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#1 |
Registered User
Join Date: Jan 2003
Location: Seattle WA
Posts: 1,466
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15x12 backspacing
Just thinking online.....does anyone have any comments on backspacing/offset for pair of 15X12 wheels for the rear of 71 Cheyenne fleetside longbed? I would really like to keep them insode the wheel well. Tires will be 325/50/15s.
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FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection |
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#2 |
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Join Date: Jan 2002
Location: Houston, TX
Posts: 2,144
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well if you are keeping your axle stock (i.e. not narrowing it) and you want the outside of the 325/50 to be approximatly in the same position of your current tire. then its pretty easy. say you have a 15X8 with 4.5 backspace and you want to go to a 15X12. just add the extra width of the wheel to the backspace, this effectively puts all of that wider rubber inward of where you current tires are now. the 12 ich wheel is 4 inches wider than the 8 so add 4 inches to the backspace. 8.5 backspace on the 12 inch wheel. this wheel would have to be custom made and you would have to look out to make sure its not gonna rub your frame or springs on the inside. i don't think i've ever seen a 15X12 on a non narrowed axle that sits inside the fender. thats alot of wheel. reason i am going with 15X10's with a 325/50 bfg drag radial
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'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 |
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#3 |
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Join Date: Jan 2002
Location: Houston, TX
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i've been doing some research (b/c i'm wanting some custom offset 15x10 truck rallies made for the rear of mine) and i found this chart on stockton wheels website. it shows the backspace they can custom make wheels of a particlular width for. so you could actulay get 12's with 8.5 b.s. and shove all that tire inboard. thats the sleeper look i'd liek to have with mine
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'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 |
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#4 |
Registered User
Join Date: Jan 2003
Location: Seattle WA
Posts: 1,466
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thanks Ryan....I have 15X10's now but thought 12's would be cool.
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FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection |
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#5 |
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Join Date: Aug 2003
Location: D/FW TX
Posts: 430
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A freind of mine has 15x12 welds on his 72, with 7.5 inch backspacing. The suspension is all stock and clears fine but you need to mini tub it or widen the wheelwell about three inches so you don't rub on the inside.
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2004 Kawasaki KLR Always looking for a cheap driver |
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#6 |
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Join Date: Jan 2000
Location: Orange Beach, Alabama
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More info anybody I am thinking about doing the same thing.
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71 cheyenne 402 th400 swb 71 camper special (PARTS TRUCK) 70 Stepside swb 350 |
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#7 |
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Join Date: Jan 2003
Location: Seattle WA
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67:
What size tire was your friend running on his truck? Can you get any pics?
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FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection Last edited by miket; 10-30-2003 at 11:54 AM. |
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#8 |
I hate trannys
Join Date: Dec 2001
Location: Bakersfield,CA
Posts: 160
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I would also like to know the tire size and see some pics of possable.
Thanks adam
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70 SWB 481 ci, TH-400, Edlebrok Victor Jr. intake, Holley street avenger 770, Dynomax ceramic coated headers. Dual flowmasters. and only 3516134 more little things to do. |
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#9 |
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Join Date: Aug 2003
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miket and adam12 - I'll try to get some info and pics tomorrow night.
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2004 Kawasaki KLR Always looking for a cheap driver |
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#10 |
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Location: Seattle WA
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Thanks 67 I really appreciate it.
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FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection |
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#11 |
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Join Date: Jan 2003
Location: Seattle WA
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67,
Any success on pics?
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FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection |
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#12 |
Registered User
Join Date: Jan 2000
Location: Orange Beach, Alabama
Posts: 133
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TTT
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71 cheyenne 402 th400 swb 71 camper special (PARTS TRUCK) 70 Stepside swb 350 |
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#13 |
Registered User
Join Date: Jan 2000
Location: Orange Beach, Alabama
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TTT
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71 cheyenne 402 th400 swb 71 camper special (PARTS TRUCK) 70 Stepside swb 350 |
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#14 |
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Join Date: Dec 2004
Location: Shreveport, LA
Posts: 137
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Re: 15x12 backspacing
Ttt
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#15 |
Active Member
Join Date: Oct 2006
Location: Ohio
Posts: 1,643
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Re: 15x12 backspacing
Here are 2 shots of my truck
18.5" Mickey's The bed has been mini tubbed - the frame, shock location etc is all stock. The wheels are factory rally wheel with a spacer inserted into, just what you folks have been talking about. I like this since I can always take the truck back to "stock" is I wanted to and for know I get a ton of thumbs up
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