Wheel Fitment
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Junior Member
Joined: Aug 2016
Posts: 73
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From: Baltimore, Maryland
Car: 1992 Firebird
Engine: 3.1 6 cylinder
Transmission: 700R4 automatic 4 speed
Wheel Fitment
I have a 1990 formula and want to put an 8"wide wheel on it. It also has a 0mm offset. Will this wheel stick out past the fender? Also what size tire should i run with an 8" wide wheel?
Thanks!
Thanks!
Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Wheel Fitment
It will fit fine.
Size depends a lot on the wheel diameter, but will be around a 245 width for most setups
Size depends a lot on the wheel diameter, but will be around a 245 width for most setups
Thread Starter
Junior Member
Joined: Aug 2016
Posts: 73
Likes: 0
From: Baltimore, Maryland
Car: 1992 Firebird
Engine: 3.1 6 cylinder
Transmission: 700R4 automatic 4 speed
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Joined: Jul 2013
Posts: 179
Likes: 46
From: Green bow Ala-freakin-bama
Car: 88 Iroc
Engine: 388 Vortec Pro-Flo 4 Small Block
Transmission: T56
Axle/Gears: 3.77 to 1
Re: Wheel Fitment
Aight guys need some wheel suggestions that fit my car with no spacers. Currently have an IROC with 16” stock wheels and a SS4 baer brake upgrade on front and rear and my differential is a 9 bolt. I ended up using a 0.625 inch spacer to clear the rear rim spokes from the caliper. I also have coil over conversion on front and rear. Just want some suggestions, my car will be for road racing and auto x.
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Joined: Apr 2010
Posts: 1,198
Likes: 126
From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Wheel Fitment
Aight guys need some wheel suggestions that fit my car with no spacers. Currently have an IROC with 16” stock wheels and a SS4 baer brake upgrade on front and rear and my differential is a 9 bolt. I ended up using a 0.625 inch spacer to clear the rear rim spokes from the caliper. I also have coil over conversion on front and rear. Just want some suggestions, my car will be for road racing and auto x.
Joined: Dec 2000
Posts: 2,341
Likes: 151
From: Cincinnati,Ohio
Car: 1991 BandittII Firebird
Engine: 5.7 HSR
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
Supreme Member
Joined: Apr 2010
Posts: 1,198
Likes: 126
From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
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Joined: Jul 2013
Posts: 179
Likes: 46
From: Green bow Ala-freakin-bama
Car: 88 Iroc
Engine: 388 Vortec Pro-Flo 4 Small Block
Transmission: T56
Axle/Gears: 3.77 to 1
Re: Wheel Fitment
Thread Hijacking what is that? I’ve brought many threads back from the dead I’m pretty sure I’ve set records.
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Joined: Sep 2002
Posts: 2,565
Likes: 10
From: Texas
Car: 1992 Formula Firebird
Engine: 305CID (LB9)
Transmission: World Class T5
Axle/Gears: 10-bolt, 4.10 gears
Re: Wheel Fitment
I think you can go as wide as 315 on the back of a third gen F-body without modifying anything. I'm pretty sure the 17x11 OE replicas and the like will fit these cars without issue. They definitely fit the fourth generation F-bodies and as I recall, they will also work on third generation cars just as well.
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iTrader: (1)
Joined: Sep 2002
Posts: 2,565
Likes: 10
From: Texas
Car: 1992 Formula Firebird
Engine: 305CID (LB9)
Transmission: World Class T5
Axle/Gears: 10-bolt, 4.10 gears
Re: Wheel Fitment
Using 17"x11" wheels on a third or fourth generation F-body, you will not need spacers to go up to 315/35/R17's. However, you can get 335's on 17x11" wheels. If you go up to 335's you will probably have to cut off the bump stops and hammer the inner wheel well to make them clear. If you use spacers on 335's they'll stick out way too far.
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Joined: Nov 2023
Posts: 13
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Re: Wheel Fitment
I think you can go as wide as 315 on the back of a third gen F-body without modifying anything. I'm pretty sure the 17x11 OE replicas and the like will fit these cars without issue. They definitely fit the fourth generation F-bodies and as I recall, they will also work on third generation cars just as well.
Joined: Feb 2001
Posts: 13,756
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: Wheel Fitment
Using 17"x11" wheels on a third or fourth generation F-body, you will not need spacers to go up to 315/35/R17's. However, you can get 335's on 17x11" wheels. If you go up to 335's you will probably have to cut off the bump stops and hammer the inner wheel well to make them clear. If you use spacers on 335's they'll stick out way too far.
335's will not fit properly, even when tubbed. I went through this ordeal years ago in hopes of running the Z07 C6 wheel. Even when fully tubbed, a 335 tire stuck outside the fender and hit the pan hard rod mount. It would take major suspension surgery to make work and these cars start to look goofy with rubber wider than 305 out back. You're better off getting stickier rubber to make up for width.
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