Widest rear rims and tires - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mike63078 · 03-26-2004, 11:11 AM

Ok guys I did a search and found that on 67-72's everyone siad you can run a 15x12 with 7.5 BS on the rear of our trucks with just a mini tub. Is this the same for ours? I would like to run a the widest tire I can out back and have to do body work to the bed anyway so might as well do it before i start. Let me know what everyone thinks

thanks
Mike

kevhill85 · 03-26-2004, 07:36 PM

i'm running a 15x10 with 4.5 bs .

SCOTI · 03-26-2004, 07:49 PM

Actually, on 67-72's you can go up to 14" wide. I had 15x14's w/9.75" backspacing, a stock width 67/8 12bolt, & trailing arms. This combo used a 31x18.5x15 Mickey Thompson Sportsman. I stretched my bed tubs all the way to the frame (they're approx 20" wide). You cannot run this set-up w/lowering blocks.

With the 73-up models, you can't go that wide w/o moving the leaf springs inboard of the frame rails. If your not moving the springs, but widen the wheel tubs, you could prob fit 12" wide wheels w/about 6-6.5" of back spacing.

low 84 · 03-26-2004, 10:14 PM

you might be able to tuck a 15.5 inch wide tire on a 15x12 with the leaf springs there but you'll have to do some measuring on your own to get your back space right casue it will be pretty close

TIMSPEED · 03-26-2004, 10:36 PM

With a flip kit out back, I run 17x9½ with a 5½" backspacing. I have a set of 255/55's on their right now, but I PLAN to put 275/50 17's on soon.

*1FaastC10* · 03-27-2004, 12:05 PM

uh, Tim, we're talking WIDE tires here. the tires that came stock on my 91 are wider than the ones you mentioned.

highboy_04 · 03-29-2004, 02:52 AM

your truck came stock with rims that are wider than 9.5"?

mike63078 · 05-12-2004, 11:01 PM

any other input i am getting ready to buy, here are my choices in a prostar

15'' x 12''
Rear Spacing: 4.5''

15'' x 12''
Rear Spacing: 6.5'' $199

or
15'' x 12''
Rear Spacing: 7.5''

also what size tires can i use? I will be streching my wheel wells so let me know

thanks
mike

C-10volvo · 05-12-2004, 11:37 PM

i have fitted a 22 by 12 inch wheel with a 325/40/22 tire with no clearance issues. it has no drop either.

mike63078 · 05-13-2004, 07:25 AM

what kind of back spacing?

**N2TRUX** · 05-13-2004, 08:13 AM

Quote:

Originally Posted by 1FaastC10

uh, Tim, we're talking WIDE tires here. the tires that came stock on my 91 are wider than the ones you mentioned.

:p

03-26-2004, 11:11 AM	#1
mike63078 Registered User Join Date: Mar 2003 Location: Horsham PA Posts: 153	Widest rear rims and tires Ok guys I did a search and found that on 67-72's everyone siad you can run a 15x12 with 7.5 BS on the rear of our trucks with just a mini tub. Is this the same for ours? I would like to run a the widest tire I can out back and have to do body work to the bed anyway so might as well do it before i start. Let me know what everyone thinks thanks Mike

03-26-2004, 07:36 PM	#2
kevhill85 91 SWB 383 Join Date: Feb 2003 Location: Crandall,TX Posts: 643	i'm running a 15x10 with 4.5 bs . __________________ 96 2dr Tahoe protruning LS1 347/4L60L, PSI harness, body dropped, 4link, 6lug conv, narrowed rearend, Schoenfeld headers, 2600 stall, 317 heads milled .040, http://photobucket.com/albums/q169/k...ahoe prostreet

03-26-2004, 07:49 PM	#3
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,963	Actually, on 67-72's you can go up to 14" wide. I had 15x14's w/9.75" backspacing, a stock width 67/8 12bolt, & trailing arms. This combo used a 31x18.5x15 Mickey Thompson Sportsman. I stretched my bed tubs all the way to the frame (they're approx 20" wide). You cannot run this set-up w/lowering blocks. With the 73-up models, you can't go that wide w/o moving the leaf springs inboard of the frame rails. If your not moving the springs, but widen the wheel tubs, you could prob fit 12" wide wheels w/about 6-6.5" of back spacing. __________________ 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.*

03-26-2004, 10:14 PM	#4
low 84 Registered User Join Date: Jan 2002 Location: Houston, TX Posts: 2,144	you might be able to tuck a 15.5 inch wide tire on a 15x12 with the leaf springs there but you'll have to do some measuring on your own to get your back space right casue it will be pretty close __________________ '51 F100, backhalf with a narrowed 9 and coil overs, 18.5" mickeys, monte front clip, +400" sbc in the works '05 1500 Crew Cab RIP '84 swb 5/7 drop, solid cammed 408 w/ fully ported dart heads, th350 w/ 10 inch hughes, 12 bolt w/ 3.73 richmonds and a locker '80 swb 4x4 in progress: 7" lift, 350 th350/np205, d44 and 1.5" ORD tie rod, 14BFF w/discs , armored diff covers, 40" MTR's

03-26-2004, 10:36 PM	#5
TIMSPEED Join Date: Jan 2003 Location: Modesto, CA Posts: 1,321	With a flip kit out back, I run 17x9½ with a 5½" backspacing. I have a set of 255/55's on their right now, but I PLAN to put 275/50 17's on soon. __________________ I have a few cars... See Them Here

03-27-2004, 12:05 PM	#6
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	uh, Tim, we're talking WIDE tires here. the tires that came stock on my 91 are wider than the ones you mentioned.

03-29-2004, 02:52 AM	#7
highboy_04 Registered User Join Date: Mar 2003 Location: kansas Posts: 1,071	your truck came stock with rims that are wider than 9.5"? __________________ '67 c10 350/th350

05-12-2004, 11:01 PM	#8
mike63078 Registered User Join Date: Mar 2003 Location: Horsham PA Posts: 153	any other input i am getting ready to buy, here are my choices in a prostar 15'' x 12'' Rear Spacing: 4.5'' 15'' x 12'' Rear Spacing: 6.5'' $199 or 15'' x 12'' Rear Spacing: 7.5'' also what size tires can i use? I will be streching my wheel wells so let me know thanks mike

05-12-2004, 11:37 PM	#9
C-10volvo Registered User Join Date: May 2003 Location: Lake Oswego, Oregon Posts: 1,028	i have fitted a 22 by 12 inch wheel with a 325/40/22 tire with no clearance issues. it has no drop either. __________________ Ken Morgan For fun: 1964 Volvo 122 For slow: 1984 Chevrolet C-10 For everything else: 1997 BMW M3

05-13-2004, 07:25 AM	#10
mike63078 Registered User Join Date: Mar 2003 Location: Horsham PA Posts: 153	what kind of back spacing?



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