How wide of a wheel - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Wildstreak · 01-31-2010, 12:43 AM

I tried searching and couldnt find any real answers to my questions. this is for the 67-72. How wide of a wheel can I use before I have to modify my rear end? I would like to get as wide of a wheel as I can in the rear with out hitting the box.

thanks in advance

Wildstreak · 01-31-2010, 12:00 PM

by wheel, I mean the rim size. IM pretty sure Ive got the rubber size down, but have no clue what tire fits on what rim. I would like to run a 20'' rim in the rear and need to figure out how wide of a rim to order. is 10'' just right 12'' too much?

SCOTI · 01-31-2010, 12:39 PM

Depending on actual ride height, 10" will fit w/o modifying the tubs; 12" will require mini-tubs & notching out some of the bed floor.

GVizzle · 01-31-2010, 01:45 PM

I ran a 10" wide wheel with a 295 wide tire tucking in the rear and it was tight. I think the offset was 5.5 on the wider 12 bolt rear end.

Wildstreak · 01-31-2010, 03:23 PM

Thanks guys. Im going with a as much drop as I can without cutting the floor. Say I go with a 4/6 drop, will the 10" with 295 rub at at ride height? when you say wider 12 bolt, what years are longer or shorter? the rims are goin on a 68 burb.

SCOTI · 01-31-2010, 03:51 PM

Quote:

Originally Posted by Wildstreak

Thanks guys. Im going with a as much drop as I can without cutting the floor. Say I go with a 4/6 drop, will the 10" with 295 rub at at ride height? when you say wider 12 bolt, what years are longer or shorter? the rims are goin on a 68 burb.

Mid-70 & later rear housings (especially factory 5-lug rears) are wider.

72BlckButy · 01-31-2010, 06:49 PM

If you looking at a custom set of wheels, if you swap in a 67-70 rear end and swap it to 5-lug you can get a wider lip on the rear wheels.

SCOTI's right, I wouldn't run anything wider than a 10" wheel in the rear.

Wildstreak · 01-31-2010, 07:00 PM

Quote:

Originally Posted by 72BlckButy

If you looking at a custom set of wheels, if you swap in a 67-70 rear end and swap it to 5-lug you can get a wider lip on the rear wheels.

SCOTI's right, I wouldn't run anything wider than a 10" wheel in the rear.

that what I was after, a nice wide lip, I didnt even think that my 68 burb is a 6-lug, just slipped my mind I guess. 10" is what I was after, so thats good news. I'm converting the front to disk and might do the rear as well. To switch the rear to 5-lug, would I just need new axles?

72BlckButy · 01-31-2010, 07:08 PM

Yep, check in with ECE or CPP and they should hook you up fairly reasonably.

Just remember when you add disc brakes it will widen the front track width by 1.5" (.75" on each side).

*vegaschevy* · 02-01-2010, 05:32 AM

Quote:

Originally Posted by Wildstreak

Thanks guys. Im going with a as much drop as I can without cutting the floor. Say I go with a 4/6 drop, will the 10" with 295 rub at at ride height? when you say wider 12 bolt, what years are longer or shorter? the rims are goin on a 68 burb.

Check my build thread. i just did a 20x10 in the rear with a 295/40-20 tire and it rubs ALOT. Ill be raising the rear to about a 6.5" drop to make it driveable. I have the wider rear end with 5.5" backspaced wheel. its the MAXIMUM size.

SCOTI · 02-01-2010, 09:34 AM

Quote:

Originally Posted by vegaschevy

Check my build thread. i just did a 20x10 in the rear with a 295/40-20 tire and it rubs ALOT. Ill be raising the rear to about a 6.5" drop to make it driveable. I have the wider rear end with 5.5" backspaced wheel. its the MAXIMUM size.

Rubbing equally on both sides?

Wildstreak · 02-01-2010, 06:44 PM

I think you went lower than 7" in the rear, those trailing arms are making it really low. after looking at that tho, Idk if thats even low enough for me

, I have to figure out how I wanna get lower now

nastyc10 · 02-02-2010, 02:18 AM

I'm running 295-40-20 on 20x10's with 5" backspacing and no rubbing at all. its real close to the fender though and I'm bagged with a stepnotch. I did remove the factory tubs.

