How much backspacing for my truck? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Destructo · 12-08-2003, 12:22 AM

Does anyone know what the ideal backspacing would be for my truck if I were to run 15x8" wheels with 35x12.5" tires on them with 4" of lift on an 85 K10.

**JIMs70GMC** · 12-08-2003, 06:58 AM

I'd say between 3-4".

Destructo · 12-08-2003, 11:55 AM

Thats what I thought would work good. I think i'm going to take both sets of my wheels down to a 4x4 shop about an 1 and a half drive from here and trade both sets of wheels and my 31x10.5 tires in for a set of 15x8 and 33x12.5 tires.

72beast · 12-08-2003, 10:16 PM

I run 3-1/2" stock back spacing. I'm changing over to hummer rims and will be changing my front hubs to DRW hubs and I'm making up a set of spacers to fit the hummer back spacing...

72beast · 12-09-2003, 02:04 PM

that pic didn't work....
heres the spacer.

Bill W · 12-16-2003, 02:32 PM

Stock 4x4 Rally Wheels are 4 inch backspacing. I've got a set on my suburban and a set on my 78 short bed. Both have 31's

Bill

12-08-2003, 12:22 AM	#1
Destructo Registered User Join Date: Sep 2003 Location: Lewisville, NC Posts: 1,836	How much backspacing for my truck? Does anyone know what the ideal backspacing would be for my truck if I were to run 15x8" wheels with 35x12.5" tires on them with 4" of lift on an 85 K10.

12-08-2003, 06:58 AM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I'd say between 3-4". __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

12-08-2003, 10:16 PM	#4
72beast TONYP Join Date: Oct 2001 Location: So Cal Posts: 100	I run 3-1/2" stock back spacing. I'm changing over to hummer rims and will be changing my front hubs to DRW hubs and I'm making up a set of spacers to fit the hummer back spacing... __________________ 72 K/5 350/205 SOFT-TOP DOUG THORLEY HEADERS A/C CUSTOM REAR BUMPER http://www.socalbigdawgs.com/tr/7.18.03/DSC04290.JPG

12-09-2003, 02:04 PM	#5
72beast TONYP Join Date: Oct 2001 Location: So Cal Posts: 100	that pic didn't work.... heres the spacer. __________________ 72 K/5 350/205 SOFT-TOP DOUG THORLEY HEADERS A/C CUSTOM REAR BUMPER http://www.socalbigdawgs.com/tr/7.18.03/DSC04290.JPG

12-16-2003, 02:32 PM	#6
Bill W Registered User Join Date: Mar 2003 Location: Oregon Posts: 229	Stock is 4 inches Stock 4x4 Rally Wheels are 4 inch backspacing. I've got a set on my suburban and a set on my 78 short bed. Both have 31's Bill

12-08-2003, 11:55 AM	#3
Destructo Registered User Join Date: Sep 2003 Location: Lewisville, NC Posts: 1,836	Thats what I thought would work good. I think i'm going to take both sets of my wheels down to a 4x4 shop about an 1 and a half drive from here and trade both sets of wheels and my 31x10.5 tires in for a set of 15x8 and 33x12.5 tires.



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