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Old 08-14-2006, 10:59 AM   #1
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Location: Europe
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Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: TH700
Axle/Gears: 3:27

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Rims - Convo Pro's on a IROC-Z?

Hi.
About rims, Center Line Convo Pro, 15in.

Any of you have any experience with Convo Pro's on a IROC-Z?

Do they have any 15in-size that would fit?

How about this:
Front: 215/60/15 (15in x 6in)
Back: 245/60/15 (15in x 8in or 15in x 8,5in ?)

Any suggestion?
Thanks for any help!
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1987 IROC-Z, T-top, -02 SS Ebony leather seats, front & rear.
305 TPI - TH700R4 - B-W 9-bolt Posi 3:27 - WELD ProStar 15x6 and 15x10.
Crane 214*/220*-112*, Pro Mag 1.52 R.R, Hooker Super Comp., Flowmaster 3" Cat-back.
Custom Chip, Ported plen./run./mani., "Ram-Air", Airfoil, Holly AFPR. 180*F, FS 200*-185*
-->> A.C., Cat. and A.I.R deleted.
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Old 08-14-2006, 02:02 PM   #2
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Welcome to Thirdgen!

I run them at the track on my Formula. 15x8.5, with 5" B/S in the rear, and 15x4 in the front. I would not use them on a driver though. One pothole, and they will be trashed.

8.5s would be better in the rear, IMO. Make sure you get the correct B/S, or they will look out of place.
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Old 08-14-2006, 06:39 PM   #3
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Location: Katherine, Australia
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Car: 1990 Camaro IROC-T
Engine: L98 Turbo (GT40)
Transmission: THO400
Axle/Gears: Forged axles, 3.23 rear

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Here a couple of shots of mine. Ive had them for ages now. I run 15x7 front and 15x8.5 up back. Cant remember the back spacing tho...

Click the image to open in full size.

Click the image to open in full size.
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Old 08-15-2006, 07:10 AM   #4
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Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: TH700
Axle/Gears: 3:27

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Thanks "brutalform"!
As I can see ( Centerline Wheels ) theres only one current BS at 15x8,5 rims. BS=5".
Would Weld Pro Stars be a better choice, or are they the "same" strength?

Raven90IROC, what is your rim size front and back? Any rubbing?
And what is your suspension setup (springs) ?

Thanks.
Nice cars you have!
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1987 IROC-Z, T-top, -02 SS Ebony leather seats, front & rear.
305 TPI - TH700R4 - B-W 9-bolt Posi 3:27 - WELD ProStar 15x6 and 15x10.
Crane 214*/220*-112*, Pro Mag 1.52 R.R, Hooker Super Comp., Flowmaster 3" Cat-back.
Custom Chip, Ported plen./run./mani., "Ram-Air", Airfoil, Holly AFPR. 180*F, FS 200*-185*
-->> A.C., Cat. and A.I.R deleted.
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Old 08-15-2006, 12:28 PM   #5
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IIRC, Weld wheels are a bit lighter than the Convos, and they are available with 5.5" B/S, which is better for our cars than 5". I was going to get Welds but I liked the Convo design a little better, so I went with those instead.
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Old 08-16-2006, 11:51 AM   #6
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Join Date: Jun 2005
Location: ENGLAND
Posts: 37
Car: 83 CAMARO 468BBC
Engine: 9.84 @ 138mph street driven
Transmission: TH 400
Axle/Gears: ford 9" 3.70 gears

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I have 15x 8 with 5.5" back space on my 83 they look great I have some pics if I knew how to attach them !!
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9.84 @ 138mph STREET DRIVEN full weight 9" tire !! www.cardomain.com/ride/2433863
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Old 08-21-2006, 12:47 PM   #7
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Location: RI
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Car: 1988 IROC-Z
Engine: ZZ502
Transmission: TURBO 400
Axle/Gears: DANA WITH 410 GEARS

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Car looks awesome, what size are the rear tires?
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Old 08-22-2006, 02:55 AM   #8
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Car: 83 CAMARO 468BBC
Engine: 9.84 @ 138mph street driven
Transmission: TH 400
Axle/Gears: ford 9" 3.70 gears

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Thanx mate I am running 8.5" convo-pro's with 28 x 9.0 x15 slicks Traction IS an issue but I have trouble running a bigger tyre as the arch comes down so hard on launch it tends to hit anything bigger
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Old 08-25-2006, 03:29 PM   #9
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Car: 1987 IROC-Z
Engine: 305 TPI
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Axle/Gears: 3:27

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rat infested, are you running 8" or 8.5" ?
Where can I find pic's of your car?

IROCZZ502, what size are your Draglite's?


