GN and T-Type Performance Enthusiasts (GNTTYPE) Forums GN and T-Type Performance Enthusiasts (GNTTYPE) Forums
This is a general site search and does not include list archives.

Go Back   GN and T-Type Performance Enthusiasts (GNTTYPE) Forums > Technical Topics > Wheels/Tires

Reply
 
Thread Tools Display Modes
  #1  
Old 02-15-2006, 12:07 AM
Barbee Barbee is offline
New Member
 
Join Date: Sep 2004
Posts: 22
Barbee is on a distinguished road
Default tire size help

I have an 84 GN what is the biggest size tire I can fit in there with out lifting the back end?right now I have 215's all the way around
Reply With Quote
  #2  
Old 02-15-2006, 02:58 AM
Keller's Avatar
Keller Keller is offline
GNTTYPE Founder
 
Join Date: Jul 2004
Location: Missouri
Posts: 9,424
Keller is on a distinguished road
Lightbulb Re: tire size help

Jack it higher? This isn't the 70's!

On stock 7" wheels - 235/60-15

On 8" or 8.5" wheels - 275/50-15

On TA "GNX style" 16" wheels - 245/50-16 all around, or 255/50-16 on the rear.

Other size wheels - it depends. If you notch the frame or roll/remove the trim, you can fit more tire.
__________________
Scott Keller - GNTTYPE Founder & Moderator
Reply With Quote
  #3  
Old 02-15-2006, 10:07 AM
PaCemkr86's Avatar
PaCemkr86 PaCemkr86 is offline
Tech Support
 
Join Date: Jan 2005
Location: Texas
Posts: 4,817
PaCemkr86 is on a distinguished road
Send a message via AIM to PaCemkr86
Default Re: tire size help

do you have to roll the fenders to fit 275-60-15 on 8 inch rim
with 3.5 backspace?
Reply With Quote
  #4  
Old 02-15-2006, 10:12 AM
kenmosher's Avatar
kenmosher kenmosher is offline
Whoosh
 
Join Date: Aug 2004
Location: CO
Posts: 3,984
kenmosher is on a distinguished road
Default Re: tire size help

... on most cars with most tire brands, yes. Some tire brands tend to have a "straighter" sidewall and can sneak in with minimal rubbing if you have a bit more backspace (3 3/4" say).
__________________
Ken Mosher
1987 GN original owner 650+ HP Black
2015 BMW 328xi XDrive wagon
2012 Volkswagen Tiguan (the Tig!) Night Blue Met (sold)
2006 Trailblazer SS Red Jewel Tint 395 HP AWD (sold)
2014 Silverado LTZ Crew 4WD
2012 Honda VFR 1200F Tahitian Blue (sold)
2015 BMW S1000R Racing Red
2013 Honda CBR500R Red (wife's bike)
2014 Triumph Bonneville T100
2003 Harley Davidson V Rod Anniversary Edition
Reply With Quote
  #5  
Old 02-15-2006, 12:57 PM
Keller's Avatar
Keller Keller is offline
GNTTYPE Founder
 
Join Date: Jul 2004
Location: Missouri
Posts: 9,424
Keller is on a distinguished road
Lightbulb Re: tire size help

275/60-15 on an 8"? I would think not if you have good backspacing. The 60's are actually a bit thinner due to profile, and the 8" wheels are narrower than 8.5" wheels. I have 275/50's on 8.5" wheels (sit a bit 'squat-er') with only 3.5" backspace, and I'm getting by. No rolled lips or removed trim. But I'd really like a 4" backspace to feel more comfortable.
__________________
Scott Keller - GNTTYPE Founder & Moderator
Reply With Quote
  #6  
Old 02-15-2006, 02:05 PM
PaCemkr86's Avatar
PaCemkr86 PaCemkr86 is offline
Tech Support
 
Join Date: Jan 2005
Location: Texas
Posts: 4,817
PaCemkr86 is on a distinguished road
Send a message via AIM to PaCemkr86
Default Re: tire size help

i wanting to run a 28inch tall tire for my street driving " hence 275-60-15-"
since i installed my Th 400 in my ttype.

I guess i need to check and see if i can get a weld draglite with 4inch back
space.

The GN was 8inch Bogart rims with 4inch back space and tucks nicely
with 26x10.5
Reply With Quote
  #7  
Old 02-15-2006, 02:21 PM
Keller's Avatar
Keller Keller is offline
GNTTYPE Founder
 
Join Date: Jul 2004
Location: Missouri
Posts: 9,424
Keller is on a distinguished road
Lightbulb Re: tire size help

Quote:
Originally Posted by PaCemkr86
I guess i need to check and see if i can get a weld draglite with 4inch back
space.
Think someone locally found that by flipping over a 3.5" backspace and polishing the unpolished side, they got what they needed.
__________________
Scott Keller - GNTTYPE Founder & Moderator
Reply With Quote
  #8  
Old 02-15-2006, 04:56 PM
zeus87gn's Avatar
zeus87gn zeus87gn is offline
Senior Contributor
 
Join Date: Aug 2004
Location: Georgia
Posts: 207
zeus87gn is on a distinguished road
Default Re: tire size help

Quote:
Originally Posted by Keller
On stock 7" wheels - 235/60-15
I have 255/60/15 on my stock wheels with no modifications to anything. Fit is just fine and doesn't rub on anything. The only drawback I have found is that they are a bit wobbly on that narrow rim. I have plans for 8" rims in the future.
__________________
87' Jeep Wrangler - 'Frankenstein'
87' Grand National - 'Zeus' - 200K miles
Reply With Quote
  #9  
Old 02-15-2006, 06:20 PM
Barbee Barbee is offline
New Member
 
Join Date: Sep 2004
Posts: 22
Barbee is on a distinguished road
Default Re: tire size help

I have the stock rim size 15x7's on it with 215's and wanted to put 245's or 255's on the back, will they fit? I'm thinking about lifting the back up a little bit with maybe 7/16 spacer.
Reply With Quote
  #10  
Old 02-15-2006, 06:42 PM
Keller's Avatar
Keller Keller is offline
GNTTYPE Founder
 
Join Date: Jul 2004
Location: Missouri
Posts: 9,424
Keller is on a distinguished road
Exclamation Re: tire size help

Quote:
Originally Posted by zeus87gn
The only drawback I have found is that they are a bit wobbly on that narrow rim.
I don't consider 'wobbly' to be acceptable. Nor something that throws the speedo off calibration (and thus the ECM's view if how fast you are going) as acceptable. *shrug* Call me picky...
__________________
Scott Keller - GNTTYPE Founder & Moderator
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 08:00 AM.


This page maintained by: gnttype-webmaster@gnttype.org

The content, images, text and multimedia displayed and contributed by the members of the Grand National and T-Type Performance Enthusiasts Organization are Copyright ©1996-2005. No part, section, image, article or whole of this site may be reposted or redisplayed without permission of the author/contributor and/or the Grand National and T-Type Performance Enthusiasts Organization.

Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.