1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rear offset for 15x9" rims

Thread Tools
 
Search this Thread
 
Old Feb 1, 2011 | 12:15 AM
  #1  
R.P.M.'s Avatar
Thread Starter
Likes to swear....alot
Tenured Member 15 Years
iTrader: (3)
 
Joined: Dec 2002
Posts: 3,791
Likes: 3
From: Kitchener Ontario Canada
Rear offset for 15x9" rims

Going to be buying rims for my GSL-SE time attack car soon, I'd like to run 15x9" in the rear but need some advise on offset.

I have my quarters rolled and pulled slightly to accomidate a slightly aggressive fitment.

I have 16x8" with a +31 offset right now with a 255/55/16 tire. The tire just clears the inner wheel tub and just fits under the pulled/rolled outter quarter.

Help me fit a 15x9!

Thanks
Reply
Old Feb 1, 2011 | 12:33 AM
  #2  
trochoid's Avatar
Old Fart Young at Heart
Tenured Member 10 Years
iTrader: (6)
 
Joined: Apr 2004
Posts: 15,145
Likes: 8
From: St Joe MO
Ain't gonna happen w/o trimming out the wheel well lips and flares.
Reply
Old Feb 1, 2011 | 12:50 AM
  #3  
R.P.M.'s Avatar
Thread Starter
Likes to swear....alot
Tenured Member 15 Years
iTrader: (3)
 
Joined: Dec 2002
Posts: 3,791
Likes: 3
From: Kitchener Ontario Canada
Ahhh I was afraid of that...well how about 15x8's?

I'm guessing somthing like a +25-30 would fit?
Reply
Old Feb 1, 2011 | 10:49 AM
  #4  
j9fd3s's Avatar
Moderator
Community Builder
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Mar 2001
Posts: 31,835
Likes: 3,232
From: https://www2.mazda.com/en/100th/
i have a 12A car (different starting offset) with 15x7's, 15x8 would be easy.

the 15x7's have a 7 offset, 225/45/15, this put em right next to the fender, and it leaves me TONS of room on the INSIDE.

so 15x8 20 offset, 245/45/15, should sit about the same on the outside, but moves IN more, which is fine.

15x9 would be tight everywhere i think, it looks like a 15x9 would limit your tires size, if it even clears the inner frame
Reply
Old Feb 1, 2011 | 12:21 PM
  #5  
1badFB's Avatar
GSSL-SE
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Aug 2003
Posts: 1,386
Likes: 240
From: Canada
I think its definately doable!

Considering your running a 255 tire already, which is roughly 9.8" wide, a 9" wheel with the right tire shouldnt pose a problem.


I cant say exactly which tire will fit, but Im willing to bet a 9" wheel with the same offset as the current 8" would be a good starting point.
This wouldnt move the tread of the tire at all, just push the sidewalls out a bit.

I would wager that a 225/50/15 tire would work with a 15X9 +35 to +40 wheel in the back of a stock body -SE (with a roll / mild pull of course).
Reply
Old Feb 1, 2011 | 01:22 PM
  #6  
hoang5659's Avatar
Rotary Enthusiast
Tenured Member 10 Years
iTrader: (14)
 
Joined: May 2009
Posts: 753
Likes: 2
From: H-town
if you do a stretch on the tires it might work. i am running 17" mustang GT wheels on my SE (5 lug conversion). the wheels are 17x8 with an offset of +49 and i am running 245/40-17 (rear tire, fronts are 205). i have slightly rolling the quarters, which helped alittle but i still have some rubbing issues. in the rear there is close to 7" of backspacing that you can use. it will be pretty tight but it might work. good luck!
Reply
Old Mar 9, 2011 | 09:00 PM
  #7  
DMclean's Avatar
exhaust leak
 
Joined: Jun 2009
Posts: 207
Likes: 4
From: peterborough, ontario
i'm running 15x8 0 offset all around on my gsl however i have stretched tires so they fit in my fender
Reply
Old Mar 11, 2011 | 12:21 PM
  #8  
Slammed_GSL's Avatar
Rotary Enthusiast
Tenured Member: 20 Years
iTrader: (14)
 
Joined: May 2004
Posts: 1,366
Likes: 10
From: Drifting a Roundabout near you!
WA

Here's how a 9inch wheel looks and what you need to do to make them fit.
***Note*** my wheels have a slightly wider track then when these pics were taken with a 82' GSL rearend, I installed a GSL-SE rear end and had to go from 225/50/15 to a 215/50/15 tire size with a bit of stretch to clear my flares. The tire size in the pic's below are 225/50/15
And the thread on the "how to"
https://www.rx7club.com/1st-generation-specific-1979-1985-18/fender-cut-wide-wheels-pics-part1-533610/
https://www.rx7club.com/showthread.p...ghlight=flares
Attached Thumbnails Rear offset for 15x9" rims-dsc06258.jpg   Rear offset for 15x9" rims-dsc06257.jpg  
Reply
Old Mar 13, 2011 | 07:41 PM
  #9  
DMclean's Avatar
exhaust leak
 
Joined: Jun 2009
Posts: 207
Likes: 4
From: peterborough, ontario
Originally Posted by Slammed_GSL
Here's how a 9inch wheel looks and what you need to do to make them fit.
***Note*** my wheels have a slightly wider track then when these pics were taken with a 82' GSL rearend, I installed a GSL-SE rear end and had to go from 225/50/15 to a 215/50/15 tire size with a bit of stretch to clear my flares. The tire size in the pic's below are 225/50/15
And the thread on the "how to"
https://www.rx7club.com/showthread.php?t=533610
https://www.rx7club.com/showthread.p...ghlight=flares
what offset or backspace are you running on your epsilon 15x9s?
Reply




All times are GMT -5. The time now is 02:49 PM.