Anyone tried this Tire set-up?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BATurbo · 02-16-2010, 09:36 PM

Has anyone tried running a 33x10.5 tire on a 15x8 ralleye wheel on a 78 Scottsdale shortbox 4x4 with stock suspension and body height?? I picked up a truck with 15 year old skins (31x10.5s on 15x8 ralleyes), and I'm looking to upgrade to a larger diameter tire to fill up the wheel well a little better. Looking for info on rub points or potential mods that would allow for the 33's on the stock ride set up. Any info would be appreciated. TIA

Restrorob · 02-16-2010, 10:23 PM

You may have a better chance of finding this info in the 4x4/off road section, Maybe Bob will move this over there for ya when he sees it.....

bigdnew · 02-16-2010, 10:25 PM

i have run 33s on 15x7 before. currently i have 33s on 15x8 ralleys.

fla wildman · 02-16-2010, 11:16 PM

I ran 33x12.50x15 for years on my 83 k10 with stock rims with no lift.

y5mgisi · 02-17-2010, 02:52 AM

More often then not they will rub on the rear of the front fenders. Just sometimes though. Like pulling into a gas station or something like that.

Ceeten · 02-17-2010, 09:32 AM

It will "fit" but a 32-11.5 will be a better choice if you actually use it off road. The rear of the front fender will chew a tire up pretty good.

Damien · 02-17-2010, 01:15 PM

The rear edge of the fender opening should be cut back, or like someone I know, bead it in with a maul and put self tappers in to hold it. The truck is a nice

BATurbo · 02-28-2010, 11:32 PM

Thanks for the info updates.

BigDnew - Do you have any pics of what the 33's look like on a 15x8? Are you running 10.50s, 11.50s, or 12.50s??

Fla wildman - Didn'tg have any tire cutting or rubbing troubles?

Damien - I've seen trucks like you're describing many times, my goal is to get the 33s to fit at stock ride height so that any modifications won't be noticable to the untrained eye. How is Mankato these days? I used to live there, went to school there (MSU), and worked at the Chevy dealer for three years back in the early 90s.

Damien · 03-01-2010, 04:24 PM

Quote:

Originally Posted by BATurbo

Damien - I've seen trucks like you're describing many times, my goal is to get the 33s to fit at stock ride height so that any modifications won't be noticable to the untrained eye. How is Mankato these days? I used to live there, went to school there (MSU), and worked at the Chevy dealer for three years back in the early 90s.

Probably not a whole lot different. The bars keep changing owners and names. Campus has a few new buildings. Are you an AET Grad? I will hopefully graduate next spring.

BATurbo · 03-01-2010, 06:41 PM

Yes I am. Class of 95'. Dr. J would remember me. I doubt Kirk Ready is still there. Al Wadke still running the machine shop? I worked on twin-turbocharging my 70' for my senior project. Got a 67 page paper out of it. Dr J had that paper for two years before he graded it... Yep I remember Schooner nite at the Tross, Boot night at the Caledonia lounge, and mug nite at TJs downtown...

fla wildman · 03-01-2010, 08:32 PM

Quote:

Originally Posted by BATurbo

Thanks for the info updates.

BigDnew - Do you have any pics of what the 33's look like on a 15x8? Are you running 10.50s, 11.50s, or 12.50s??

Fla wildman - Didn'tg have any tire cutting or rubbing troubles?

Damien - I've seen trucks like you're describing many times, my goal is to get the 33s to fit at stock ride height so that any modifications won't be noticable to the untrained eye. How is Mankato these days? I used to live there, went to school there (MSU), and worked at the Chevy dealer for three years back in the early 90s.

no just ran them and on the stock wheels the tires never hit but when I put the new A/T tires and new wheels they did but that was do to back spacing[ATTACH] Name: scan0002.jpg
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bigarmzz · 03-01-2010, 06:57 PM

Quote:

Originally Posted by BATurbo

Has anyone tried running a 33x10.5 tire on a 15x8 ralleye wheel on a 78 Scottsdale shortbox 4x4 with stock suspension and body height?? I picked up a truck with 15 year old skins (31x10.5s on 15x8 ralleyes), and I'm looking to upgrade to a larger diameter tire to fill up the wheel well a little better. Looking for info on rub points or potential mods that would allow for the 33's on the stock ride set up. Any info would be appreciated. TIA

here's a truck i used to have (took awhile to find a pic of it), it had 33's and 8" rallys with no lift, i had no rubbing issues with it at all

Damien · 03-01-2010, 08:39 PM

Yep, All of those bars are closed. TJ's closed last year I think. No Kirk Ready, I've heard the name. Al is still in the EPL, and Jones has been chair for almost a year. So I guess you would be the original "Twin Turbo"? A guy put twins on a '95 Lightning 2 or 3 years ago so we called him Twin Turbo.

BATurbo · 03-02-2010, 12:29 AM

Fla Wildman & bigarmzz -

Those are some good lookin' trucks. That's the tire set up I'm lookin' for, the 31x10.50s on my truck now look dinky. Now I'm really looking forward to gettting some 33's. (can you say TAX CHECK!!). Thanks for the Pics!!

Damien -

WOW times must be tuff in southern Minnesota if all the bars are closing in a college town. I don't know if I was the first to put twin turbos on a sbc, but it was a fun project. I remember doing a WOT test on the dyno and snapping two piston skirts off, I blew the side tank off the radiator once. Those turbos sure did loosen that small block up. You could watch the video and see the pressure through the crankcase increasing as the test went on. By the time the test was done, it was blowing oil smoke like a old train engine. I did peg the 0-250 HP scale on the dyno the first power run I did though.

