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Will these fit? 18" on iroc

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Old Aug 6, 2015 | 06:10 PM
  #1  
87iroctheo's Avatar
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Posts: 164
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From: Saskatchewan, CANADA
Car: 87 IROC
Engine: 5.7L LT1
Transmission: T56
Axle/Gears: 3.27
Will these fit? 18" on iroc

I found seem rims I would like to run on my 87 iroc. They are currently on a 95 z28 so I figure the bolt pattern is the same, it's the offset and the rubbing that worries me. My car has a eibach sportline spring kit in it, which lowers the front 1.6" and the rear 1.3". Here is the info....fronts are 275/40/18s Backs are 305/35/18s and they come with Mickey Thomson ET street radials. They are corvette replica rims. Will they fit without rubbing?



Last edited by 87iroctheo; Aug 6, 2015 at 08:05 PM.
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Old Aug 27, 2015 | 12:09 AM
  #2  
NORTz89's Avatar
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Joined: May 2006
Posts: 70
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From: FT. Collins/Loveland
Car: 1989 IROCz
Engine: 5.3l LM7 Gen3
Transmission: 4l60
Axle/Gears: 10bolt auburn posi 3.42
Re: Will these fit? 18" on iroc

Should with 2" spacers.
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Old Aug 27, 2015 | 02:44 AM
  #3  
RamIt's Avatar
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Joined: Jun 2013
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From: El Sobrante, California
Car: 1984 z28
Engine: Crate replacement L31R 350
Transmission: T56
Axle/Gears: 7.625" 28 spline 3.23
Re: Will these fit? 18" on iroc

Originally Posted by 87iroctheo
Will they fit without rubbing?
No.

The tire's are to big even with spacers they will rub at least in the front.
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Old Aug 27, 2015 | 12:14 PM
  #4  
Buggy Disaster's Avatar
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Joined: Mar 2012
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From: Georgia
Car: 91' Z28. 70' Dune Buggy
Engine: LSX Cam/Full Bolt ons
Transmission: T56
Axle/Gears: 4.10
Re: Will these fit? 18" on iroc

They should fit. I have a similiar wheel in the front, a 285/35/19, and it rubs at full lock, but my car is lowered alot.
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Old Aug 29, 2015 | 09:42 PM
  #5  
87iroctheo's Avatar
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Joined: Dec 2014
Posts: 164
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From: Saskatchewan, CANADA
Car: 87 IROC
Engine: 5.7L LT1
Transmission: T56
Axle/Gears: 3.27
Re: Will these fit? 18" on iroc

Believe it or not they work front and back without any modifications at all! I tried 2 inch and 1.25" spacers. Both worked without rubbing. The closest point for rubbing is inner fender of the front wheel. I could. It believe that the 1.25" spacer worked. I think it's because the car was lowered that it has the ability to clear the strut. Kind of a bonus for me anyways after installing these tires because they are a little taller than my factories, I gained 1/2" clearance under the car but kept my tight fender to wheel gap. This is good for me because I've been trying to get my lng tube header y pipe to work and that .5" sounds minimal but actually that makes a big difference! I am going to exchange the 1.25" for 1.5" just because the dust cap is only slightly preventing my Center caps on the from rims from clipping in place. Also I think I would like a little more stick out than what I have. Here are some pics of the 2 spacers, 1.25" and 2".
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Old Aug 29, 2015 | 09:44 PM
  #6  
87iroctheo's Avatar
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Joined: Dec 2014
Posts: 164
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From: Saskatchewan, CANADA
Car: 87 IROC
Engine: 5.7L LT1
Transmission: T56
Axle/Gears: 3.27
Re: Will these fit? 18" on iroc




2" spacer





1.25" spacer





2" spacer





1.25" spacer
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