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Convo Pro 15x4 With 2 5/16" Backspacing

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Old 02-12-2016, 07:20 AM
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Default Convo Pro 15x4 With 2 5/16" Backspacing

I'm looking for a set of drag wheels for my 2000 SS & have read all I can find on here about what fits.
Seems like everyone runs the minimal backspacing on just about all of the 15" wheels but I don't want them out that far.

From what I've read on here most guys with Convo Pro went with 1 3/4" back spacing but some did mention the used the 2 5/16" but had to grind some but nobody said how much.
My car had Corvette front brakes & I converted it back to stock F body using all new stuff so it's probably @ the worst for grinding.

I know this is long shot because Convo Pros aren't popular but anyone know how much grinding is required?
Old 02-15-2016, 03:44 PM
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Ive got them on my car. The 15x4 with the 1.75 backspace does not stick out at all on the front with a 165/80r15 tire on it. Its actually tucked in the fender a tad. Only had to grind the rear calipers with the 15x9's & 6.5 backspace, which wasn't a lot.
Old 02-16-2016, 09:33 AM
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Originally Posted by MM98
Ive got them on my car. The 15x4 with the 1.75 backspace does not stick out at all on the front with a 165/80r15 tire on it. Its actually tucked in the fender a tad. Only had to grind the rear calipers with the 15x9's & 6.5 backspace, which wasn't a lot.
Thanks, I want to do the 15x9 rears with the 6.5" backspace & have only seen a few pictures with LS Camaros with these wheels.
I read some older threads with guys saying the 1.75 backspace kind of hung out & wanted the fronts to be about the same as the stock wheels.

I also read the sticky & some old threads on the factory offset & thought some said the factory 9" wide wheels had a 7 1/4" backspace leaving 1 3/4" out but after doing the math a 9" wheel with a 50 mm offset should have a 6.47" backspace leaving 2.53" out.
So I guess a 4" Convo Pro with 1 3/4" backspace would have 2 1/4" out & really shouldn't hang out unless I'm missing something.

IDK but they still look like they're out more than the stock wheels, maybe it's the tires.

Have any pictures?
Old 02-16-2016, 01:00 PM
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I'll post some pics tonight. But my fronts are perfect with a 165/15 tire on the front, no sticking out or grinding required. The rears with a 275/60r15 drag radial are about even with the quarter. Here's a vid after I just got it running, kinda gives you an idea how they look towards the end

Old 02-18-2016, 07:41 PM
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Originally Posted by MM98
I'll post some pics tonight. But my fronts are perfect with a 165/15 tire on the front, no sticking out or grinding required. The rears with a 275/60r15 drag radial are about even with the quarter. Here's a vid after I just got it running, kinda gives you an idea how they look towards the end
Is your car lowered?
Old 02-19-2016, 08:16 AM
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Yes with BMR 1" springs
Attached Thumbnails Convo Pro 15x4 With 2 5/16" Backspacing-image.jpeg   Convo Pro 15x4 With 2 5/16" Backspacing-image.jpg  

Last edited by MM98; 02-19-2016 at 02:39 PM.
Old 02-22-2016, 03:10 PM
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I've got a set of Convo ETs, I don't remember what backspacing, but they don't stick out at all and didn't require any grinding in the front.

The rears might need grinding, but not much at all, I don't remember if I had to grind for those wheels or a different set I had.

They'll actually be for sale soon.
Old 02-22-2016, 05:54 PM
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Originally Posted by badbird
I've got a set of Convo ETs, I don't remember what backspacing, but they don't stick out at all and didn't require any grinding in the front.

The rears might need grinding, but not much at all, I don't remember if I had to grind for those wheels or a different set I had.

They'll actually be for sale soon.
From what I've read on here Firebirds wheel wells are out further than Camaros are, you can tell the backspace on the fronts because the 2 5/16" are smooth & look different.

PM me details on what you'll be selling.



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