Iroc wheels

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antysmithers

Not-quite-so-new-guy
Jul 24, 2008
15
0
0
Tarentum, PA
i got 15 inch Z-28 wheels on my malibu im runing 245-60's on the back and 215-65's on the front. btw,i work at a tire shop, and most aluminum wheels have that symbol on them, no idea what it means.
 

Ribbedroof

Comic Book Super Hero
Supporting Member
Jan 4, 2009
4,968
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Wellston, OK
Re:

85 Cutlass Brougham said:
Those are NOT IROC-Z wheels. They are Z-28 or RS wheels. IROC-Z's came with 16's, not 15's.

Incorrect

Standard IROC wheel for '88, '89 and '90 was a 15" wheel. The one shown is in fact the standard IROC wheel for 1988. '89 and '90 used a 15" version of the available 16" wheel. 85-87 came with 16s standard, and they were available in 88, 89, and 90, but were not standard equipment.

The mark is the foundry identifier.
 

78 Green Lemans

Apprentice
Aug 15, 2009
94
2
0
Penticton BC Canada
Those i believe are the z28/RS wheels as stated earlier, the same set came on my 84 z28, my 85 iroc has the 16's and these are the 15's that were available on some years..................
283jimmyruns.jpg
 

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Clutch_Grabwell

Greasemonkey
Jun 5, 2007
218
9
18
Millbury, Mass.
Re:

jrm81bu said:
Here's a shot of mine. They are factory Iroc rims. I'm running 1in spacers on the rear. They have 245/50R16 all the way around. They rub slightly in the front at full lock if I hit a bump.
Ditto. The 'rear' wheels were previouly mounted on the front while the 12" B-body brakes were on the car. After switching to ZQ8 spindles the rear wheels moved the the rear axle with adapters.
DSCN0104.jpg
 

Ribbedroof

Comic Book Super Hero
Supporting Member
Jan 4, 2009
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Wellston, OK
78 Green Lemans said:
Those i believe are the z28/RS wheels as stated earlier, the same set came on my 84 z28, my 85 iroc has the 16's and these are the 15's that were available on some years..................
283jimmyruns.jpg

Yes, they are the Z28/RS wheel, and they are the standard IROC wheel for '88 as well. I should have made that point in my previous post, which was to dispel the common notion that IROCs all came with 16" wheels. The 89/90 15" IROC wheels are pretty scarce these days.
 

khan0165

Royal Smart Person
Jul 14, 2008
1,617
16
38
Ontario, Canada
here are mine,
I have an 8.5 GN rear, and so I need a 1/2" spacer in back, and a 1"spacer up from, for my 245/50R16 tires.

this picture is from last year, where the wheels were gold still...
DSC05191.jpg


the wheels have since then been polished and painted charcoal black, and look something like this...
100_5855.jpg
 
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