01-31-2010, 12:43 AM	#1
Wildstreak "something witty here" Join Date: Apr 2009 Location: Salmo, B.C, Canada Posts: 966	How wide of a wheel I tried searching and couldnt find any real answers to my questions. this is for the 67-72. How wide of a wheel can I use before I have to modify my rear end? I would like to get as wide of a wheel as I can in the rear with out hitting the box. thanks in advance __________________ 57 chevy 4x4 70 swb fleetside 4x4 68 burb 2wd: 71 burb 2wd: 350 4spd 71 lwb fleetside 4x4: 350/sm465/205/3.07 eaton posi rear 72 lwb fleetside Cheyenne 454/th400 1991 GMC V3500 CC 4x4

01-31-2010, 12:00 PM	#2
Wildstreak "something witty here" Join Date: Apr 2009 Location: Salmo, B.C, Canada Posts: 966	Re: How wide of a wheel by wheel, I mean the rim size. IM pretty sure Ive got the rubber size down, but have no clue what tire fits on what rim. I would like to run a 20'' rim in the rear and need to figure out how wide of a rim to order. is 10'' just right 12'' too much? __________________ 57 chevy 4x4 70 swb fleetside 4x4 68 burb 2wd: 71 burb 2wd: 350 4spd 71 lwb fleetside 4x4: 350/sm465/205/3.07 eaton posi rear 72 lwb fleetside Cheyenne 454/th400 1991 GMC V3500 CC 4x4

01-31-2010, 12:39 PM	#3
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,066	Re: How wide of a wheel Depending on actual ride height, 10" will fit w/o modifying the tubs; 12" will require mini-tubs & notching out some of the bed floor. __________________ 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.*

01-31-2010, 01:45 PM	#4
GVizzle Registered User Join Date: Oct 2008 Location: San Clemente, CA Posts: 405	Re: How wide of a wheel I ran a 10" wide wheel with a 295 wide tire tucking in the rear and it was tight. I think the offset was 5.5 on the wider 12 bolt rear end.

01-31-2010, 03:23 PM	#5
Wildstreak "something witty here" Join Date: Apr 2009 Location: Salmo, B.C, Canada Posts: 966	Re: How wide of a wheel Thanks guys. Im going with a as much drop as I can without cutting the floor. Say I go with a 4/6 drop, will the 10" with 295 rub at at ride height? when you say wider 12 bolt, what years are longer or shorter? the rims are goin on a 68 burb. __________________ 57 chevy 4x4 70 swb fleetside 4x4 68 burb 2wd: 71 burb 2wd: 350 4spd 71 lwb fleetside 4x4: 350/sm465/205/3.07 eaton posi rear 72 lwb fleetside Cheyenne 454/th400 1991 GMC V3500 CC 4x4

01-31-2010, 06:49 PM	#7
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: How wide of a wheel If you looking at a custom set of wheels, if you swap in a 67-70 rear end and swap it to 5-lug you can get a wider lip on the rear wheels. SCOTI's right, I wouldn't run anything wider than a 10" wheel in the rear. __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)

01-31-2010, 07:08 PM	#9
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: How wide of a wheel Yep, check in with ECE or CPP and they should hook you up fairly reasonably. Just remember when you add disc brakes it will widen the front track width by 1.5" (.75" on each side). __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package) Last edited by 72BlckButy; 01-31-2010 at 07:09 PM.

02-01-2010, 06:44 PM	#12
Wildstreak "something witty here" Join Date: Apr 2009 Location: Salmo, B.C, Canada Posts: 966	Re: How wide of a wheel I think you went lower than 7" in the rear, those trailing arms are making it really low. after looking at that tho, Idk if thats even low enough for me, I have to figure out how I wanna get lower now __________________ 57 chevy 4x4 70 swb fleetside 4x4 68 burb 2wd: 71 burb 2wd: 350 4spd 71 lwb fleetside 4x4: 350/sm465/205/3.07 eaton posi rear 72 lwb fleetside Cheyenne 454/th400 1991 GMC V3500 CC 4x4

02-02-2010, 02:18 AM	#13
nastyc10 Registered User Join Date: Aug 2009 Location: Austin, Tx Posts: 516	Re: How wide of a wheel I'm running 295-40-20 on 20x10's with 5" backspacing and no rubbing at all. its real close to the fender though and I'm bagged with a stepnotch. I did remove the factory tubs.

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