Rally wheel fitting problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**OneBad71** · 10-26-2022, 05:52 PM

Hello, I'm hoping I can get some help. Well to start on my 71 C10 I tubbed the rear wells and am leaving the stock rear end as is so after figuring out what back space I needed for a 12 inch rim I went to Discount Tire in August and ordered two rear wheels, 15" x 12" from US Wheel. # months later they arrive on Wednesday. I have a 2 wheel drive with rear drum brakes. I ordered them with a 7 3/4" backspace. I went to test fit them this morning and they won't fit over the drum brake. The wheels taper in , in the middle. Well I went to Discount tire and they call Us wheel and basically i'm out $600.00 . They will not take them back? These are there Rally 54 Chevy truck wheels?
I know there are other members out there running the 15" Rally wheels , with the 29/15.5/15 tires, so what went wrong? Is there another source that people have used that didn't have the problem. I believe my rear drums are the 11" ones . Any help would be greatly appreciated. Totally bummed.
Thankyou, Dan

diggerbob · 10-26-2022, 06:37 PM

I bought new rallys from Wheelsmith to replace my Wheel Vintique rallys. Wheelsmith will build them to your specs and they hold them to much tighter tolerences than other mfrs for lateral and radial runout. http://thewheelsmith.net

**OneBad71** · 10-26-2022, 07:05 PM

Thanks i'll check them. Hopefully someone has bought what I need and they fit and can share the source

SCOTI · 10-27-2022, 09:54 AM

I fit 15x14 widened Ralleys on a 68 truck 12bolt w/stock rear drums w/o issue 30yrs ago.

Deep back space wheels can be/are an issue w/the HD drum package on the Squarebody trucks. I don't recall the 67-72's having the HD drum brake option but I know they'll swap over from a Square. Is it possible something was changed?

**OneBad71** · 10-27-2022, 10:09 AM

Quote:

Originally Posted by SCOTI

I fit 15x14 widened Ralleys on a 68 truck 12bolt w/stock rear drums w/o issue 30yrs ago.

Deep back space wheels can be/are an issue w/the HD drum package on the Squarebody trucks. I don't recall the 67-72's having the HD drum brake option but I know they'll swap over from a Square. Is it possible something was changed?

Thanks for replying. I have a 71 and my rear drums are 11" . So the OD of the drums is 11 3/8 " . Maybe another brand of rallye wheel is built different ? The US wheel doesn't and they offer no help as they got their money.
I need a 12" wide with 7 3/4 bs

SCOTI · 10-27-2022, 10:33 AM

Quote:

Originally Posted by OneBad71

Thanks for replying. I have a 71 and my rear drums are 11" . So the OD of the drums is 11 3/8 " . Maybe another brand of rallye wheel is built different ? The US wheel doesn't and they offer no help as they got their money.
I need a 12" wide with 7 3/4 bs

Mine were 14" wide 9 3/4bs. I think I had them built @ Ralley America (?). I'd offer to take some measurements, but I sold the wheels/tires off before Y2k.

geezer#99 · 10-27-2022, 10:32 AM

Post a pic of the backside of the rims.

**OneBad71** · 10-27-2022, 10:38 AM

Quote:

Originally Posted by geezer#99

Post a pic of the backside of the rims.

Honestly, I don't know how to post pictures. I'm terrible on a computer.
The wheels taper down from the lip and the center section is to small and won't fit over the drum. I will measure them a bit later .

**MikeB** · 10-27-2022, 10:36 AM

Were the wheels custom made to order? That would explain why there's no refund.

Maybe a dumb question, but do they fit OK with the drums removed?

Also, I'd lay a wheel on the floor face down, and then drop the drum in the back to see where it interferes. Maybe a smaller diameter non-finned drum would work, if they are even available.

**OneBad71** · 10-27-2022, 10:42 AM

Quote:

Originally Posted by MikeB

Were the wheels custom made to order? That would explain why there's no refund.

Maybe a dumb question, but do they fit OK with the drums removed?

Also, I'd lay a wheel on the floor face down, and then drop the drum in the back to see where it interferes. Maybe a smaller diameter non-finned drum would work, if they are even available.

Mike, I did order them through Discount Tire and asked for a 7 3/4 bs. US Wheel advertises up to 9" bs so I never thought it would be a problem ?
The rims hit the OD of the drums so not much can be done to them since they fir the backing plates.

**OneBad71** · 10-27-2022, 11:39 AM

I need to make correction. I remeasured my drums and the OD is 13 3/8 "
I guess I have larger rear drums than standard ?
I didn't know there were different sizes ?
To fit i will have to go smaller drum brakes ?
I never thought this was going to be an issue ?