Thanks.
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1987 IROC-Z, T-top, -02 SS Ebony leather seats, front & rear.
305 TPI - TH700R4 - B-W 9-bolt Posi 3:27 - WELD ProStar 15x6 and 15x10.
Crane 214*/220*-112*, Pro Mag 1.52 R.R, Hooker Super Comp., Flowmaster 3" Cat-back.
Custom Chip, Ported plen./run./mani., "Ram-Air", Airfoil, Holly AFPR. 180*F, FS 200*-185*
-->> A.C., Cat. and A.I.R deleted.
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Old 08-25-2006, 07:05 PM   #10
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Join Date: Aug 2006
Location: RI
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Car: 1988 IROC-Z
Engine: ZZ502
Transmission: TURBO 400
Axle/Gears: DANA WITH 410 GEARS

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My Draglites are 15x8 with a m/t 26x10.5, but this tire on an 8 inch rim is only about 9 inches wide, I want to put a bigger tire size like a hoosier QTP 27x11.5,but i'm not sure if the tire will fit.
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Old 08-27-2006, 02:55 AM   #11
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Join Date: Jun 2005
Location: ENGLAND
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Car: 83 CAMARO 468BBC
Engine: 9.84 @ 138mph street driven
Transmission: TH 400
Axle/Gears: ford 9" 3.70 gears

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1987_BLUE_IROC

My wheels are 8.5" x 15" with a 5.5" backspace ( a little massaging to fit with Mickey T 295/15 tyres) ther are some pics and more details of my car at car domain try this link ( it should work) 1983 Chevrolet Camaro - Craig's Chevrolet
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Old 08-29-2006, 01:36 PM   #12
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Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: TH700
Axle/Gears: 3:27

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As I can see from Center Line's web site, Convo Pro's can be ordered at this size/backspace:
15x8.0" --> BS 4.5"
15x8.5" --> BS 5.0"
15x9.0" --> BS 6.5"

Right?

So if I want Convo's 15x8.5"-bs5 is the way to go?

Prostar and Draglite can be ordered as 15x8"-bs5.5 I think.

Hard to decide what to choose... Convos, Prostar or Draglite...

Anyway, Thanks for all replys!
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1987 IROC-Z, T-top, -02 SS Ebony leather seats, front & rear.
305 TPI - TH700R4 - B-W 9-bolt Posi 3:27 - WELD ProStar 15x6 and 15x10.
Crane 214*/220*-112*, Pro Mag 1.52 R.R, Hooker Super Comp., Flowmaster 3" Cat-back.
Custom Chip, Ported plen./run./mani., "Ram-Air", Airfoil, Holly AFPR. 180*F, FS 200*-185*
-->> A.C., Cat. and A.I.R deleted.
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Old 08-30-2006, 02:38 AM   #13
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Car: 2004 Pontiac GTO
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Transmission: T56
Axle/Gears: IRS 3.46

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IMO id go with the draglites...They're just real good looking and on a camaro im sure it would look a hell of a lot better.
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Old 08-31-2006, 08:39 AM   #14
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Join Date: Nov 2002
Location: Katherine, Australia
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Car: 1990 Camaro IROC-T
Engine: L98 Turbo (GT40)
Transmission: THO400
Axle/Gears: Forged axles, 3.23 rear

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Convo Pros FTW!!!

Click the image to open in full size.

:P
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Old 09-01-2006, 06:50 AM   #15
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Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: TH700
Axle/Gears: 3:27

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Like it! Very nice !

What are your tire setup (front & rear), and springs ?
__________________
1987 IROC-Z, T-top, -02 SS Ebony leather seats, front & rear.
305 TPI - TH700R4 - B-W 9-bolt Posi 3:27 - WELD ProStar 15x6 and 15x10.
Crane 214*/220*-112*, Pro Mag 1.52 R.R, Hooker Super Comp., Flowmaster 3" Cat-back.
Custom Chip, Ported plen./run./mani., "Ram-Air", Airfoil, Holly AFPR. 180*F, FS 200*-185*
-->> A.C., Cat. and A.I.R deleted.
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Old 09-02-2006, 09:09 AM   #16
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Join Date: Jun 2005
Location: ENGLAND
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Car: 83 CAMARO 468BBC
Engine: 9.84 @ 138mph street driven
Transmission: TH 400
Axle/Gears: ford 9" 3.70 gears

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Dear 1987_BLUE_IROC I am a dumbass I was getting mixed up with the wheel size I am running 8.5" x 15" x 5" back space !!! While I'm on does anone know if I can run a bigger slick than my M/T 28" x 9" x 15"'s I was looking at a 10.5" tyre (oops sorry forgot you guys spell it different TIRE) . but I cant take anymore metal out behind the wheel or off my arches Any Ideas ??
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Old 09-04-2006, 10:16 AM   #17
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Location: Katherine, Australia
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Car: 1990 Camaro IROC-T
Engine: L98 Turbo (GT40)
Transmission: THO400
Axle/Gears: Forged axles, 3.23 rear

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Quote:
Originally Posted by 1987_Blue_IROC View Post
Like it! Very nice !

What are your tire setup (front & rear), and springs ?
In that pic im running 235s up front (cant remember the wall size) with K-mac 1.5" lowering springs and 275/60/15s up back with K-mac standard high springs and HD shocks.
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Old 09-04-2006, 10:16 AM
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