The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-01-2004, 12:27 PM   #1
chargedstang89
Registered User
 
Join Date: Oct 2002
Posts: 90
Bolt Pattern/Wheel Help! (4x4)

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
chargedstang89 is offline   Reply With Quote
Old 03-01-2004, 12:42 PM   #2
CRRoy71
Registered User
 
Join Date: Feb 2003
Location: Mont Belvieu, TX
Posts: 852
I do know that they are 6 on 5.5, but someone else will have to help with the back spacing.
__________________
Chris

'92 ext. cab s/b 4.3L "Sparky"
'04 crew cab 2500 4x4 6.0L
CRRoy71 is offline   Reply With Quote
Old 10-15-2007, 11:01 AM   #3
dirtybird1
Registered User
 
dirtybird1's Avatar
 
Join Date: Apr 2005
Location: Saint Clair, MI
Posts: 35
Re: Bolt Pattern/Wheel Help! (4x4)

Bringing this back from the dead. I have an 84, so practically the same. What is the center hole size? What should backspacing be? Thanks
Matt
dirtybird1 is offline   Reply With Quote
Old 10-17-2007, 03:29 PM   #4
dirtybird1
Registered User
 
dirtybird1's Avatar
 
Join Date: Apr 2005
Location: Saint Clair, MI
Posts: 35
Re: Bolt Pattern/Wheel Help! (4x4)

No one?
dirtybird1 is offline   Reply With Quote
Old 10-17-2007, 05:58 PM   #5
Duro5341
Registered User
 
Duro5341's Avatar
 
Join Date: Dec 2006
Location: Earth
Posts: 239
Re: Bolt Pattern/Wheel Help! (4x4)

It is a 6- 5.5 bolt spacing, usually when buying rims it'll say for chevy truck. Because the center flange has to be bigger to accomidate the hub assembly

As for backspacing....no clue

Duro
__________________
-1986 K10 LWB, 350 HD,TH400
3.08, 30 spline 10 bolt, with an Auburn Posi, 31" tires
All original, second owner truck
-1979 Monte Carlo, 350, 200r4, 3.73 posi
-1987 GT T-top Mustang - slow moving project
Duro5341 is offline   Reply With Quote
Old 10-17-2007, 06:37 PM   #6
ChaseDale3and8
Registered User
 
ChaseDale3and8's Avatar
 
Join Date: Jun 2007
Location: Springfield Mo.
Posts: 1,086
Re: Bolt Pattern/Wheel Help! (4x4)

I believe the backspacing on a 6 lug 5.5 is 5". ...Joe
__________________
I'm not speedin'! I'm qualifyin'!
ChaseDale3and8 is offline   Reply With Quote
Old 10-18-2007, 09:48 AM   #7
dirtybird1
Registered User
 
dirtybird1's Avatar
 
Join Date: Apr 2005
Location: Saint Clair, MI
Posts: 35
Re: Bolt Pattern/Wheel Help! (4x4)

Thanks!!
dirtybird1 is offline   Reply With Quote
Old 10-18-2007, 10:52 AM   #8
Captkaos
www.73-87chevytrucks.com
 
Captkaos's Avatar
 
Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
Re: Bolt Pattern/Wheel Help! (4x4)

AFAIK all factory Chevy truck rims use a 4" backspacing regardless of rim size (7 or 8" wide)
__________________
Chris Lucas
1973 Chevy C-10
1978 GMC Jimmy (2WD) - SOLD
1987 R10 twin turbo LS
1991 R3500 SRW CrewCab
1985 K5 diesel swapped project
1989 K5 2WD conversion w/ Vette susp Project
Captkaos Customs
73-87chevytrucks.com
Captkaos is offline   Reply With Quote
Old 10-18-2007, 06:08 PM   #9
ChaseDale3and8
Registered User
 
ChaseDale3and8's Avatar
 
Join Date: Jun 2007
Location: Springfield Mo.
Posts: 1,086
Re: Bolt Pattern/Wheel Help! (4x4)

I believe that he was asking about aftermarket rims. At least that is the way that I understood the question. I'm running aftermarket wheels on both of my trucks. One has 16x8s and the other has 15x10s. Both have a 5" backspace. Hope this helps. ...Joe
__________________
I'm not speedin'! I'm qualifyin'!
ChaseDale3and8 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:49 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com