Widest rear wheel possible? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Doug76 · 09-03-2005, 12:34 AM

Whats the widest rear rim/tire combo you can run on the rear with a coil spring rear?

raidermanny · 09-03-2005, 01:31 AM

I'm wondering the same thing

jsbgump · 09-03-2005, 01:32 AM

I believe the widest rim you can run is 12in. I have no clue what size rubber would work.

Rokcrln · 09-03-2005, 01:41 AM

I am running 11" rims with 335/35/17's they are the dodge vipper tires. I had to do a mini tub to the bed but now I think I want bigger. I can fit about a 12-13" rim and would love to find a 355 for the back in a 20" rim dia.

Kevin

lowrider79 · 09-03-2005, 06:53 AM

I have 10 x 15 rims, P295 50 R15's. I did not have to modify the body. They protrude about 1/2" from the outside of the side of the truck. I believe the offset is 4 or 4 1/2 inches on the rim. The tires on that rim measure 12 7/8 inches wide.

Robert1970C20rstbukt · 09-03-2005, 05:03 PM

I have 33-12.5-16.5's on the back of my truck with 16.5x9.75 rims. The acutal width from lip to lip on the rims is 12 and that's as wide as I'd go. I also have the original cab and chassis rear so it's kinda narrow.

kingsolver72 · 09-03-2005, 05:23 PM

I have 12" rims with a 7" backspace,tires are P295/50R15 on my 69,Mine to is tubbed out.

SCOTI · 09-03-2005, 08:00 PM

I used to have 15x14" vette-ralleys w/31x18.5x15 Mickey T Sportsmans on a stock width 67/8 12-bolt, coil spring suspended, stock frame rail 68. All that was required was removal of the outside bumpstop, mini-tubbing & custom off-set wheels.

onetoncrewcab · 09-03-2005, 08:25 PM

I was running around 8 or 10" wide aluminum slots with N50 tires on my truck. From what I remembered, they would rub on the inside of the rear wheel well whenever I turned a corner. Otherwise they fit in the opening perfectly.
Mike

Doug76 · 09-04-2005, 01:30 PM

Quote:

Originally Posted by SCOTI

I used to have 15x14" vette-ralleys w/31x18.5x15 Mickey T Sportsmans on a stock width 67/8 12-bolt, coil spring suspended, stock frame rail 68. All that was required was removal of the outside bumpstop, mini-tubbing & custom off-set wheels.

Man thats alot of tire..I would be interested in the specifics on how much you took out of the bed..I thought about doing some aluminum wheel tubs myself. Do you have any pics of the rear setup?

Thanks,

Doug

SCOTI · 09-04-2005, 04:01 PM

Quote:

Originally Posted by Doug76

Man thats alot of tire..I would be interested in the specifics on how much you took out of the bed..I thought about doing some aluminum wheel tubs myself. Do you have any pics of the rear setup? Thanks, Doug

The rear set-up was just an average stock length 67-68 12bolt rear housing. The mods were just to the floor & tubs + the custom offset wheels. I cut the floor all the way to the outer edge of the frame & had the stock tubs stretched to fit. I also stepped the bed floor for clearance since my truck is pretty low.

*72CSTC5* · 09-04-2005, 04:14 PM

The bed of your truck looks good. Nice job.

SCOTI · 09-04-2005, 04:25 PM

The bed floor measures 19.5" from the cut line to the original outer edge.

Quote:

Originally Posted by 72CSTC5

The bed of your truck looks good. Nice job.

Thanks for the props. I did the floor w/the help of a friend that specialty welds thin stuff (aluminum mostly but sheetmetal too) in a sheetmetal fab shop. Another friend helped significantly w/the tubs.

I can't take the credit.

Purs · 09-04-2005, 05:06 PM

beautiful! I hope turns out 1/2 that good.

BowTieMan · 09-04-2005, 07:46 PM

Quote:

Originally Posted by SCOTI

I used to have 15x14" vette-ralleys w/31x18.5x15 Mickey T Sportsmans on a stock width 67/8 12-bolt, coil spring suspended, stock frame rail 68. All that was required was removal of the outside bumpstop, mini-tubbing & custom off-set wheels.

