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    Results 1 to 5 of 5
    1. #1
      Join Date
      May 2010
      Posts
      23

      1964 Olds Cutlass F-85 Rim and Tire sizes please help...

      I currently have 18x8" wheels with 6.875" backspace on my car. They are 5x4.5 so i'm using 1.25" rear and 1" front billet bolt adapters which provide an end result:

      Front 18x8 = 5.875" backspace 225/45/18 tire
      Rear 18x8 = 5.625" backspace 225/60/18 tire

      The rears seem to be an absolute perfect fit with very little room to spare- centered very nicely in the wheelwell.

      The fronts seem very close to the lip, infact I cannot turn lock-to-lock because they scrub the inner lip pretty good.

      So is it because the car has the original suspension and it's sagging? Or is the 1964 so much different than the 1965 to 1968?

      I see all these cars online and in magazines running half the backspacing and much wider tires... what gives?

      Now that we know what's on the car- what is the absolute maximum I can run without heavy body modifications? I'd like to run a 18x9.5 or 18x10 with 275/40 rear tire. Even at 5.75 or 6" backspace I don't think it will fit on my car..... does anyone have experience with the 1964 A-body Oldsmobiles?

      Thanks a million in advance!

      Here's the car, sorry for the I-Phone photo. By the way, the 18" coddingtons with tires are for sale.



      Last edited by baggedK; 05-23-2010 at 02:35 PM. Reason: Meant to say the current coddington wheels are 4.5" BP and are for sale.


    2. #2
      Join Date
      Oct 2008
      Location
      texas
      Posts
      529
      Country Flag: United States
      I'm running 16x8 with 5.25 bs on front on mine. I had to roll the inner lip to clear. I'm running 225/60/r16 on all 4.
      This is Larry Callahan adding to Rocky's profile.

      I'm sorry to say that we have lost Rocky.

      RIP....

    3. #3
      Join Date
      Oct 2017
      Posts
      10
      Bringing this back from the deep deep dead....

      What'd you end up running wheel and backspace wise?

      I'm looking to get some 18s on my 64' and would like a 275 tire on the back

    4. #4
      Join Date
      Nov 2002
      Location
      Georgetown,TX
      Posts
      2,557
      The OP hasn't been on this site, for over six years.
      Do you also own a 64 Olds Cutlass?

    5. #5
      Join Date
      Oct 2017
      Posts
      10
      Quote Originally Posted by USAZR1 View Post
      The OP hasn't been on this site, for over six years.
      Do you also own a 64 Olds Cutlass?
      Oh...well then. Yes I have a 64 Cutlass I'm about to get some new shoes for.

      Looking at 18x9.5 and 18x8 would like a 275 in the rear but will be happy with a 255 . Fronts maybe 245?

      You have any thoughts for fitment?





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