6 lug back spacing? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stealthy '69 · 03-23-2009, 09:52 PM

I was thinking about ordering some wheels from summit and I'm not sure what backspacing to go with. What is everyone else running. What will fit ect.? I'm going to be running 15x8 up front and 15x10 out back.Please help me out.

**lolife99** · 03-23-2009, 10:47 PM

Factory 15x8 6-lug ralleys have a 3-5/8" backspace.
I wouldn't go more than 4" backspace.
If you plan to ever lower it I would re-think your 15x10's.
You may have to run 15x7's and 15x8's.

stealthy '69 · 03-25-2009, 08:58 AM

how low can you go with 10 inch wide on the rear?

**lolife99** · 03-25-2009, 11:51 AM

You can run a 10" rim but you need the correct backspacing. At least a 5" or 5.5" backspace.

JAB'70 · 03-26-2009, 08:52 AM

I'm running Ralleys on all 4 - 15 x 10 6 lugs backspacing is 4.25, fits perfect. Click profile for pix of my '70.

**raggedjim** · 03-26-2009, 09:51 AM

Quote:

Originally Posted by JAB'70

I'm running Ralleys on all 4 - 15 x 10 6 lugs backspacing is 4.25, fits perfect. Click profile for pix of my '70.

Your truck looks good but it would never tuck if it was lowered. I think stealty is wanting a lowered truck.

Rg

oldblue1968chevy · 03-26-2009, 10:03 AM

im running 15/8 rallys all around..im wanting to lower it maybe 4/6 drop is that gonna be ok?

ChevLoRay · 03-26-2009, 11:35 AM

My '69 has an ECE drum to disc conversion. I am running Wheel Vintique vette-style rallye wheels, 15x8 up front with a 4-inch backspace. In the back, I'm running 15x10's with 5-inch backspace. Up front it's dropped 2.5 inches w/spindles. In the rear, it's minus 4 inches. No issues with suspension. Here's a pic.

oldblue1968chevy · 03-26-2009, 09:40 PM

cool dunno wat my backspacing is lol need to check

ap2002 · 03-27-2009, 04:22 AM

i run 16x10 in the rear on my rear 6lug and they tuck perfect, thats with a 5"rear drop.... cant remember the back space though? 5 or 5.5?

JAB'70 · 03-27-2009, 08:44 AM

raggedjim - Okay, I can buy that. Here is my brother's truck (orange one) it is lowered. He's running 10's also. Its not as clean as I would like it. They're over maybe a 1 1/2" to 2" past the fender on this picture, but it look good. He has since change out the rims, now it a lot cleaner, maybe 1/4" to 1/2" past the fender.

**raggedjim** · 03-27-2009, 10:16 AM

My blazer wouldn't tuck before and it had a 6" rear drop! I have bought new wheels and tires since (don't have a pic yet)

Some people like to tuck'em but I like them either way.

I agree, the fronts on your brothers truck need to be 8"

Rg

03-23-2009, 09:52 PM	#1
stealthy '69 '69 Chevy SWB Join Date: Feb 2009 Location: Surprise, Az Posts: 1,065	6 lug back spacing? I was thinking about ordering some wheels from summit and I'm not sure what backspacing to go with. What is everyone else running. What will fit ect.? I'm going to be running 15x8 up front and 15x10 out back.Please help me out.

03-23-2009, 10:47 PM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: 6 lug back spacing? Factory 15x8 6-lug ralleys have a 3-5/8" backspace. I wouldn't go more than 4" backspace. If you plan to ever lower it I would re-think your 15x10's. You may have to run 15x7's and 15x8's. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

03-25-2009, 08:58 AM	#3
stealthy '69 '69 Chevy SWB Join Date: Feb 2009 Location: Surprise, Az Posts: 1,065	Re: 6 lug back spacing? how low can you go with 10 inch wide on the rear?

03-25-2009, 11:51 AM	#4
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: 6 lug back spacing? You can run a 10" rim but you need the correct backspacing. At least a 5" or 5.5" backspace. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

03-26-2009, 08:52 AM	#5
JAB'70 Registered User Join Date: May 2007 Location: South Carolina Posts: 54	Re: 6 lug back spacing? I'm running Ralleys on all 4 - 15 x 10 6 lugs backspacing is 4.25, fits perfect. Click profile for pix of my '70. Last edited by JAB'70; 03-26-2009 at 08:56 AM.

03-26-2009, 10:03 AM	#7
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: 6 lug back spacing? im running 15/8 rallys all around..im wanting to lower it maybe 4/6 drop is that gonna be ok? __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

03-26-2009, 11:35 AM	#8
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: 6 lug back spacing? My '69 has an ECE drum to disc conversion. I am running Wheel Vintique vette-style rallye wheels, 15x8 up front with a 4-inch backspace. In the back, I'm running 15x10's with 5-inch backspace. Up front it's dropped 2.5 inches w/spindles. In the rear, it's minus 4 inches. No issues with suspension. Here's a pic. Attached Images __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. Last edited by ChevLoRay; 03-26-2009 at 11:36 AM.

03-26-2009, 09:40 PM	#9
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: 6 lug back spacing? cool dunno wat my backspacing is lol need to check __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

03-27-2009, 04:22 AM	#10
ap2002 Registered User Join Date: Apr 2008 Location: Houston, TX Posts: 247	Re: 6 lug back spacing? i run 16x10 in the rear on my rear 6lug and they tuck perfect, thats with a 5"rear drop.... cant remember the back space though? 5 or 5.5? __________________ 1971 C-10 SWB - LS swap w/4L60e, 20x8.5front 20x12rear, 1968 C-10 SWB - 454 BB TH350 -Gone!

03-27-2009, 08:44 AM	#11
JAB'70 Registered User Join Date: May 2007 Location: South Carolina Posts: 54	Re: 6 lug back spacing? raggedjim - Okay, I can buy that. Here is my brother's truck (orange one) it is lowered. He's running 10's also. Its not as clean as I would like it. They're over maybe a 1 1/2" to 2" past the fender on this picture, but it look good. He has since change out the rims, now it a lot cleaner, maybe 1/4" to 1/2" past the fender. Attached Images Last edited by JAB'70; 03-27-2009 at 08:46 AM.

03-27-2009, 10:16 AM	#12
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,460	Re: 6 lug back spacing? My blazer wouldn't tuck before and it had a 6" rear drop! I have bought new wheels and tires since (don't have a pic yet) Some people like to tuck'em but I like them either way. I agree, the fronts on your brothers truck need to be 8" Rg __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203



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