did rally's come w/diff. backspce? or do I need 8" - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cochino12 · 01-25-2008, 12:36 AM

I'm runnin 7" wide rally's w/235/60 tires on the front of my 77 2wd and the problem I have is the wheels are tucked in about 3-4". Would an 8" wide wheel only pull it out 1" or did rally wheels come in different b.s.?

**Captkaos** · 01-25-2008, 01:05 AM

All of them have 4" BS, the 8 will have 1" on the fender side..

**lolife99** · 01-25-2008, 07:53 AM

I got a different answer. I went out to the shop and measured all three sizes of truck ralleys. Here's what I came up with.
15"x6.5" van ralley = 4" BS.

15"x7" truck ralley= 3 5/8" BS

And 15"x8" truck ralley= 4" BS.

cochino12 · 05-26-2008, 06:43 PM

thanks

BowTieOgre · 05-27-2008, 07:58 PM

Quote:

Originally Posted by lolife99

I got a different answer. I went out to the shop and measured all three sizes of truck ralleys. Here's what I came up with.
15"x6.5" van ralley = 4" BS.

15"x7" truck ralley= 3 5/8" BS

And 15"x8" truck ralley= 4" BS.

Not that I doubt your measurements but dont the 15x7s use the 1" deep trim ring and the 15x8s use the 2" deep rings? That would seem to indicate the 1" difference is on the outside...is that wrong?

dswancutt · 05-27-2008, 08:01 PM

7" ralleys use the deep ring.

**lolife99** · 05-27-2008, 10:11 PM

7's and 8's use the same trim ring. The trim ring is closer to the center of the wheel,... on the 7's. The van ralleys (6.5") use a narrower trim ring.

01-25-2008, 12:36 AM	#1
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	did rally's come w/diff. backspce? or do I need 8" I'm runnin 7" wide rally's w/235/60 tires on the front of my 77 2wd and the problem I have is the wheels are tucked in about 3-4". Would an 8" wide wheel only pull it out 1" or did rally wheels come in different b.s.? __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

01-25-2008, 01:05 AM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: did rally's come w/diff. backspce? or do I need 8" All of them have 4" BS, the 8 will have 1" on the fender side.. __________________ 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

01-25-2008, 07:53 AM	#3
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: did rally's come w/diff. backspce? or do I need 8" I got a different answer. I went out to the shop and measured all three sizes of truck ralleys. Here's what I came up with. 15"x6.5" van ralley = 4" BS. 15"x7" truck ralley= 3 5/8" BS And 15"x8" truck ralley= 4" BS. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 01-25-2008 at 07:53 AM.

05-26-2008, 06:43 PM	#4
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Re: did rally's come w/diff. backspce? or do I need 8" thanks __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

05-27-2008, 08:01 PM	#6
dswancutt Registered User Join Date: Jul 2003 Location: Franklin, NE Posts: 387	Re: did rally's come w/diff. backspce? or do I need 8" 7" ralleys use the deep ring.

05-27-2008, 10:11 PM	#7
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: did rally's come w/diff. backspce? or do I need 8" 7's and 8's use the same trim ring. The trim ring is closer to the center of the wheel,... on the 7's. The van ralleys (6.5") use a narrower trim ring. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 05-29-2008 at 05:38 AM.



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