Wheels and Tires Need help with wheels or tires? Got fitment issues? Have questions about tire performance and handling? Ask all of those questions here!

What's the widest tire?

Thread Tools
 
Search this Thread
 
Old Jun 19, 2010 | 05:51 PM
  #1  
breynolds's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2008
Posts: 179
Likes: 0
From: Des Moines, Ia
Car: 91 Firechicken
Engine: 355ci SBC
Transmission: 97GM BW T-56
Axle/Gears: 9", Moser 31 Splines 3.73s Trac Loc
What's the widest tire?

you can fit on a stock rearend without rubbing or having them stick out all to be hell?
Reply
Old Jun 19, 2010 | 05:55 PM
  #2  
Stephen's Avatar
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: What's the widest tire?

I've got 315s on my stock rear end. I'm not tubbed, but I did have to do some trimming to the inside of the fenderwell.

The BFG 295/50s on stock 16" wheels fit just fine too.

But you'll hafta be a little more specific on what wheels you are running or want to run.

Last edited by Stephen; Jun 19, 2010 at 06:05 PM.
Reply
Old Jun 19, 2010 | 06:56 PM
  #3  
breynolds's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2008
Posts: 179
Likes: 0
From: Des Moines, Ia
Car: 91 Firechicken
Engine: 355ci SBC
Transmission: 97GM BW T-56
Axle/Gears: 9", Moser 31 Splines 3.73s Trac Loc
Re: What's the widest tire?

I've got the stock 16" crosslace wheels on it now. I have no idea what the back spacing is. I'm going to be getting a set of Pro Stars for the track though. Kinda wanting to know how big a tire I can fit on both. 11.5 x 28? I had BFG G Force Sports on my GTA and had 255s on the stock crosslace wheels. Fit just fine. Wanna know if I can go bigger.
Reply
Old Jun 19, 2010 | 07:27 PM
  #4  
Stephen's Avatar
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: What's the widest tire?

Te BFG 295/50s will fit your crosslaces, but they are the greatest as far as traction though. good for the street, but they are H-rated tires. Not real soft but great for a highway tire.

Your rear crosslaces are 16m positive offset, or 4.9" backspacing. Call it 5" for ease. You can go 6" easily & 6.5" isn't real hard, but you'd wanna make sure the rear axle is centered. Mine was off by almost a full inch with the stock PHB, so I got me an adjustable one to center it up good, to fit the 315s under my fenders.
Reply
Old Jun 19, 2010 | 08:43 PM
  #5  
breynolds's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2008
Posts: 179
Likes: 0
From: Des Moines, Ia
Car: 91 Firechicken
Engine: 355ci SBC
Transmission: 97GM BW T-56
Axle/Gears: 9", Moser 31 Splines 3.73s Trac Loc
Re: What's the widest tire?

Ahh...good tip. So what size exactly are you running under yours then. What combo as far as wheel and axle.
Reply
Old Jun 19, 2010 | 08:50 PM
  #6  
Stephen's Avatar
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: What's the widest tire?

275/40RZ17s on 17" x 9"/5" bs front.....

315/40ZR17s on 17" x 11"/7"bs rear.....

But the rear required tubular LCAs with the offset bushings/adjustable panhard bar/inner sheetmetal cutting/e-brake bracket cutting.....It wasn't real easy, but well worth it to keep them completely under the fenders!
Reply
Old Jun 20, 2010 | 09:39 AM
  #7  
breynolds's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2008
Posts: 179
Likes: 0
From: Des Moines, Ia
Car: 91 Firechicken
Engine: 355ci SBC
Transmission: 97GM BW T-56
Axle/Gears: 9", Moser 31 Splines 3.73s Trac Loc
Re: What's the widest tire?

We'll be talking soon on your setup. That's pretty much what I'm wanting.
Reply
Old Jun 20, 2010 | 09:48 AM
  #8  
Stephen's Avatar
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: What's the widest tire?

https://www.thirdgen.org/forums/whee...els-315-a.html
Reply
Old Jun 20, 2010 | 10:43 AM
  #9  
Badass355ciz28's Avatar
Supreme Member
iTrader: (17)
 
Joined: Nov 2005
Posts: 1,104
Likes: 2
From: Leicester,Massachusetts
Car: 1983 CHEVROLET CAMARO Z28
Engine: Forged 355 with a GT45 turbo
Transmission: TKO 600
Axle/Gears: built 4th gen rear with 3.27s
Re: What's the widest tire?

ahh my old wheels def look good painted like that stephen
Reply
Old Jun 20, 2010 | 10:52 AM
  #10  
Stephen's Avatar
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: What's the widest tire?

Originally Posted by Badass355ciz28
ahh my old wheels def look good painted like that stephen
I had them powdercoated to match my fronts that I already had, after I had them widened from 9" to 11".
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
LiquidBlue
Wheels and Tires
32
Dec 10, 2019 04:06 PM
mattcanty
Firebirds for Sale
4
Oct 12, 2015 11:08 AM




All times are GMT -5. The time now is 02:28 AM.