Pontiac GTO 2004-2006 The Modern Goat

Buying wheels, but need help

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Old 08-27-2012, 08:20 PM
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Default Buying wheels, but need help

I am going to buy front and rear rims. I am going with Weld Racing ProStars from summit. I want skinnies in the front and and a nice set up in the back. I want to know what bolts I will need and the exact tire/rim sizes I will need with out any rubbing. I have a stock suspension rear and front. No drag bags.
Can I do this set up?15x3.75 with 1.5 backspace. 5x4.75 lug patern in front and rear it will be 15x10 with 7.25 backspace 5x4.75 lugs

Bolt sizes?
Spaceing?
Size diameter?
Old 08-27-2012, 11:20 PM
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So you're putting drag wheels/tires on it, but don't have drag bags? Then what's the point?
Old 08-28-2012, 08:32 AM
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I think without any mods to the rear quarters you can only go with a 9" wide rim...I'm running 18.5" wide 15's, but that took a LOT of cutting lol
Old 08-28-2012, 09:31 AM
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OP you're going to need to completely roll your fenders and maybe some BFH on the inside wells. Also drag bags will help.

I'm running 18.5" wide
18.5" wheels? What are you running like 535s out back?
Old 08-28-2012, 09:34 AM
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lol your wheels are wider than a Honda's are tall
Old 08-28-2012, 09:39 AM
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Originally Posted by redtan
18.5" wheels? What are you running like 535s out back?
I guess you haven't seen this thing yet...****. Is. Crazy! Sift through this>https://ls1tech.com/forums/pontiac-g...er-diet-2.html.
Old 08-28-2012, 10:06 AM
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Dang must've missed that thread
Old 08-28-2012, 10:56 AM
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The fronts will work.
The rears, you'll need to do some work. Hammering, remove dust shield for the rear shock.

You'll need longer studs for the front or rear, cant remember. I replaced all of mine.

As far as lugs go, the jegs/summit version of the prostars has a conical seat to them so you can just reuse your stock lugs instead of ******* around with shanks.

The best thing for the rears would be a 15x8 5.5 BS.
Even better than that would be a 15x9 with a 6.75 BS but thats not offered on thise wheels.
Old 08-29-2012, 06:11 AM
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Originally Posted by redtan


18.5" wheels? What are you running like 535s out back?
Told you it took a little cutting lol

Right now have 31-18.5 15's, but built the car/ wheels for 33-21.5 15's.
Old 08-29-2012, 09:27 AM
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Originally Posted by thehazz12
So you're putting drag wheels/tires on it, but don't have drag bags? Then what's the point?
I am willing to buy drag bags, but if I can run with out them that be better. Thats why I asked, thanks.
Old 08-29-2012, 09:28 AM
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Originally Posted by thehazz12
I guess you haven't seen this thing yet...****. Is. Crazy! Sift through this>https://ls1tech.com/forums/pontiac-g...er-diet-2.html.
first thing I saw when I made an account on this site, its a lot of work on that. front to rear.
Old 08-29-2012, 09:31 AM
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Originally Posted by gconnoyer
The fronts will work.
The rears, you'll need to do some work. Hammering, remove dust shield for the rear shock.

You'll need longer studs for the front or rear, cant remember. I replaced all of mine.

As far as lugs go, the jegs/summit version of the prostars has a conical seat to them so you can just reuse your stock lugs instead of ******* around with shanks.

The best thing for the rears would be a 15x8 5.5 BS.
Even better than that would be a 15x9 with a 6.75 BS but thats not offered on thise wheels.
Ok, cool I will work on getting the fronts first if that size I said will work. Yeah, where can I find those studs, just from jegs or summit?
Old 08-29-2012, 09:32 AM
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Originally Posted by mark21742
I think without any mods to the rear quarters you can only go with a 9" wide rim...I'm running 18.5" wide 15's, but that took a LOT of cutting lol
so for the rear, I can prob do the 15 x 9?
Old 08-29-2012, 11:45 AM
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Originally Posted by joeyagls1
so for the rear, I can prob do the 15 x 9?
Yes, I'm not sure off hand exact backspacing is needed but 9's will fit
Old 08-29-2012, 04:26 PM
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Yeah the studs you can get from jegs/summit

ARP #100-7708 (rear)
ARP #100-7717 (fronts)

Like I said, the 15x9 will be your best bet if youre wanting to not touch the suspension or cut the fender lip.
6.75 is what you'll need for the backspacing on those.

But again, I dont think that jegs/summit offers that on their wheels.
Old 08-29-2012, 04:27 PM
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As far as the dumbass drag bags comment....

If you really want to do it right....get some drag springs. They will help alot more than the bags.
Do both if the funds are available. I think my sprins were only like $250 and an easy hour job.
Old 08-29-2012, 07:44 PM
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Originally Posted by gconnoyer
As far as the dumbass drag bags comment....

If you really want to do it right....get some drag springs. They will help alot more than the bags.
Do both if the funds are available. I think my sprins were only like $250 and an easy hour job.
Thanks man. I will look at pedders or bmr for some springs maybe. Yeah budget sucks right now. Thanks for the info gconnoyer!!
Old 08-29-2012, 07:45 PM
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Originally Posted by mark21742
Yes, I'm not sure off hand exact backspacing is needed but 9's will fit
Ok, this **** is more complicated have to worry about spacing rubbing etc lol.
Old 08-30-2012, 05:04 AM
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Originally Posted by joeyagls1
Ok, this **** is more complicated have to worry about spacing rubbing etc lol.
It here worse lol... Different tire companies will have slightly narrower or wider tires with the same size numbers.....like a BFGoodrich 315/40/17 might be a little different size than a Nitrous 315/40/17...one might fit, one might not.

Take some time and scroll through the older threads to see which and what fit and worked for others
Old 08-30-2012, 05:07 AM
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Also back to the spring thing.....our cars are known for rear spring sag....for instance on my 04 I got a set of Eibach 1.2" lowering springs all around and the drop springs actually raised yhe back of my car 3/4" the stock springs were so bad


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