fitment expert want to help me out? (I have no wheel knowledge)
Thread Starter
Junior Member
iTrader: (1)
Joined: Jan 2013
Posts: 64
Likes: 0
From: Hobart, Indiana
Car: 1991 Firebird
Engine: stock 305
Transmission: Stock auto
Axle/Gears: stock
fitment expert want to help me out? (I have no wheel knowledge)
So 91 firebird stock spec. suspension and brakes.. (front disk rear drums)
Ok for the front I want to run a 19x9.5 rim with an offset option of either 22 33 or 43
And for the rear 19x11 rim with an offset of either 25 or 33
Basically I need to know...
A. What offset should I use for the front and for the rear without the wheels sticking out past my fenders.. I want them flush and I'd rather have them in a bit and have to run spacers to get them flush then have them out too far..
B. What size wheels could I throw on these rims that will allow them to fit still...
They are the avant garde m310 rims just incase your wondering lol
Ok for the front I want to run a 19x9.5 rim with an offset option of either 22 33 or 43
And for the rear 19x11 rim with an offset of either 25 or 33
Basically I need to know...
A. What offset should I use for the front and for the rear without the wheels sticking out past my fenders.. I want them flush and I'd rather have them in a bit and have to run spacers to get them flush then have them out too far..
B. What size wheels could I throw on these rims that will allow them to fit still...
They are the avant garde m310 rims just incase your wondering lol
Member
Joined: Aug 2013
Posts: 390
Likes: 0
From: Milltown, NJ
Car: 86 iroc, 02 v6 camaro
Engine: 350 HSR, 3800 V6
Transmission: T56, WCT5
Axle/Gears: 9in 4.11 posi, 3.23 LSD
Re: fitment expert want to help me out? (I have no wheel knowledge)
you will need atleast a 1-1.5in spacer for both the front and rear with the 22/25 offsets
personally i think a 19x11 is overkill... why not just do 19x9.5 all the way around with 285/30/19 tires?
personally i think a 19x11 is overkill... why not just do 19x9.5 all the way around with 285/30/19 tires?
Supreme Member

Joined: Jul 1999
Posts: 2,756
Likes: 10
From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: fitment expert want to help me out? (I have no wheel knowledge)
That being said, a 0 offset (or 5.25" BS) will bring the edge of a 9.5" wheel with a 275 tire right to the edge of the fender well on all 4 corners. If you were to get the 33mm and a 1" spacer, it would tuck in about 1/3".
On Probation
Joined: Oct 2008
Posts: 6,319
Likes: 19
From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: fitment expert want to help me out? (I have no wheel knowledge)
I'm going to add that 19" is an oddball size for tires - much more is available in 18" or even 20". Keep in mind that a 19" wheel with an OEM height tire is going to have only 2.25" of actual sidewall, not something smart for roads in the northern states. Not to mention that any brake kit under 14" is going to look rediculously small (if you are into the looks part).
That being said, a 0 offset (or 5.25" BS) will bring the edge of a 9.5" wheel with a 275 tire right to the edge of the fender well on all 4 corners. If you were to get the 33mm and a 1" spacer, it would tuck in about 1/3".
That being said, a 0 offset (or 5.25" BS) will bring the edge of a 9.5" wheel with a 275 tire right to the edge of the fender well on all 4 corners. If you were to get the 33mm and a 1" spacer, it would tuck in about 1/3".
Supreme Member

Joined: Jul 1999
Posts: 2,756
Likes: 10
From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: fitment expert want to help me out? (I have no wheel knowledge)
Sorry Paul, but most of the truly extreme performance tires, like the Michelin Pilot sport Cup and the Pirelli P Zero Corsa, are mostly 19" fitments. I hereby sentence you to 77.7 hours of studying www.tirerack.com.
LOL
I should clarify - 19" tires with a diameter of 25.75" or so to mimic what came from GM on the 3rd gens. Majority of the 19" tires are taller (which makes the sidewall more tolerable)...
Who the F runs Pilot Sport Cups or P Zero Corsas on a 3rd gen?
Thread
Thread Starter
Forum
Replies
Last Post
punkmaster98
Interior Parts for Sale
0
Sep 8, 2015 09:45 PM
Glowsock
Tech / General Engine
1
Sep 6, 2015 06:40 AM