Got any pictures of it with the wheels on there?

SCOTI · 09-04-2005, 08:02 PM

Quote:

Originally Posted by BowTieMan

Got any pictures of it with the wheels on there?

Only pics I have are some older prints but I don't have a scanner.

Oborny71 · 09-04-2005, 08:19 PM

I'm running 325/50s on a 15x10" rim with about 3/4 inch to spare on each side without any modifications. my truck has a 4/6 drop. keep in mind the 69-72 rearends are wider by about 1 1/2" . I am running a 71' rear in my 67' .

Doug76 · 09-05-2005, 12:02 AM

Scoti What offset are you using for the wheel?

Robznob11 · 09-05-2005, 12:12 AM

i have 12 wide drag lites with 6.5 bs im going to try to fit a 29.15.5 under there its probably going to be tight i have a 68 12 bolt measurements shows it will clear to be safe get the 7.5 bs you do have to tub it though

twisted racing · 09-05-2005, 03:34 PM

Quote:

Originally Posted by SCOTI

The rear set-up was just an average stock length 67-68 12bolt rear housing. The mods were just to the floor & tubs + the custom offset wheels. I cut the floor all the way to the outer edge of the frame & had the stock tubs stretched to fit. I also stepped the bed floor for clearance since my truck is pretty low.

Hey can you tell me what size rims and tires you are going to run with the back spacing too, my bed looks just like your but i havent finshed it yet and is your rear end 5 or 6 lug thanks alot if you cna help me

SCOTI · 09-05-2005, 04:04 PM

Quote:

Originally Posted by twisted racing

Hey can you tell me what size rims and tires you are going to run with the back spacing too, my bed looks just like your but i havent finshed it yet and is your rear end 5 or 6 lug thanks alot if you cna help me

It had 15x14" steelies w/9.75bs & 21x18.5x15 Mickey Thompson Sportsmans. That worked for me but you should measure your own combination to be sure. Since the rear wasn't narrowed & I used custom back-spacing, you have to be able to drop the suspension to fit the wheel/tire into place. No big deal but it was extra work.

I'll be putting some 20x11 or 12" wide wheels on there now. The big tire thing was temporary.

Purs · 09-05-2005, 04:08 PM

Quote:

Originally Posted by SCOTI

It had 15x14" steelies w/9.75bs & 21x18.5x15 Mickey Thompson Sportsmans.

do you have any good pics with that combo? thanks!

SCOTI · 09-05-2005, 05:10 PM

Quote:

Originally Posted by SCOTI

Only pics I have are some older prints but I don't have a scanner.

Wheels & tires are long gone now.

Purs · 09-05-2005, 05:24 PM

Quote:

Originally Posted by SCOTI

Only pics I have are some older prints but I don't have a scanner.

sorry SCOTI, just reread the whole post....

SCOTI · 09-05-2005, 06:26 PM

Not a problem.

09-03-2005, 12:34 AM	#1
Doug76 This S&*! Is expensive! Join Date: Feb 2005 Location: Mechanicsville,Va Posts: 57	Widest rear wheel possible? Whats the widest rear rim/tire combo you can run on the rear with a coil spring rear?

09-03-2005, 01:32 AM	#3
jsbgump Gone Fishing Join Date: Aug 2005 Location: Fort Worth, Texas 76135 Posts: 12,361	I believe the widest rim you can run is 12in. I have no clue what size rubber would work. __________________ 68 Chevy Short Fleetside LSX Swap Under Way 3.73 posi 2.5/4 drop Frame of resto has been started 2022 Hyundai Tucson Limited 2019 Chevy Traverse Redline Edition Wifes Ride Build Thread http://67-72chevytrucks.com/vboard/s...=1#post3483616

09-03-2005, 05:03 PM	#6
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	I have 33-12.5-16.5's on the back of my truck with 16.5x9.75 rims. The acutal width from lip to lip on the rims is 12 and that's as wide as I'd go. I also have the original cab and chassis rear so it's kinda narrow. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

