widest tire?
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Senior Member
Joined: Feb 2010
Posts: 258
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From: in my car
Car: 1987 Gta Trans Am
Engine: 383 Stroker
Transmission: t-56
Axle/Gears: 3.47 02 SS rear end
widest tire?
So my trans am has a rear end from a camaro ss 2002. The tires stick out about 3 inches each side. If anyone has a similiar setup, whats the widest? 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: widest tire?
holy crap! if the tire is 3" outside the car, im sure you could fit a 335 without any wheel well work. It will look like total hell, but it will probably fit
Thread Starter
Senior Member
Joined: Feb 2010
Posts: 258
Likes: 0
From: in my car
Car: 1987 Gta Trans Am
Engine: 383 Stroker
Transmission: t-56
Axle/Gears: 3.47 02 SS rear end
Re: widest tire?
the car isnt close by. I cant remember if it was 3 inches each side or 3inches total. If it stuck out 1 1/2 each side what would be the widest?
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: widest tire?
well it does really depend on what width wheel you use and how far its actually stick out
Re: widest tire?
not to hijack, but. i have 89 stock iroc 15 inch wheels. right now i have 255 60 15 bf comp t/a. i like the beefy and very wide look, however- my application calls for r compounds. is any one running r888 or Ao48? id even consider RT-615 .what size is the largest/widest i could fit?
Junior Member
Joined: May 2007
Posts: 13
Likes: 0
From: birmingham al
Car: 88 camaro
Engine: 383 stroker
Transmission: th350
Axle/Gears: stock rear end with moser 411s
Re: widest tire?
first your 4th gen rear is wider than a 3rd gen. so if you pu your stock wheels on a fourth gen rear it will hang out the fenders. you can safely run a 285 on the rear. but you need wheels with te corect ofset from a 98 or up fourth gen
Joined: Jun 2004
Posts: 914
Likes: 29
From: Las Vegas
Car: '88 Trans Am
Engine: 5.7L TPI
Transmission: Slushbox
Axle/Gears: 3.27
Re: widest tire?
Try a set of wheels from a 4th gen they should fit perfectly! That will be the type of offset you need....
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Junior Member
Joined: May 2007
Posts: 13
Likes: 0
From: birmingham al
Car: 88 camaro
Engine: 383 stroker
Transmission: th350
Axle/Gears: stock rear end with moser 411s
Re: widest tire?
you definetly need fourth gen wheels but i am not shure if the 93-97 have the same ofset as the 98-02 i would just double check
Joined: Jun 2004
Posts: 914
Likes: 29
From: Las Vegas
Car: '88 Trans Am
Engine: 5.7L TPI
Transmission: Slushbox
Axle/Gears: 3.27
Joined: Jun 2004
Posts: 914
Likes: 29
From: Las Vegas
Car: '88 Trans Am
Engine: 5.7L TPI
Transmission: Slushbox
Axle/Gears: 3.27
Re: widest tire?
At this point the only thing you can do is swap back to the 3rd gen rear end,swap the LSD and gears over be sure to use 89-92 axles(28-spline) the rear ends are 2" different in length.
Thread Starter
Senior Member
Joined: Feb 2010
Posts: 258
Likes: 0
From: in my car
Car: 1987 Gta Trans Am
Engine: 383 Stroker
Transmission: t-56
Axle/Gears: 3.47 02 SS rear end
Re: widest tire?
can i ask why? I already have tires on my car and everythings fine... just need new tires now.
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Joined: Jul 1999
Posts: 12,212
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: widest tire?
I have 315s on 11" wheels and they are almost 1/2" in & not sticking out. And I'm not the only one here. The wheels determine where the tires end up, regardless of the rear end width.
Post up a pic of you tires "sticking out 3 inches".
Even with the GTA rear rear (not front wheels on the rear) they should end up flush with the outer fender lip & not stick out.
There is a difference between SITTING out & STICKING out. I suspect that your definition of "sticking out" is different than what most people would call it.
Here's mine.....

And here is a Camaro with a 4th gen rear end & stock rear offset 16" 3rd gen wheels (the same as your GTA wheels).....
Post up a pic of you tires "sticking out 3 inches".
Even with the GTA rear rear (not front wheels on the rear) they should end up flush with the outer fender lip & not stick out.
There is a difference between SITTING out & STICKING out. I suspect that your definition of "sticking out" is different than what most people would call it.
Here's mine.....

And here is a Camaro with a 4th gen rear end & stock rear offset 16" 3rd gen wheels (the same as your GTA wheels).....
Joined: Jun 2004
Posts: 914
Likes: 29
From: Las Vegas
Car: '88 Trans Am
Engine: 5.7L TPI
Transmission: Slushbox
Axle/Gears: 3.27
Re: widest tire?
