Tire / Wheel Size thoughts.... - First Generation Pontiac Firebird (1967 - 1969) - Firebird Nation

Jump to content

FirebirdNation.com is the premier Pontiac Firebird forum on the internet. Supporting Members do not see the above ads.
- - - - -

Tire / Wheel Size thoughts....

  • Please log in to reply
No replies to this topic

#1 DM3


    Firebird Tune up Technician

  • Full Member
  • PipPipPipPipPip
  • 480 posts
  • Gender:Male
  • First Name:Dirk
  • City:Cherry Hill
  • State or Province:NJ
  • Country:USA
  • Year: 1967
  • Make: Pontiac
  • Model: Firebird
  • Engine: 400
  • Transmission: 4 Speed

Posted A week ago

So I am looking to replace the temp 18" wheels I bought.


Currently the front wheels rub on the subframe, but just barely.


Here is what I am currently running: 


Front: Ridler 18x8, 4.5 BS, 215/45 R18, Dia. 25.6, Width: 8.5

Rear: Ridler 18x8, 4.5 BS, 275/40 R18, Dia. 26.7, Width: 10.8


Here are my options:


Front:  17x7, 4 BS, 215/50 R17, Dia. 25.5, Width 8.5


17x7, 4 BS, 225/50 R17, Dia. 25.9, Width 8.9


same I am running now with a 1/4" spacer so it does not rub


Rears: same I am running now, no issues, plenty of room


18x9.5, 5 BS, 295/35 R18, Dia. 26.1, Width 11.6



Front, if I run 17's, I get an extra 1/2 inch the wheels move outward because of the back spacing, the 215 tires will not rub, the 225 tires would be really close.  If I go with the 18x8 in the front and 215 tire, I would need a 1/4" spacer to move out the wheel enough it would not rub.  I was told spacers are not a good option.


Rear, I can run what I have now, I like the look, but if I go to the 18x9.5, the wheel/tire will move in about an inch and will stick out past the wheel well edge by an inch, and the tire will be 1/2 inch smaller in diameter and almost an inch wider.


Please share your thoughts, comments or past experience.




Attached Files

Twitter: @Dirk67bird

1967 Firebird 400

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users