4x4 Bolt Pattern & Wheel Size HELP! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chargedstang89 · 03-01-2004, 12:26 PM

I need a new set of wheels for my truck, but don't know the proper backspacing or bolt pattern. I have a 1985 GMC Sierra 4x4 1/2 ton. I know the wheels are 6 lug, but I just want to confirm that they are 6x5.5. Also...what backspacing do I need? Brakes are all factory...discs up front & drums in the back. Any help would be great.

Thanks,

Josh

**JIMs70GMC** · 03-01-2004, 12:31 PM

Yep it's 6 on 5.5". The typical back spacing is 3.5-4". What size are tires & rims you looking for?

LeRoy · 03-01-2004, 01:09 PM

FYI The toyota 4x4's have the same bolt pattern. Keep that in the back of your mind when looking for used wheels.

**kwmech** · 03-03-2004, 12:36 AM

Where are you located? I have two sets of rims and tires that are in really good shape for sale. 1 set is off a factory '90 1/2 ton and the other set is aftermarket.

03-01-2004, 12:26 PM	#1
chargedstang89 Registered User Join Date: Oct 2002 Posts: 90	4x4 Bolt Pattern & Wheel Size HELP! I need a new set of wheels for my truck, but don't know the proper backspacing or bolt pattern. I have a 1985 GMC Sierra 4x4 1/2 ton. I know the wheels are 6 lug, but I just want to confirm that they are 6x5.5. Also...what backspacing do I need? Brakes are all factory...discs up front & drums in the back. Any help would be great. Thanks, Josh

03-01-2004, 12:31 PM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Yep it's 6 on 5.5". The typical back spacing is 3.5-4". What size are tires & rims you looking for? __________________ 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

03-01-2004, 01:09 PM	#3
LeRoy Registered truck nut Join Date: Dec 1999 Location: Mt. Vernon, Washington, USA Posts: 1,584	FYI The toyota 4x4's have the same bolt pattern. Keep that in the back of your mind when looking for used wheels. __________________ MOUNT VERNON, WASH. STATE Need a part? Just PM me

03-03-2004, 12:36 AM	#4
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,650	Where are you located? I have two sets of rims and tires that are in really good shape for sale. 1 set is off a factory '90 1/2 ton and the other set is aftermarket.



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