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Puttin 4th gen firehawk rims on my car

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Old Jun 7, 2004 | 01:59 PM
  #1  
fbody83's Avatar
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From: CT
Car: 1983 firebird S/E
Engine: Built 350
Transmission: 700r4
Puttin 4th gen firehawk rims on my car

I'm putting 99 firehawk rims on my car. I was told before I'm going to need 2" spacers in the rear? Where can I get spacers and are they expensive?

The rims are 17x9's with 7" backspacing / 2" offset, bolt pattern 5 lug on 4.75" bolt, 2 11/16" center bore.

I'm putting 275/35 in the rear and 245/40 up front. Do I really NEED spacers or will they work with out them? I'm low on money!
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Old Jun 7, 2004 | 02:41 PM
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Karps TA's Avatar
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From: Muskego, WI
Car: 1985 Trans Am
Engine: 350
Transmission: T5
Axle/Gears: 3.70
You'll need spacers/adapters. No way of getting around them. Well unless you put a 4th gen rear, then you'd only need the fronts.

Theres plenty of places now selling them.

Try www.skulte.com or www.vettebrakes.com

Also check the classifieds. They turn up quite a bit on them.
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Old Jun 7, 2004 | 03:19 PM
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fbody83's Avatar
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Car: 1983 firebird S/E
Engine: Built 350
Transmission: 700r4
which ones did you use from vettebrakes?
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Old Jun 7, 2004 | 03:26 PM
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Karps TA's Avatar
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From: Muskego, WI
Car: 1985 Trans Am
Engine: 350
Transmission: T5
Axle/Gears: 3.70
I personally used 1 1/4" in back and 2 1/4" in front. That's what most were doing back in 98 when I put the wheels on originally. But I think most have gone 2" front and rear.

I bought thru Vettebrakes cause Skulte was backordered back then. I probably have the part numbers at home.
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Old Jun 10, 2004 | 10:25 PM
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From: The BayState-MA-
i think SLP sells the spacers. as for your tire sizes, i'd keep them the same. your car is going to handle wrong with those 2 sizes. the correct size that is equal to the width of the 245/50/15 is a 255...45 i believe? i'm not sure on the sidewall % but i know for sure its a 255.
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Old Jun 10, 2004 | 10:38 PM
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
There is nothing wrong with running a wider tire in the rear than up front. You just don't want to have the front tire taller than the rear. You should run 275/40 in the rear and 245/45 up front if you do not want 275's all the way around.
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Old Jun 10, 2004 | 10:44 PM
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never said there was anything wrong with it but the car will handle better with the same size all around. i used to run big ***** in the back then swapped them out for equal sizes. big difference on the off ramps
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Old Jun 10, 2004 | 10:58 PM
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Car: '90 RS
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Originally posted by 2out_The_Left
never said there was anything wrong with it but the car will handle better with the same size all around. i used to run big ***** in the back then swapped them out for equal sizes. big difference on the off ramps
Not always. The only way handeling would be compromised would be if you had a wider tire up front than out back. Now if you mean would a 9"/9" combo handel better than a 8"/9" than you would be right.
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