02-16-2010, 09:36 PM	#1
BATurbo Registered User Join Date: Mar 2008 Location: Warren, Mi Posts: 32	Anyone tried this Tire set-up?? Has anyone tried running a 33x10.5 tire on a 15x8 ralleye wheel on a 78 Scottsdale shortbox 4x4 with stock suspension and body height?? I picked up a truck with 15 year old skins (31x10.5s on 15x8 ralleyes), and I'm looking to upgrade to a larger diameter tire to fill up the wheel well a little better. Looking for info on rub points or potential mods that would allow for the 33's on the stock ride set up. Any info would be appreciated. TIA

02-16-2010, 10:23 PM	#2
Restrorob The One And Only !!! Join Date: Jan 2007 Location: Hole in the woods Florida Posts: 4,567	Re: Anyone tried this Tire set-up?? You may have a better chance of finding this info in the 4x4/off road section, Maybe Bob will move this over there for ya when he sees it..... __________________ 93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz ! The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. *"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!*

02-16-2010, 10:25 PM	#3
bigdnew Never Satisfied Join Date: Sep 2009 Location: Sherman, Texas Posts: 360	Re: Anyone tried this Tire set-up?? i have run 33s on 15x7 before. currently i have 33s on 15x8 ralleys.

02-16-2010, 11:16 PM	#4
fla wildman Registered User Join Date: Nov 2009 Location: st.cloud fla Posts: 76	Re: Anyone tried this Tire set-up?? I ran 33x12.50x15 for years on my 83 k10 with stock rims with no lift. __________________ 83 Chevy 4x4 stepside was a 6.2 stick now 350 auto 86 Cutlass with built 350 street/strip car 85 K5 all stock 2006 F250 6.0 the puller 69 c10 soon to be k30 too far gone to fix

02-17-2010, 02:52 AM	#5
y5mgisi Second Chance Program Join Date: Jun 2006 Location: Portland, OR Posts: 2,642	Re: Anyone tried this Tire set-up?? More often then not they will rub on the rear of the front fenders. Just sometimes though. Like pulling into a gas station or something like that.

02-17-2010, 09:32 AM	#6
Ceeten Registered User Join Date: Oct 2009 Location: Jay, Fl Posts: 126	Re: Anyone tried this Tire set-up?? It will "fit" but a 32-11.5 will be a better choice if you actually use it off road. The rear of the front fender will chew a tire up pretty good.

02-17-2010, 01:15 PM	#7
Damien Registered User Join Date: Mar 2007 Location: Farmington, MN Posts: 928	Re: Anyone tried this Tire set-up?? The rear edge of the fender opening should be cut back, or like someone I know, bead it in with a maul and put self tappers in to hold it. The truck is a nice __________________ I can still count my vehicles on two... wait three hands.

02-28-2010, 11:32 PM	#8
BATurbo Registered User Join Date: Mar 2008 Location: Warren, Mi Posts: 32	Re: Anyone tried this Tire set-up?? Thanks for the info updates. BigDnew - Do you have any pics of what the 33's look like on a 15x8? Are you running 10.50s, 11.50s, or 12.50s?? Fla wildman - Didn'tg have any tire cutting or rubbing troubles? Damien - I've seen trucks like you're describing many times, my goal is to get the 33s to fit at stock ride height so that any modifications won't be noticable to the untrained eye. How is Mankato these days? I used to live there, went to school there (MSU), and worked at the Chevy dealer for three years back in the early 90s.

03-01-2010, 06:41 PM	#10
BATurbo Registered User Join Date: Mar 2008 Location: Warren, Mi Posts: 32	Re: Anyone tried this Tire set-up?? Yes I am. Class of 95'. Dr. J would remember me. I doubt Kirk Ready is still there. Al Wadke still running the machine shop? I worked on twin-turbocharging my 70' for my senior project. Got a 67 page paper out of it. Dr J had that paper for two years before he graded it... Yep I remember Schooner nite at the Tross, Boot night at the Caledonia lounge, and mug nite at TJs downtown...

03-01-2010, 08:39 PM	#13
Damien Registered User Join Date: Mar 2007 Location: Farmington, MN Posts: 928	Re: Anyone tried this Tire set-up?? Yep, All of those bars are closed. TJ's closed last year I think. No Kirk Ready, I've heard the name. Al is still in the EPL, and Jones has been chair for almost a year. So I guess you would be the original "Twin Turbo"? A guy put twins on a '95 Lightning 2 or 3 years ago so we called him Twin Turbo. __________________ I can still count my vehicles on two... wait three hands.

03-02-2010, 12:29 AM	#14
BATurbo Registered User Join Date: Mar 2008 Location: Warren, Mi Posts: 32	Re: Anyone tried this Tire set-up?? Fla Wildman & bigarmzz - Those are some good lookin' trucks. That's the tire set up I'm lookin' for, the 31x10.50s on my truck now look dinky. Now I'm really looking forward to gettting some 33's. (can you say TAX CHECK!!). Thanks for the Pics!! Damien - WOW times must be tuff in southern Minnesota if all the bars are closing in a college town. I don't know if I was the first to put twin turbos on a sbc, but it was a fun project. I remember doing a WOT test on the dyno and snapping two piston skirts off, I blew the side tank off the radiator once. Those turbos sure did loosen that small block up. You could watch the video and see the pressure through the crankcase increasing as the test went on. By the time the test was done, it was blowing oil smoke like a old train engine. I did peg the 0-250 HP scale on the dyno the first power run I did though.



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