Backspacing on 17x9.5 wheels - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ackattack · 05-04-2004, 12:07 AM

I'm looking at getting new wheels, and I need to know if 5.25" back spacing will work.

I have drop spindles on the front and rear springs in the back if that helps. I'm also planning on using a 275/50/17 tire.

If anyone has pictures of this size wheel on their truck I'd like to see them.

Thanks

boozel67 · 05-04-2004, 05:49 AM

mine are close to that size 17x9 with 4.25 backspaceing with 275/55-17 all four corners.

gbkwork · 05-04-2004, 06:59 PM

I purchased a set of Torq Thrust II's in this size with the stock 5.5" backspacing and have 275/50's on back. My truck is a fleetside and I am running ECE airbags. At ride height, I can rub the insides of the tires on the inner fenders if I get too much of an angle on the rear axle (entering a driveway for instance). I was forced to purchase 1.25" spacers for the rear axle. A 4" to 4.5" backspacing should take care of the problem.

Good luck.

butter · 05-04-2004, 09:49 PM

Would like more info.

gbkwork · 05-04-2004, 10:21 PM

Can you be more specific as to the additional information you would like? I could ramble, but can't be sure it would address your questions.

Ackattack · 05-05-2004, 12:27 AM

Quote:

Originally Posted by gbkwork

Can you be more specific as to the additional information you would like? I could ramble, but can't be sure it would address your questions.

what size are those wheels?

I can also get 17x8 in 4.5 backspacing.

Just an FYI here are the wheels I'm planning on getting:

gbkwork · 05-05-2004, 01:33 AM

As the title of my post mentioned, I am running 17" x 9.5" (5.5" backspacing) on the back, and 17" x 8" (4" backspacing) on the front. The fronts fit great with 255/50's. The rears caused a problem. If you are set to go with the 17" x 9.5" size, I would recommend a 4.25" - 4.5" backspacing, thereby shifting the tires outward from the axle and providing the added clearance from the inner fenders on the rear.

Slammed67 · 05-05-2004, 09:24 AM

I have 18"x9.5" wheels on the back of my '67 (however, I have the '71-'72 wider rear end). My wheels have 5.25" backspacing and my tires are 285/40/18 (11.22" wide). I've had only very slight rubbing on the inner wheel tub, but my ride height is pretty low also.

05-04-2004, 12:07 AM	#1
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,525	Backspacing on 17x9.5 wheels I'm looking at getting new wheels, and I need to know if 5.25" back spacing will work. I have drop spindles on the front and rear springs in the back if that helps. I'm also planning on using a 275/50/17 tire. If anyone has pictures of this size wheel on their truck I'd like to see them. Thanks __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

05-04-2004, 05:49 AM	#2
boozel67 FORSALE Join Date: Apr 2003 Location: central pa Posts: 95	mine are close to that size 17x9 with 4.25 backspaceing with 275/55-17 all four corners. Attached Images __________________ 1967 chevy 1/2 ton short step

05-04-2004, 06:59 PM	#3
gbkwork Registered User Join Date: Oct 2002 Location: Chico, CA Posts: 39	17" x 9.5" Wheel Backspacing I purchased a set of Torq Thrust II's in this size with the stock 5.5" backspacing and have 275/50's on back. My truck is a fleetside and I am running ECE airbags. At ride height, I can rub the insides of the tires on the inner fenders if I get too much of an angle on the rear axle (entering a driveway for instance). I was forced to purchase 1.25" spacers for the rear axle. A 4" to 4.5" backspacing should take care of the problem. Good luck. __________________ '72 Custom LWB 383 ci, Lunati 213 / 219 cam (60101L), 2.02/1.6 heads, Crane roller rockers, HPC coated ramhorns, FIRST TPI, '90 Corvette ECM, , Built 700R4, 3.73 Eaton Posi 12-bolt, Magnaflow dual exhaust, PW, Keyless DL, ECE Hidden Hitch, New chrome all around, 17" Torq Thrust II's, 255/50 & 275/50 Nittos, ART airbags, Rick's custom tank w/ custom in-bed filler, '02 Silverado seats, Rod Doors headliner / A-pillar covers and door panels.

05-04-2004, 09:49 PM	#4
butter Registered User Join Date: Jan 2000 Location: Orange Beach, Alabama Posts: 133	Would like more info. __________________ 71 cheyenne 402 th400 swb 71 camper special (PARTS TRUCK) 70 Stepside swb 350

05-04-2004, 10:21 PM	#5
gbkwork Registered User Join Date: Oct 2002 Location: Chico, CA Posts: 39	Can you be more specific as to the additional information you would like? I could ramble, but can't be sure it would address your questions. __________________ '72 Custom LWB 383 ci, Lunati 213 / 219 cam (60101L), 2.02/1.6 heads, Crane roller rockers, HPC coated ramhorns, FIRST TPI, '90 Corvette ECM, , Built 700R4, 3.73 Eaton Posi 12-bolt, Magnaflow dual exhaust, PW, Keyless DL, ECE Hidden Hitch, New chrome all around, 17" Torq Thrust II's, 255/50 & 275/50 Nittos, ART airbags, Rick's custom tank w/ custom in-bed filler, '02 Silverado seats, Rod Doors headliner / A-pillar covers and door panels.

05-05-2004, 01:33 AM	#7
gbkwork Registered User Join Date: Oct 2002 Location: Chico, CA Posts: 39	As the title of my post mentioned, I am running 17" x 9.5" (5.5" backspacing) on the back, and 17" x 8" (4" backspacing) on the front. The fronts fit great with 255/50's. The rears caused a problem. If you are set to go with the 17" x 9.5" size, I would recommend a 4.25" - 4.5" backspacing, thereby shifting the tires outward from the axle and providing the added clearance from the inner fenders on the rear. __________________ '72 Custom LWB 383 ci, Lunati 213 / 219 cam (60101L), 2.02/1.6 heads, Crane roller rockers, HPC coated ramhorns, FIRST TPI, '90 Corvette ECM, , Built 700R4, 3.73 Eaton Posi 12-bolt, Magnaflow dual exhaust, PW, Keyless DL, ECE Hidden Hitch, New chrome all around, 17" Torq Thrust II's, 255/50 & 275/50 Nittos, ART airbags, Rick's custom tank w/ custom in-bed filler, '02 Silverado seats, Rod Doors headliner / A-pillar covers and door panels.

05-05-2004, 09:24 AM	#8
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	I have 18"x9.5" wheels on the back of my '67 (however, I have the '71-'72 wider rear end). My wheels have 5.25" backspacing and my tires are 285/40/18 (11.22" wide). I've had only very slight rubbing on the inner wheel tub, but my ride height is pretty low also. __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

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