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summit stars sticking out too much?

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Old 09-10-2010, 12:15 PM
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Default summit stars sticking out too much?

I bought some summit stars 15x8 they rim is almost flush with the rear couter but with the tires on they stick out a probably 1/2 inch maybe a inch. Im worried about messing my couter up at the track, should i look at going with some air shocks or something or do you think i might be fine.
Old 09-10-2010, 12:22 PM
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what b/s did u get?
Old 09-10-2010, 12:33 PM
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it was supposed to be a 5.5 dude told me it was for fbody backspacing. he might have just lied to me idk.
Old 09-10-2010, 12:41 PM
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i had a friend with some 15x8 and 5.5 bs and 275/50 tires and they didnt stick out any. u may wanna take a look a ur bs
Old 09-10-2010, 12:49 PM
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^yeah, i guess ill do that. thanks
Old 09-10-2010, 01:04 PM
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took a measurement and it looks to be a 5.5... so idk
Old 09-10-2010, 04:33 PM
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Post up some pics of how it looks. Your car looks pretty low...do you an adjustable panhard bar?? if not that could be the issue.
Old 09-10-2010, 04:41 PM
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I would also check the part number on Jegs or Summit website to make double sure they are 5.5 and not 4.5.

Do they stick out the same on both sides?
Old 09-13-2010, 08:06 PM
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5.5 on an 8" wheel will stick out further than a 7.5" on a 10" wheel. The tire itself will center differently in the fender on that wheel (stick out more). For the tire tread to sit in the same location as the 10" wheel, you'd need a 6.5" backspace, which is not offered.

I wouldn't use an 8" wheel anyways; its too small for most tires people run and doesn't offer the stability a 10" wheel would with the same size tire.

Unfortunately, the wheel is yours now if you mounted them. At least they were inexpensive. Wheel manufactures/vendors do not take returns on mounted wheels.

Roll your fenders and center the wheels with an adjustable panhard rod (if the wheels are not centered) if you're concerned.
Old 09-14-2010, 12:59 AM
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Originally Posted by SJMMFGINC
5.5 on an 8" wheel will stick out further than a 7.5" on a 10" wheel. The tire itself will center differently in the fender on that wheel (stick out more). For the tire tread to sit in the same location as the 10" wheel, you'd need a 6.5" backspace, which is not offered.

I wouldn't use an 8" wheel anyways; its too small for most tires people run and doesn't offer the stability a 10" wheel would with the same size tire.

Unfortunately, the wheel is yours now if you mounted them. At least they were inexpensive. Wheel manufactures/vendors do not take returns on mounted wheels.

Roll your fenders and center the wheels with an adjustable panhard rod (if the wheels are not centered) if you're concerned.
I don't agree with the 8 inch wheel not working with 5.5. There is a ton of cars out there with this setup that doesn't stick out. I ran a 15X8 Prostar with 5.5 backspace, 275/50/15 and a small spacer and they didn't stick out.
Old 09-14-2010, 06:10 AM
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Originally Posted by NovaCain383
I don't agree with the 8 inch wheel not working with 5.5. There is a ton of cars out there with this setup that doesn't stick out. I ran a 15X8 Prostar with 5.5 backspace, 275/50/15 and a small spacer and they didn't stick out.
That wasn't my point. Your wheel that you're using will stuck out the same amount as the poster's setup. It was ok for you, but obviously not for him. The wheel will stick out further than a 10" wheel with a 7.5" backspace and it will not be as stable on the street/track using the same typical 275mm or larger tire everyone is using.

Many people do things for different reasons some are not aware of differences or don't care. It doesn't make it right or wrong.
Old 09-14-2010, 02:01 PM
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If your car is lowered it might be because the rearend is shifted. Is it sticking out farther on 1 side than the other? Mine did when I lowered my car but I just fixed it with my adj. Panhard.
Old 09-14-2010, 05:34 PM
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Originally Posted by SJMMFGINC
5.5 on an 8" wheel will stick out further than a 7.5" on a 10" wheel.

please explain how if you add two inches to a wheel, only on the inner barrel, its going to stick out farther?
Old 09-14-2010, 05:50 PM
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Originally Posted by Tally TransAm
please explain how if you add two inches to a wheel, only on the inner barrel, its going to stick out farther?
You didn't correctly read what he said. What you just said, is opposite of what you quoted. He said adding two inches to the wheel will make it tuck under further.
Old 09-14-2010, 05:56 PM
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Is this what you mean(as far as sticking out)? These are Summitt Stars 15x8 w/5.5 BS 275/50/15's..
http://www.fquick.com/garages/viewga...wimg&id=133881

No issues at the track..
Old 09-14-2010, 06:00 PM
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Originally Posted by Camaro396
You didn't correctly read what he said. What you just said, is opposite of what you quoted. He said adding two inches to the wheel will make it tuck under further.
i completely understand that it will tuck in the wheel well more, that is what backspace is. but it certainly wont stick out further. you are only adding the wheel width behind the mounting pad, which means the relationship with the outer fender will be the same

both here

5.5 on an 8" wheel will stick out further than a 7.5" on a 10" wheel.
and here

Your wheel that you're using will stuck out the same amount as the poster's setup. It was ok for you, but obviously not for him. The wheel will stick out further than a 10" wheel with a 7.5" backspace
he states a 15x8 with a 5.5" BS will stick out further than a 15x10 with a 7.5" BS

that is not true.

if your referring to "centering" in the wheel well than a 15x8 would need a 6.5" backspace to maintain the same offset, but that will pull the outer edge of the 15x8" an inch more inside the fender than a 15x10", not keep it the same

a 15x8 with a 5.5" BS may look like is sticks out more than a 15x10 with a 7.5" BS, but the relationship between the outer edge of the wheel and the outer fender will be the same, the variance will be on the inner edge

Last edited by Tally TransAm; 09-14-2010 at 06:10 PM.
Old 09-14-2010, 07:58 PM
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Tally,

No one is perfect, I make mistakes but I am 100% correct regarding my analysis. I'll explain why for you and others who may be interested. Many folks believe what you're trying to explain as well, so you're not alone. But it is a misconception and incorrect.

If you want the TIRE to stay in the same location you need to remove equal amounts of inner and outer shell material. It doesn’t matter what size wheel you’re converting to. What you're doing is essentially pinching the inner and outer bead area moving the wall at an inward angle but the tire tread or contact patch area is staying in the same spot.

If you only move one shell component, as in the case of the 8" wheel with 5.5" backspace, the tire will re-center on the wheel and move the contact patch. You are correct that the outer shell sits in the same spot.

The outer wheel location is not important. What is important (if one likes how a particular tire is positioned) is that the tire doesn't move. …Since the 8" wheel's inner moved and not the outer shell, the tire re-centers outward 1/2 the distance. Therefore, the 8" wheel will not only "look" like the tire sticks out ~1” more than the 10" wheel it does. I say ~1" since the sidewall encroaches the tread area slightly and shrinks it. Needless to say, it is moving it 1/2 the distance though.

Hope this clears up your misconceptions.

Good luck!
Old 09-14-2010, 08:41 PM
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i understand, you were referring to the tire, i was referring the wheel.
Old 09-14-2010, 09:26 PM
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My mistake, I should have written more precise. It is a huge mistake for people posting that choosing a 10 w/7.5" is the same as an 8 wi/5.5" and will net the same results with only just a smaller wheel.
Old 09-14-2010, 11:27 PM
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Im pretty much dumb, I just finger tightend them and went ahead and got the impact out and it knocked them in a little more.. It doesnt bother me as much now, I still need to roll the fenders though.



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