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: widest tire?
Joined: Jun 2004
Posts: 914
Likes: 29
From: Las Vegas
Car: '88 Trans Am
Engine: 5.7L TPI
Transmission: Slushbox
Axle/Gears: 3.27
Re: widest tire?
To me it does...looks like the wrong wheel offset for the car...
Too much inner wheel well not being used.......
Last edited by 92droptopws6; Feb 10, 2010 at 05:50 PM.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 9
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: widest tire?
My back spacing is off a little but I don't have a problem with it. Those are 295/50r15s in the rear on a 8in. wheel.
Last edited by Ron U.S.M.C.; Feb 10, 2010 at 08:34 PM. Reason: add a photo
Joined: Dec 2000
Posts: 2,361
Likes: 2
From: Buffalo, NY
Car: 1984 Trans Am
Engine: LT1
Transmission: T56
Axle/Gears: 10 bolt w/ 4.10 gears
Re: widest tire?
I think there's a problem with that blue camaro and a HUGE problem with the red one! The blue one I'd be okay with if the rim were 10 or 10.5 inches wide so the wheel well was completely full. it looks strange having "skinny" tires being pushed out that far. Ronusmcmma, your camaro is otherwise beautiful, but don't those rear tires slam your fender when you launch?
Joined: Dec 2000
Posts: 2,361
Likes: 2
From: Buffalo, NY
Car: 1984 Trans Am
Engine: LT1
Transmission: T56
Axle/Gears: 10 bolt w/ 4.10 gears
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 9
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: widest tire?
When I finally do decide to replace the wheels on my car I will have the correct back spacing. I made a mistake with my first try at wheel fitment. No the rear tires don't bottom out at any time because Im running a set of independently controlled rear air shocks rated up to 1000 pounds . There made for towing or caring heavy loades. There's very little give to them.
Last edited by Ron U.S.M.C.; Feb 11, 2010 at 11:13 PM. Reason: add info.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 9
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: widest tire?
OK, decided to fix the rear backspacing on my car. Been looking at these wheels in a 15in. by 8in. rear with a 5.5 backspacing to compliment a 295/50r15 tire. They offer the same for the front but with a 4.0 backspacing. What do you think?
I need to fix this=
I need to fix this=
Last edited by Ron U.S.M.C.; Feb 11, 2010 at 11:25 PM. Reason: add info.
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Joined: Jul 1999
Posts: 12,212
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: widest tire?
I ran 17" x 9" 5" bs front & rear with zero clearance issues. For a 8" wheel, I'd go 4.5"bs (4" is the center of where the tire seats, the .5" comes from the rim lip).
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 9
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: widest tire?
I did not mean to high jack his thread so started a new one. Always nice to hear from you Stephen.
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iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Junior Member
Joined: Mar 2004
Posts: 71
Likes: 0
From: Myrtle Beach, SC
Car: 84 15th Anniversary Trans Am
Engine: built 406
Transmission: T-5
Axle/Gears: 3.73 10bolt
Re: widest tire?
I'll looking to run 315/45/16 on a 10.5 rim, I'm assuming with those aboved mentioned offsets no mini tubs are needed?
What are the stock 3rd gen offsets?
What are the stock 3rd gen offsets?
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iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: widest tire?
Our front 16x8" 0mm offset front rims would have 4.25" of backspacing.
The rear 16" x 8" 16mm positive offset rims (16mm/25.4 = 0.63") have about 4.9" of backspacing
Where are you going to find a tire that size?
The rear 16" x 8" 16mm positive offset rims (16mm/25.4 = 0.63") have about 4.9" of backspacing
Where are you going to find a tire that size?
Joined: Dec 2000
Posts: 2,361
Likes: 2
From: Buffalo, NY
Car: 1984 Trans Am
Engine: LT1
Transmission: T56
Axle/Gears: 10 bolt w/ 4.10 gears
Re: widest tire?
Hey Jim! I don't see that size existing on Tire Rack. Also, that would be a 27" diameter tire. I'm thinking about going with a 27" tire also, but I wanted to make sure you take overall diameter into account when selecting a size. What style rims were you gonna run?
Junior Member
Joined: Mar 2004
Posts: 71
Likes: 0
From: Myrtle Beach, SC
Car: 84 15th Anniversary Trans Am
Engine: built 406
Transmission: T-5
Axle/Gears: 3.73 10bolt
Re: widest tire?
http://www.summitracing.com/parts/MTT-3795R/
I'm gonna get 16 inch rims like my stock ones, widen them to 10-11 inch in width. It looks like 11 would be better.... a few years down the road.
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