09-03-2005, 08:00 PM	#8
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	I used to have 15x14" vette-ralleys w/31x18.5x15 Mickey T Sportsmans on a stock width 67/8 12-bolt, coil spring suspended, stock frame rail 68. All that was required was removal of the outside bumpstop, mini-tubbing & custom off-set wheels. __________________ 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.*

09-03-2005, 08:25 PM	#9
onetoncrewcab One of my kids. Cute eh? Join Date: Oct 2001 Location: Mitchell, SD Posts: 1,286	I was running around 8 or 10" wide aluminum slots with N50 tires on my truck. From what I remembered, they would rub on the inside of the rear wheel well whenever I turned a corner. Otherwise they fit in the opening perfectly. Mike __________________ If a kid asks where rain comes from, I think a cute thing to tell him is “God is crying.” And if he asks why God is crying, another cute thing to tell him is “Probably because of something you did. John 3:16 2006 Chevy HHR 2000 Dodge Durango 1985 Jeep CJ-7 1970 Chevy Pickup

09-03-2005, 01:31 AM	#2
raidermanny Senior Member Join Date: Dec 2004 Location: Fremont, Ca Posts: 260	I'm wondering the same thing

09-03-2005, 01:41 AM	#4
Rokcrln Senior Member Join Date: Jul 2005 Location: Winters Ca. 95694 Posts: 4,843	I am running 11" rims with 335/35/17's they are the dodge vipper tires. I had to do a mini tub to the bed but now I think I want bigger. I can fit about a 12-13" rim and would love to find a 355 for the back in a 20" rim dia. Kevin

09-03-2005, 06:53 AM	#5
lowrider79 Registered User Join Date: Jul 2004 Location: Shakopee Minnesota Posts: 174	I have 10 x 15 rims, P295 50 R15's. I did not have to modify the body. They protrude about 1/2" from the outside of the side of the truck. I believe the offset is 4 or 4 1/2 inches on the rim. The tires on that rim measure 12 7/8 inches wide.

09-03-2005, 05:23 PM	#7
kingsolver72 10/30/19 Join Date: Aug 2004 Location: ottawa kansas Posts: 5,245	I have 12" rims with a 7" backspace,tires are P295/50R15 on my 69,Mine to is tubbed out.

09-04-2005, 04:14 PM	#12
72CSTC5 Account Suspended Join Date: Nov 2004 Location: Deer Park, Tx. Posts: 2,522	The bed of your truck looks good. Nice job.

09-04-2005, 05:06 PM	#14
Purs Got Big Block? Join Date: Apr 2000 Location: West Texas Posts: 1,510	beautiful! I hope turns out 1/2 that good. Attached Images __________________ "Experience is what you get when you didn't get what you wanted." Last edited by Purs; 09-04-2005 at 05:07 PM.

09-04-2005, 08:19 PM	#17
Oborny71 Registered User Join Date: Apr 2001 Location: Lincoln, Nebraska Posts: 587	I'm running 325/50s on a 15x10" rim with about 3/4 inch to spare on each side without any modifications. my truck has a 4/6 drop. keep in mind the 69-72 rearends are wider by about 1 1/2" . I am running a 71' rear in my 67' . __________________ 67 Chevy SWB - goal of a 1,000 hp weekend cruiser Last edited by Oborny71; 09-04-2005 at 08:24 PM.

09-05-2005, 12:02 AM	#18
Doug76 This S&*! Is expensive! Join Date: Feb 2005 Location: Mechanicsville,Va Posts: 57	Scoti What offset are you using for the wheel?

09-05-2005, 12:12 AM	#19
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	mine are i have 12 wide drag lites with 6.5 bs im going to try to fit a 29.15.5 under there its probably going to be tight i have a 68 12 bolt measurements shows it will clear to be safe get the 7.5 bs you do have to tub it though

09-05-2005, 06:26 PM	#25
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Not a problem. __________________ 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.*



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