Home Menu

Menu


          
PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 66-67 GTO Tempest & LeMans TECH > 1967 GTO Suspension And Tire Questions.
Reply
 
Thread Tools Display Modes
  #1  
Old 11-09-2020, 10:52 PM
ddshabes ddshabes is offline
Junior Member
  
Join Date: Oct 2019
Location: St. Louis
Posts: 2
Default 1967 GTO Suspension And Tire Questions.
Hi,
I have installed Global West tubular A-arms and The Right Stuff disc brake setup on my air-conditioned GTO convertible. I'm going to run 15x7 Pontiac Rally II wheels. The springs are from HO Racing.

Front springs are 15 inches tall and 480-inch pounds.
Rear springs are 13 11/16 tall and 156 inch-pounds.

My question is what size tires can I safely run without any rubbing issues?
Thanks for your help
Dan

Reply With QuoteReply With Quote
  #2  
Old 11-09-2020, 11:07 PM
67GTONUT's Avatar
67GTONUT 67GTONUT is offline
Ultimate Warrior
  
Join Date: May 2003
Location: Rockaway, NJ, USA
Posts: 1,501
Default
I run :

Front
235/60R15

Rear
245/60R15

I do know some people can go bigger on rear....

__________________
Troy
Rockaway NJ
67 GTO
400HO / TKX 3.27 1ST GEAR-.72OD / 3.36 POSI
HOTCHKIS/UMI/BILSTEIN
Reply With QuoteReply With Quote
The Following User Says Thank You to 67GTONUT For This Useful Post:
  #3  
Old 11-09-2020, 11:21 PM
ddshabes ddshabes is offline
Junior Member
  
Join Date: Oct 2019
Location: St. Louis
Posts: 2
Default
Quote:
Originally Posted by 67GTONUT View Post
I run :

Front
235/60R15

Rear
245/60R15

I do know some people can go bigger on rear....
Do you have the same modifications as my car?

Reply With QuoteReply With Quote
  #4  
Old 11-09-2020, 11:56 PM
67GTONUT's Avatar
67GTONUT 67GTONUT is offline
Ultimate Warrior
  
Join Date: May 2003
Location: Rockaway, NJ, USA
Posts: 1,501
Default
Quote:
Originally Posted by ddshabes View Post
Do you have the same modifications as my car?
Yep, pretty much

Hotchkis Springs
UMI Front arms with taller upper ball joints
Bilsteins

Front tire size will be critical depending on back spacing of the front wheels....

Running OEM Rally II's up front you should have the 4.25" BS I believe which should allow you to run the 235/60's up there.....

__________________
Troy
Rockaway NJ
67 GTO
400HO / TKX 3.27 1ST GEAR-.72OD / 3.36 POSI
HOTCHKIS/UMI/BILSTEIN
Reply With QuoteReply With Quote
  #5  
Old 11-10-2020, 01:40 PM
ZeGermanHam's Avatar
ZeGermanHam ZeGermanHam is offline
Ultimate Warrior
  
Join Date: Nov 2016
Location: Seattle, WA
Posts: 1,927
Default
Quote:
Originally Posted by 67GTONUT View Post
Yep, pretty much
What about brakes, though? OP mentioned using an aftermarket disc brake conversion kit, and most of those kits push the wheels outward a bit.

__________________

1966 Pontiac GTO (restoration thread)
1998 BMW 328is (track rat)
2023 Subaru Crosstrek Limited (daily)
View my photos: Caught in the Wild
Reply With QuoteReply With Quote
  #6  
Old 11-10-2020, 08:19 PM
67GTONUT's Avatar
67GTONUT 67GTONUT is offline
Ultimate Warrior
  
Join Date: May 2003
Location: Rockaway, NJ, USA
Posts: 1,501
Default
Brakes are stock drums in rear and 70 OEM front disc set up

__________________
Troy
Rockaway NJ
67 GTO
400HO / TKX 3.27 1ST GEAR-.72OD / 3.36 POSI
HOTCHKIS/UMI/BILSTEIN
Reply With QuoteReply With Quote
Reply

« Previous Thread | Next Thread »
Thread Tools
Display Modes
Linear Mode Linear Mode

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 09:52 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Contact Us Home
Copyright © 2017