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Suspension / Chassis Questions about your suspension? Need chassis advice?

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Old 10-15-2000, 02:45 PM   #1
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need help with fitting FR18s simmins wheels on my iroc

Thats right i've finaly decided to get the best wheels on the market. I have an 89 iroc with a 4th gen rear. The rear is sopost to be 4 inches total wider, right know my iroc wheels stick out about 2 inches on each side. I want to put 18x11 on the back. How should i measure for room? I know i can put 17x11 zr-1 wheels on the back without spacers so don't tell me you can't do it. I'am also going to run 18x9.5 up front and they can build them so they bolt on. These are a simmons FR18 3 piece wheel that is built to your specs. I'am also going to get bell teck spindles to drop the front and use my iroc springs. I will post some pics this week of my car.
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Old 10-16-2000, 08:32 PM   #2
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I'm running 18 by 10s all around on my IROC with a 5" back spacing. I believe the rear spacing on the ZR-1 rims r 6", so if they fit ur car fine stick with that spacing size or use a 7" spacing. As 4 the fronts use 4 1/2" or 5" depending on how u want the rims 2 sit in the wheel wells.
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Old 10-17-2000, 01:09 AM   #3
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Do you have any pics of those wheels?
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Old 10-17-2000, 09:08 AM   #4
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Yeah,


[This message has been edited by Cntrvrsy (edited October 17, 2000).]

[This message has been edited by Cntrvrsy (edited October 17, 2000).]
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Old 10-17-2000, 01:28 PM   #5
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thats sharp, i think we need more 3rd gen cars with 17s-18s
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Old 10-17-2000, 03:14 PM   #6
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I agree, so many factory cars r coming with 17s and up that 16s r starting 2 look like spare tires.
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Old 10-17-2000, 04:04 PM   #7
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Superiroc,
Which distributor are you buying the wheels from (web site)?

Thanks, Dave '91 T/A
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Old 10-17-2000, 06:50 PM   #8
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groupawheels.com they take about six weeks to build the wheels.
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Old 10-18-2000, 04:42 PM   #9
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Car: 1990 IROC-Z (De-Badged-Carbon Hood)
Engine: Superram 383
Transmission: T-56 w/upgraded Viper Internals
Axle/Gears: 3.73 18x8 and 18x11 irocs

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Hey,
I'd love to see a picture of those Simmons 18's. I was also going to buy those rims! Here's my baby with 18' IROC's- Ain't she purrty!

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Old 10-18-2000, 04:44 PM   #10
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Car: 1990 IROC-Z (De-Badged-Carbon Hood)
Engine: Superram 383
Transmission: T-56 w/upgraded Viper Internals
Axle/Gears: 3.73 18x8 and 18x11 irocs

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Send a message via AIM to Mr. IROC-Z
ooops! Here she is:

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Old 08-12-2001, 06:31 PM   #11
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contrvrsy - what springs did you use to lower your car? looks sweet!
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Old 08-12-2001, 06:31 PM
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