10" wide rims too wide for the front on a c20? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kookykrispy · 12-23-2008, 12:03 AM

Hey everyone... think 10" wide wheels is too wide for the front on my C20?

I saw these 16's on the local Craigslist and they're a pretty good deal:

Next question...

What is the ideal backspacing for some 10" wide rims?

What's a good tire size that would really fill up the wheelwell, but not rub?

Longhorn Man · 12-23-2008, 12:13 AM

you could get 9 1/2 inch rims stock.... so I say 10 inches isn't too much.

Gray Ghost · 12-23-2008, 02:05 AM

On a fleetside bed most any 10" wheel will fit inside the well....backspacing is generally 4.25" to 4.5" on most wheels. Most folks don't know that the stepsides are an inch narrower on each side and most 10" wheels of the day won't fit under the wells. I have 10" wagon wheels on my stepper [not my choice...they were on it when I bought it] and they stick out a bit.

I think my '73 C20 had 6.5" wide wheels and they looked very slim in the wheelwells....never seen or heard of any wheel wider than that from the factory on a 3/4 ton....were they steelies?

Longhorn Man · 12-23-2008, 07:23 AM

yeah, steel 9.5 or 9.75 X 16.5 steel rim, looked just like the ones youy are talking about.
Stllookin has a bunch of them.

stllookn · 12-23-2008, 11:32 AM

The only rub at full lock or when bouncing over big speed bumps...LOL! BTW....33 x 12.5 x 16.5 tires.

kcjones · 12-23-2008, 12:38 PM

That's a stellar longhorn!

Comments on the wheel/wheelwell spacing:

1) Tires have a lot to do with the whole scenario. A 10" wide wheel can take a 275 tire or a 12.5" tire. A 10" wide 16" tall wheel can take 35" tall tires or 28" tall tires, so don't forget to think about tires!

2) a few things I recently learned about track width:

I have a '74 12 bolt with drums in my 67C20, and 17x9 ralleys with 5" bs on the rear (I look at it like I have 4" of "frontspace"), and I have 1.5" of space between tire and fenderwell.

In the front, I have factory style 5 lug discs, and 17x8 with 4" bs (or in my weird world, 4" of "frontspace"). This leaves me about 3/8" between tire and fenderwell.

I guess what I'm getting at hear is that first of all, with factory discs and a "wide" rear end (71' and up if I'm not mistaken), the front track width is wider than the front. Secondly, you can fit a 10" wide wheel with discs and 4" backspace if your truck is stock height (just don't go 40mph over speed bumps!). But, you'd probably be happier if you ran 8" wide wheel on a factory height, factory disc truck.

But, as usual, I could be completely wrong.

12-23-2008, 12:03 AM	#1
kookykrispy The Early Chevy Van Man Join Date: Dec 2008 Location: Seattle, WA Posts: 76	10" wide rims too wide for the front on a c20? Hey everyone... think 10" wide wheels is too wide for the front on my C20? I saw these 16's on the local Craigslist and they're a pretty good deal: Next question... What is the ideal backspacing for some 10" wide rims? What's a good tire size that would really fill up the wheelwell, but not rub? __________________ 64 Chevy Van 65 GMC Handi-Van 99 2500 silverado 4x4 ext cab

12-23-2008, 12:13 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 10" wide rims too wide for the front on a c20? you could get 9 1/2 inch rims stock.... so I say 10 inches isn't too much.

12-23-2008, 02:05 AM	#3
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: 10" wide rims too wide for the front on a c20? On a fleetside bed most any 10" wheel will fit inside the well....backspacing is generally 4.25" to 4.5" on most wheels. Most folks don't know that the stepsides are an inch narrower on each side and most 10" wheels of the day won't fit under the wells. I have 10" wagon wheels on my stepper [not my choice...they were on it when I bought it] and they stick out a bit. I think my '73 C20 had 6.5" wide wheels and they looked very slim in the wheelwells....never seen or heard of any wheel wider than that from the factory on a 3/4 ton....were they steelies? __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps. Last edited by Gray Ghost; 12-23-2008 at 02:11 AM.

12-23-2008, 07:23 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 10" wide rims too wide for the front on a c20? yeah, steel 9.5 or 9.75 X 16.5 steel rim, looked just like the ones youy are talking about. Stllookin has a bunch of them.

12-23-2008, 11:32 AM	#5
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: 10" wide rims too wide for the front on a c20? The only rub at full lock or when bouncing over big speed bumps...LOL! BTW....33 x 12.5 x 16.5 tires. Attached Images __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary) Last edited by stllookn; 12-23-2008 at 04:14 PM.

12-23-2008, 12:38 PM	#6
kcjones I wish I was a cowboy Join Date: Apr 2008 Location: Rohnert Park, CA Posts: 409	Re: 10" wide rims too wide for the front on a c20? That's a stellar longhorn! Comments on the wheel/wheelwell spacing: 1) Tires have a lot to do with the whole scenario. A 10" wide wheel can take a 275 tire or a 12.5" tire. A 10" wide 16" tall wheel can take 35" tall tires or 28" tall tires, so don't forget to think about tires! 2) a few things I recently learned about track width: I have a '74 12 bolt with drums in my 67C20, and 17x9 ralleys with 5" bs on the rear (I look at it like I have 4" of "frontspace"), and I have 1.5" of space between tire and fenderwell. In the front, I have factory style 5 lug discs, and 17x8 with 4" bs (or in my weird world, 4" of "frontspace"). This leaves me about 3/8" between tire and fenderwell. I guess what I'm getting at hear is that first of all, with factory discs and a "wide" rear end (71' and up if I'm not mistaken), the front track width is wider than the front. Secondly, you can fit a 10" wide wheel with discs and 4" backspace if your truck is stock height (just don't go 40mph over speed bumps!). But, you'd probably be happier if you ran 8" wide wheel on a factory height, factory disc truck. But, as usual, I could be completely wrong. __________________ -Kris Met list: Cyclone,Wilson,TranzAm,extd56,hotrodhomi,mnky30,Rokcrln,Brad,JerryJones(well, his truck anyway).



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.