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    1. #1
      Join Date
      Feb 2005
      Location
      Waterloo, Ia
      Posts
      1,408

      67' GTO maximum wheel/tire sizes

      WOW. Lots of GTO wheel threads going on here! Are the GTO's catching on in the PT world? Anyhow mine is a 67' GTO. Everything is stock right now. Does anyone know what the maximum size 17" wheel/backspace/tire i can comfortably run front and rear on this car? I havent gotten under and measure yet because im in Iowa and its freezing out! Anyone know? Also im on a budget so im thinking im going to go with vintage wheel works V-40's are these a good wheel?

      -Nick
      -1967 GTO I drive and race
      -Build threads:
      -http://forums.maxperformanceinc.com/forums/showthread.php?t=615847&page=23
      -https://www.pro-touring.com/showthre...project-thread



    2. #2
      Join Date
      Dec 2008
      Location
      Middletown, Ohio
      Posts
      45
      hit up performance years pontiac forums with this question
      Clay Marsh
      1967 GTO 'Vert TT 5spd, HX35's

    3. #3
      Join Date
      Oct 2008
      Location
      texas
      Posts
      529
      Country Flag: United States
      here is my input on a 65 gto, I have a 65 cutlass same as the gto of those years
      https://www.pro-touring.com/forum/sh...ad.php?t=51411
      This is Larry Callahan adding to Rocky's profile.

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

      RIP....

    4. #4
      Join Date
      Feb 2005
      Location
      Waterloo, Ia
      Posts
      1,408

      re

      Yeah i did that already and i couldnt get much from it. One guy was running a 275/60/15 tire in back and a 235 in front, but thats about all i got.
      -Nick
      -1967 GTO I drive and race
      -Build threads:
      -http://forums.maxperformanceinc.com/forums/showthread.php?t=615847&page=23
      -https://www.pro-touring.com/showthre...project-thread


    5. #5
      Join Date
      Jun 2008
      Posts
      4
      Country Flag: United States
      I ran across this article when looking for my 70. Doesn't provide as many options for the 64-67 A-Bodies but might give you a general idea. I still think you would want to measure twice, buy once.

      http://www.oldsmobility.com/fitting-wheels.htm

    6. #6
      Join Date
      Feb 2006
      Posts
      478
      I run a 17x8 with 5" BS on the front with a 245/45/17 and I have no issues at all. My car sits pretty low, about 5" under the engine crossmember. When I ran it at 4", I would have a rub if i cut the wheels to hard and hit a bump like going in and out of uneven entrances. But that is really low.

      In the rear I run a 295/45/18 with a 18x9.5 with a 5.5 BS. I had to do some pretty serious reconstruction of the outer wheelhouse to get that on there though. The inner is stock and the frame is stock. I have about 1/2" of clearance back there. No rubs out back either and they are tucked!
      Alex Godsey
      Somerset, KY
      Pro Touring 67 GTO
      461 Pontiac Power

    7. #7
      Join Date
      Jan 2005
      Location
      Dallas TX
      Posts
      1,633
      Quote Originally Posted by gearbanger View Post
      I run a 17x8 with 5" BS on the front with a 245/45/17 and I have no issues at all. My car sits pretty low, about 5" under the engine crossmember. When I ran it at 4", I would have a rub if i cut the wheels to hard and hit a bump like going in and out of uneven entrances. But that is really low.

      In the rear I run a 295/45/18 with a 18x9.5 with a 5.5 BS. I had to do some pretty serious reconstruction of the outer wheelhouse to get that on there though. The inner is stock and the frame is stock. I have about 1/2" of clearance back there. No rubs out back either and they are tucked!
      Have I told you lately how perfect I think your car is.

    8. #8
      Join Date
      Feb 2006
      Posts
      478
      Thanks gearheads78! I really appreciate it.

      I finally broke down this fall and took the car completely down. It now sits off the frame awaiting blasting. The frame is now boxed and all the rusty body mounts are fixed. Soon it will be ready for powercoat but I am going to wait till I get all the sheet metal work done on the body before I have it coated. I want to do the sheetmetal work with the body mounted to the frame. I am just anal about that I guess...

      Don't mean to hijack!
      Alex Godsey
      Somerset, KY
      Pro Touring 67 GTO
      461 Pontiac Power

    9. #9
      Join Date
      Jan 2009
      Posts
      111
      Quote Originally Posted by gearbanger View Post
      I run a 17x8 with 5" BS on the front with a 245/45/17 and I have no issues at all. My car sits pretty low, about 5" under the engine crossmember. When I ran it at 4", I would have a rub if i cut the wheels to hard and hit a bump like going in and out of uneven entrances. But that is really low.

