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15” conversion

Old 11-18-2017, 11:46 PM
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Huntervincent_6
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Default 15” conversion

I have a 07 base model c6 and I’m going to do the 15” conversion but I’m going to keep my stock base fenders, what’s the widest “ wheel” I can run if I do a 15?? Would a 15x10 be ok? Or will that he to wide for the stock fender
Old 11-19-2017, 12:22 AM
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cb1980
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depends on the offset and backspacing, the stock wheels are either 19x10 or 10.5, can't remember off the top of my head
Old 11-19-2017, 12:13 PM
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Originally Posted by cb1980
depends on the offset and backspacing, the stock wheels are either 19x10 or 10.5, can't remember off the top of my head
what would be the ideal back spacing width size ect.
Old 11-19-2017, 11:33 PM
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I haven't ran the 15" wheel on my C6 because I have no interest in doing the conversion to make them fit, so I don't know all of the specifics but depending on tire width used, you should be able to get away with a 15x10 with around 6 to 7 inches of backspacing and that should put you close to flush or possibly sticking out a little bit.

there is a guy who runs at one of our local tracks with dark stars in 15x10 but I think his backspacing is closer to 8 inches and his stick out about an inch or two past the edge of the fender
Old 11-20-2017, 06:30 AM
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Originally Posted by cb1980
I haven't ran the 15" wheel on my C6 because I have no interest in doing the conversion to make them fit, so I don't know all of the specifics but depending on tire width used, you should be able to get away with a 15x10 with around 6 to 7 inches of backspacing and that should put you close to flush or possibly sticking out a little bit.

there is a guy who runs at one of our local tracks with dark stars in 15x10 but I think his backspacing is closer to 8 inches and his stick out about an inch or two past the edge of the fender
Awesome thanks for getting me in the right direction
Old 11-20-2017, 11:57 PM
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no problem, good luck with the search and finding a set of wheels that work for you
Old 11-21-2017, 02:46 PM
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Originally Posted by Huntervincent_6
I have a 07 base model c6 and I’m going to do the 15” conversion but I’m going to keep my stock base fenders, what’s the widest “ wheel” I can run if I do a 15?? Would a 15x10 be ok? Or will that he to wide for the stock fender
Unless you're gonna be making some crazy power and/or plan on launching it at 5000RPM (or more) why not save yourself the hassle and just go with a setup similar to mine?

315/35/17" Hoosier drag radials on C4 ZR1 reproduction rims - regularly cut mid 1.3 60ft times launching it at around 1800RPM.

I almost did the same thing a couple years back only to realize that I was getting as good (and in some cases better) 60ft times than full blown race cars will slicks running in the 9s.

Last edited by subfloor@centurytrans; 11-21-2017 at 02:46 PM.
Old 11-30-2017, 06:36 PM
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Originally Posted by subfloor@centurytrans
Unless you're gonna be making some crazy power and/or plan on launching it at 5000RPM (or more) why not save yourself the hassle and just go with a setup similar to mine?

315/35/17" Hoosier drag radials on C4 ZR1 reproduction rims - regularly cut mid 1.3 60ft times launching it at around 1800RPM.

I almost did the same thing a couple years back only to realize that I was getting as good (and in some cases better) 60ft times than full blown race cars will slicks running in the 9s.
no rubbing with a 315? And what kind of power are you making?
Old 11-30-2017, 06:41 PM
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Originally Posted by Huntervincent_6
no rubbing with a 315? And what kind of power are you making?
I’m also an 800hp base c6 btw lol I didn’t know what you consider crazy power
Old 11-30-2017, 07:11 PM
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Originally Posted by Huntervincent_6
no rubbing with a 315? And what kind of power are you making?
It would rub if I tried driving with them on the street but at the track they're totally fine.

Not a clue as I've never had it on a dyno. Best ET so far was 10.069 on July 4th and I'm expecting it'll run high 9s in the winter.

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