15x12 under a 68 dart stock frame rails? Pix please

Posted By: mikeysmopars

15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:02 AM

Workin on the dana and ladder bars, Was running 15x10 and 30x10.5 slicks

It looks close but i might be able to squeeze a 15x12 with the right backspace. Anyone with a dart or valiant got 15x12s in between stock frame rails and Quarters? I'd appreciate any pix.

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Posted By: Al_Alguire

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:13 AM

I had them on the Valiant. Mini tubbed but only a 29.5x10.5

Posted By: Al_Alguire

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:17 AM

Posted By: rt66jim

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:20 AM

I do but I cheated. I've moved my stock frame rails in 3.75" on each side. And added a strip to the wheel tubs. The Dana was narrowed 1" per side and I use 15x12 with 6.5" BS. Tires are 12x29 GY. I don't have any good pics but would take some if you want. Jim

Posted By: Rhinodart

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:25 AM

No pictures handy but I had 29x11x15 slicks on my 69 Dart with the springs moved to the frame rails and stock wheel houses. I did have to hammer a couple of spots out on the wheelhouses and roll the lips on the quarters. I had custom made 15" wheels made and it looked like I could have gone a little bit wider, but 12" wide would have been tight.

Posted By: mikeysmopars

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:35 AM

I had 29 10.5w on the back but with 456 gears it would nose over just before the stripe, Went to the 30" and gained 2mph but they were true 10.5 and started having traction problems, I'd like to get a 15x11 or 11.5 but dont want to guess.

Posted By: mikeysmopars

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:37 AM

Quote:

I had them on the Valiant. Mini tubbed but only a 29.5x10.5

WISH i would have had the mony at the time you were selling that one, Sweet car AL

Posted By: bigtimeauto

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 04:45 AM

Stock untouched rails:

Posted By: mikeysmopars

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 05:04 AM

Very nice,, What size tire?

Posted By: bigtimeauto

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 05:05 AM

Quote:

Very nice,, What size tire?

TT5/ 29.5x10.5

Posted By: greendart408

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 05:44 AM

I had 15x11s made for mine, 29.5x10.5w.

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Posted By: 408strokerdart

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 02:35 PM

Quote:

I had 15x11s made for mine, 29.5x10.5w.

I love the stance of this car. Very nice!

Posted By: poisondart2

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 03:12 PM

There is 14 inches between the inside of the fender and the outside of the frame rail on my 69 Dart so i run a 29.5x10.5-15 which is a 13.2 sec.

Posted By: Chris2581

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/12/12 09:44 PM

FWIW...since it's an A-body,my car (71 Demon) has 15x12s with a 7" backspace,and I use a 12.25x31.25 Phoenix tire.

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Posted By: cesar perez

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/13/12 07:45 PM

if your rear is not cut 15x12 with an 8 inch backspacing and a 13.6 outside width slick is the widest u can go without cuting quarters

Posted By: topside

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/14/12 12:04 AM

My Duster runs 15x12s with 13x31 tires,using a 4" backspace.
Minitubs, springs in with the 3" kit, wheel openings stretched at the bottoms.
Wheels with 6" BS may be easier to come by, if that matters.

Posted By: hemicop

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/14/12 12:17 AM

Okay, so what did I do wrong? My '69 Dart was mini-tubbed & the best I could get was 15x10 with 4 1/2in BS????

Posted By: 70dusterjohn

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/14/12 12:20 AM

You didn't do anything wrong! The body is way way different! My Dart is like 3" narrower than the Duster!

Posted By: 70dusterjohn

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/14/12 12:21 AM

From frame to the quarter!

Posted By: hemicop

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/14/12 12:22 AM

Whew!!!! Thanks!

Posted By: mikeysmopars

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/14/12 12:30 AM

Idealy, I'd like to run 15x12 wheel and have a 30"tall x 12" footprint, The section width will be the issue i think.

Posted By: deaks

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/14/12 12:43 AM

I run a 31x10.5 and i think it's a W because i dont believe hoosier do another tyre in that size.
Mick

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Posted By: Thumperdart

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/16/12 09:09 PM

Quote:

Idealy, I'd like to run 15x12 wheel and have a 30"tall x 12" footprint, The section width will be the issue i think.

No photos but I had a 12" rim w/stock width housing and w/a 7 1/2" backspacing it fit but was tight and that`s why I went to 10" rims............

Mikey, can you show me that engine bay photo again as I have no clue which post that was on..........

Posted By: topfueldart

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/16/12 09:26 PM

I run a 17 x 11 with 7 inches of backspacing. Each side is like 1.25 narrower than stock. A 12 will fit a minitubbed Dart with perfect backspacing, just depends on your rear end width.
My tire is a 345/40/17, rated 27.7, 13.7 section on a 12" wheel, on my 11 its probably barely narrower, and it only rubs under articulation on the inner tub. Anything over 13.5 is basically at the limit unless you have square tubs.

Posted By: 408strokerdart

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/17/12 02:56 PM

I notched the rear frame rails about 1" and run 31.25 MT raidal slicks on 12" wheels easy. Going to beadlock a 14" wheel down to 13" and should still leave plenty of room. I think it has been said here already....the right backspace for your set-up is critical to getting it to fit.

Posted By: mikeysmopars

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/17/12 04:01 PM

Thanks Brian, Was hoping you would chime in. Your car looks to have been backhalfed, The biggest dilema is most of the wheel company's make thier wheels in 2" incriments so if a 15x11 is the easiest way out looks like i'd have to have them made. But i thought about notching the rails like you said, that would give me plenty of room even with section width.

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Posted By: Thumperdart

Re: 15x12 under a 68 dart stock frame rails? Pix please - 12/17/12 04:55 PM

Quote:

Thanks Brian, Was hoping you would chime in. Your car looks to have been backhalfed, The biggest dilema is most of the wheel company's make thier wheels in 2" incriments so if a 15x11 is the easiest way out looks like i'd have to have them made. But i thought about notching the rails like you said, that would give me plenty of room even with section width.

My cars is way better since I ditched the 12`s and went w/the 10`s...........more room and hooks no worse than before and street driving is much more pleasureable especially w/passengers.