  3. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,658

    wvenfield
    Member

    This doesn't answer your question but I have 8 inch on the back of my 56 Pontiac. 5 inch backspace.
     
  4. Rckt98
    Joined: Jun 7, 2005
    Posts: 833

    Rckt98
    Member

    It will be a struggle. I tried to do the same on my 56 98 coupe and ended up with 7" rims which fitted OK.
    The car has been sold but from memory it is a lack of room higher up in the guard?
     
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  5. 302GMC
    Joined: Dec 15, 2005
    Posts: 5,472

    302GMC
    Member
    from Idaho

    You'd need two jacks & drop the shocks to change tires.
    Nice Olds … I'd just find a set of Starfires & call it good
     
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  6. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

    I could live with that . As long as they fit.
     
  7. Hnstray
    Joined: Aug 23, 2009
    Posts: 10,257

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    Very nice looking Olds! Question, what benefit could you possibly gain from an 8” wide wheel, versus a 7” or even a 6.5”, that would justify the tire changing difficulties described?
     
  8. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

    it would be to do with the set of wheels I can get or am getting. they come in 7 and 8. You have to remember that 5x5 bolt pattern is not common here in Australia so I'm limited both by bolt pattern or PCD and $$ too of course. If I want to pay $1600-2000 for a set of wheels then that's fine. which I don't. Hopefully I'll only be putting the wheels and tyres on the car once and then taking them off again when they need new tyres.
     
  9. Hnstray
    Joined: Aug 23, 2009
    Posts: 10,257

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    Thank you for the reply.
     
  10. karl share
    Joined: Nov 5, 2015
    Posts: 70

    karl share
    Member

    The 57 in my avtar can not fit 8 inch rear wheels 7 inch is max, as i have tried. your 55 may be different, the inside of the rear tyre runs really close to the leaf spring you have to choose the inside offset really carefully
     
  11. 0NE BAD 51 MERC
    Joined: Nov 12, 2010
    Posts: 859

    0NE BAD 51 MERC
    Member

    around here 76 to 87 gm I/2 ton 4x4s where available with a 8" ralley wheel that was 5 on 5 or maybe even an old aftermarket chrome spoke for that matter. If you could buy or borrow a used one you could test fit and see how or if it would fit and adjust from there, without buying new wheels and going oh, oh. Been there done that! Larry
     
  12. RockyMtnWay
    Joined: Jan 6, 2015
    Posts: 50

    RockyMtnWay
    Member

    48F16876-2CB8-41A5-B398-941F7D7AEE3A.jpeg Not sure if inner fender structure same across gm lines, but I did stuff some GM (corvette) rallies with BFGoodrich 255/70s under my 56 chubby rear a few years back. Had rusty keystones on her when I found her and I had the rallies from another project, so made em fit.
    ‘Made em fit’ means I had to roll the fenders’ inner lips a bit for clearance. Easy squeezy.
     
  13. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

    Thanks Karl,
    the 57 was the change year, so 54-56 will be the the same. plus the 57 went to 14" rims and the rear end that is used by early drag racers. ( wish I had one of those, easier for rear end ratios)

    Merc, thanks, distance makes it a bit difficult to get one of those rims as we never got them here

    Rocky, thanks, not sure either but the rear radius on the fender in a chev makes it easier to start. but the inboard as Karl mentioned may be an issue.

    I probably should have just gone for 7" all round. May still have to do so.

    thanks All.
     
  14. Mr48chev
    Joined: Dec 28, 2007
    Posts: 24,590

    Mr48chev
    ALLIANCE MEMBER

    From my tire store days It is a bit of a challenge to change tires on the back of of those Olds when they go up one tire size on stock rims. That was on a hoist with the axles hanging down. the
    I've been around one rig that you had to take the rear shock loose and put a bottle jack between the spring/axle and frame to get clearance to change the tire and I can assure you from experience it isn't something you want to have to do on the side of the road when there is no choice. I was
    50 something years younger then when a buddy had that car. Probably one of the reasons we always took my 55 Buick on double dates rather than his custom.
     
  15. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

    Thanks Mrchev.

    I understand this and have to use two Jack's currently. So that doesn't scare me off. Plus I don't carry a spare in this car - right or wrong. So any flat etc is a flat tow anyway.

    I spoke to the wheel seller this morning and I may just swap out the 8" rims for 7s to make life a little easier. It will cost me. But might just be a little easier in years to come.
     
  16. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

    Ok,

    to reply to this question. I ended up going 7" on the rear, sort of glad I did, but really wanted the 8" anyway this is how it came out. I prefer the WWW look but , this will be how it is now. I'm not expecting to get many 'nice chevy' comments.... 20190426_170555_resized_2.jpg


    20190426_171511_resized_2.jpg
     
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  17. Rckt98
    Joined: Jun 7, 2005
    Posts: 833

    Rckt98
    Member

    That looks good.
    My 56 with 15 x 7 rims. IMG_0896.JPG
     
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  18. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

  19. andydodge
    Joined: Sep 28, 2008
    Posts: 834

    andydodge
    Member

    Pete........nice Olds............put a Poly in it yet?...........lol...........o/k...I'll go sit in my corner....lol........andyd
     
  20. swifty
    Joined: Dec 25, 2005
    Posts: 1,464

    swifty
    Member

    Not mine Andy, that's #1 son Coreys daily. Was 324 and Hydramatic but now runs a strong 455 and 200-4R, killed 3 T400's before he de-tuned it.
     
  21. flatoz
    Joined: May 11, 2003
    Posts: 3,103

    flatoz
    Member

    Dads too smart to own a General Maintenance product
     

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