| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
11-09-2005, 12:46 PM
|
||||
|
||||
Diameter of G70-14 Tire
Hi,
I have finished restoring a set of 15x7" Rally II wheels for my 68 GTO. ( I know that they are not the correct 14x6" wheels for the car) I need to know the diameter of the G70-14 tires that were OEM on the car. I want to match my 15" tires to that diameter, so that my speedometer will be near to my actual speed. I can optimize the tire width and sidewall height once I know the diameter. I have looked on various websites and found diameters that range from 26.2" to 26.8" for the G70-14s. What is the correct diameter for the G70-14 tire? Thanks, Mike
__________________
1968 Pontiac GTO 462CID, 4-Speed Manual, 3.55 rear. Aleutian Blue exterior, 219 Teal Blue interior. Chrome bumper, AM & 8-Track and Rally II Wheels |
|
#2
11-09-2005, 01:14 PM
|
|||
|
|||
|
Coker tire shows them to be 26.8". I would go with that. A 245-60-15 BFG Radial T/A shows to be 26.6" tall. A 255-60-15 is 27.1". I went with 235-60's on the front and 255-60's on the back on my 15x7 " Rally II's on my 69 Gto convertible.
|
|
#3
11-09-2005, 02:50 PM
|
||||
|
||||
|
Hi,
Any problem with rubbing or clearance? Mike
__________________
1968 Pontiac GTO 462CID, 4-Speed Manual, 3.55 rear. Aleutian Blue exterior, 219 Teal Blue interior. Chrome bumper, AM & 8-Track and Rally II Wheels |
|
#4
11-09-2005, 06:04 PM
|
||||
|
||||
|
I run the same size tires as 69gtocv. They fit perfectly and look great.
__________________
1966 GTO 1969 Lemans Convertible- F.A.S.T. legal family cruiser. 12.59 on G70-14 Polyglas tires. 1.78 60' 1969 Bonneville Safari- cross country family cruiser. . 1979 Trans Am 400, 4-speed, 4 wheel disc. View from the drivers seat racing down Atco Raceway- http://www.youtube.com/watch?v=GhYDMdOEC7A Ride along in the other lane-http://www.youtube.com/watch?v=mIzgpLtF_uw |
|
#5
11-10-2005, 12:25 PM
|
|||
|
|||
|
Unfortunately, mine is still not done. I was supposed to get it done this summer, but not to be. Next spring I guess
|
|
#6
11-10-2005, 06:08 PM
|
|||
|
|||
|
Six-tenths of an inch difference in the tire diameter is due to the different brands' construction and will not be visible whatsoever in the speedo. Split the difference and march on.
|
| Reply |
|
|
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.
Linear Mode