**OneBad71** · 10-29-2022, 04:59 PM

Well still a no go on wheels. I contacted Wheelsmith in Ca and they didn't have a solution. I was told that the older Rally wheels had a larger center section.
The new ones now are like 12 5/8 ID. They looked but didn't have any left in my 15x12 size.
I was told some guys that had my issue would have a machinist cut the drums down and remove the fins ? I just don't know.
I have been looking at rear disc brake kits but having a hard time finding them with a total OD of under 12 1/2 "

I really like the look of the rally's on these trucks. I looked at 17" but none come in 12" wide ?
Hoping for some member help ?
Thank you

10-26-2022, 05:52 PM	#1
OneBad71 Junior Member Join Date: Jul 2022 Location: Gardnerville Posts: 70	Rally wheel fitting problem Hello, I'm hoping I can get some help. Well to start on my 71 C10 I tubbed the rear wells and am leaving the stock rear end as is so after figuring out what back space I needed for a 12 inch rim I went to Discount Tire in August and ordered two rear wheels, 15" x 12" from US Wheel. # months later they arrive on Wednesday. I have a 2 wheel drive with rear drum brakes. I ordered them with a 7 3/4" backspace. I went to test fit them this morning and they won't fit over the drum brake. The wheels taper in , in the middle. Well I went to Discount tire and they call Us wheel and basically i'm out $600.00 . They will not take them back? These are there Rally 54 Chevy truck wheels? I know there are other members out there running the 15" Rally wheels , with the 29/15.5/15 tires, so what went wrong? Is there another source that people have used that didn't have the problem. I believe my rear drums are the 11" ones . Any help would be greatly appreciated. Totally bummed. Thankyou, Dan

10-26-2022, 06:37 PM	#2
diggerbob Registered User Join Date: Mar 2005 Location: Bartlett, TN (near Memphis) Posts: 202	Re: Rally wheel fitting problem I bought new rallys from Wheelsmith to replace my Wheel Vintique rallys. Wheelsmith will build them to your specs and they hold them to much tighter tolerences than other mfrs for lateral and radial runout. http://thewheelsmith.net

10-26-2022, 07:05 PM	#3
OneBad71 Junior Member Join Date: Jul 2022 Location: Gardnerville Posts: 70	Re: Rally wheel fitting problem Thanks i'll check them. Hopefully someone has bought what I need and they fit and can share the source

10-27-2022, 09:54 AM	#4
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,071	Re: Rally wheel fitting problem I fit 15x14 widened Ralleys on a 68 truck 12bolt w/stock rear drums w/o issue 30yrs ago. Deep back space wheels can be/are an issue w/the HD drum package on the Squarebody trucks. I don't recall the 67-72's having the HD drum brake option but I know they'll swap over from a Square. Is it possible something was changed? __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

10-27-2022, 10:32 AM	#7
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,736	Re: Rally wheel fitting problem Post a pic of the backside of the rims.

10-27-2022, 10:36 AM	#9
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,599	Re: Rally wheel fitting problem Were the wheels custom made to order? That would explain why there's no refund. Maybe a dumb question, but do they fit OK with the drums removed? Also, I'd lay a wheel on the floor face down, and then drop the drum in the back to see where it interferes. Maybe a smaller diameter non-finned drum would work, if they are even available. __________________ Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

10-27-2022, 11:39 AM	#11
OneBad71 Junior Member Join Date: Jul 2022 Location: Gardnerville Posts: 70	Re: Rally wheel fitting problem I need to make correction. I remeasured my drums and the OD is 13 3/8 " I guess I have larger rear drums than standard ? I didn't know there were different sizes ? To fit i will have to go smaller drum brakes ? I never thought this was going to be an issue ?

10-29-2022, 04:59 PM	#12
OneBad71 Junior Member Join Date: Jul 2022 Location: Gardnerville Posts: 70	Re: Rally wheel fitting problem Well still a no go on wheels. I contacted Wheelsmith in Ca and they didn't have a solution. I was told that the older Rally wheels had a larger center section. The new ones now are like 12 5/8 ID. They looked but didn't have any left in my 15x12 size. I was told some guys that had my issue would have a machinist cut the drums down and remove the fins ? I just don't know. I have been looking at rear disc brake kits but having a hard time finding them with a total OD of under 12 1/2 " I really like the look of the rally's on these trucks. I looked at 17" but none come in 12" wide ? Hoping for some member help ? Thank you



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