      In the rear I run a 295/45/18 with a 18x9.5 with a 5.5 BS. I had to do some pretty serious reconstruction of the outer wheelhouse to get that on there though. The inner is stock and the frame is stock. I have about 1/2" of clearance back there. No rubs out back either and they are tucked!
      Alex,

      I'll be running a similar setup on my 66 Chevelle (which is similar to a GTO in wheel fitment im' guessing). Do you have more pictures of your car? It's awesome!

      I'd really like a side view since i've been struggling with tires sizes but I think you've hit a good look!!

    10. #10
      Join Date
      Jan 2005
      Location
      Dallas TX
      Posts
      1,633
      Quote Originally Posted by RYU View Post
      Alex,

      I'll be running a similar setup on my 66 Chevelle (which is similar to a GTO in wheel fitment im' guessing). Do you have more pictures of your car? It's awesome!

      I'd really like a side view since i've been struggling with tires sizes but I think you've hit a good look!!
      Here is what my combo will look like for my 66 Cutlass. Should be very similar to 66/67 GTO and Chevelle.

      18 x 10 with 285-40-18 and 18 x 9 with 255-40-18

    11. #11
      Join Date
      Jan 2009
      Posts
      111
      Quote Originally Posted by gearheads78 View Post
      Here is what my combo will look like for my 66 Cutlass. Should be very similar to 66/67 GTO and Chevelle.

      18 x 10 with 285-40-18 and 18 x 9 with 255-40-18
      at first you threw me off and I thought that was a new invisible wheel design! lol

    12. #12
      Join Date
      Feb 2006
      Posts
      478
      I wish I could take credit for the look, but I actually copied from a Chevelle!
      Alex Godsey
      Somerset, KY
      Pro Touring 67 GTO
      461 Pontiac Power

    13. #13
      Join Date
      Feb 2006
      Posts
      478
      Here are some more of mine.
      Alex Godsey
      Somerset, KY
      Pro Touring 67 GTO
      461 Pontiac Power

    14. #14
      Join Date
      Sep 2008
      Location
      Elkhart, Indiana
      Posts
      64
      I am going to have to agree with Richard in saying WOW about your car I hope my sits as low and as good as yours does. Do you have anu spec or any details about it.

      Stephan

      Quote Originally Posted by gearbanger View Post
      Here are some more of mine.
      1967 Oldsmobile Cutlass
      468 BB Olds
      Future plans dual throttle-body injection
      Pro-touring suspension
      Nice stock looking interior


    15. #15
      Join Date
      Jan 2009
      Posts
      111
      Quote Originally Posted by gearbanger View Post
      I wish I could take credit for the look, but I actually copied from a Chevelle!
      https://www.pro-touring.com/forum/at...8&d=1233015333

      LOL! I love that picture.

    16. #16
      Join Date
      Feb 2006
      Posts
      478
      I also copied off this guy. He has a way cool chevelle!
      Alex Godsey
      Somerset, KY
      Pro Touring 67 GTO
      461 Pontiac Power

    17. #17
      Join Date
      Jun 2009
      Location
      norcal
      Posts
      27
      Country Flag: United States
      I have a 67 Tempest im running Coys c5 18x7 in front and 20x8.5 with a 275 in the back with 2 inch lowering springs...no issues
      __________________________________________________ __________________________________________________ ______

      Silvio

      " You were good kid, real good, but as long as Im around you'll always be second best."

      1996 FJ80
      1968 Firebird 400
      2010 Prius
      2002 Aprilia Caponord

    18. #18
      Join Date
      Dec 2006
      Location
      ROBBIEVILLE
      Posts
      263
      Country Flag: Great Britain
      how does this car look now ? are the wheels running smooth no issues ? did you lower the car ?
      1966 GTO HELL BEAST PROJECT

    19. #19
      Join Date
      Apr 2011
      Posts
      1
      Can I see a pic of your 67 tempest with the 18s and 20s. I have a 66 Gto that I was thinking about running this combo. Thanks

    20. #20
      Join Date
      Dec 2006
      Location
      ROBBIEVILLE
      Posts
      263
      Country Flag: Great Britain

      Wheels and fitment

      Running 19X8 in the front 235/35/19 backspacing 3.75 and 20x10 in the rear, backspacing 5. 275/35/20 - no issues no rubbing
      Attached Images Attached Images    
      1966 GTO HELL BEAST PROJECT

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