Trying to get concrete experiences: Wheel Backspacing, 4" lifts, 37" tires - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 12-14-2010, 06:27 AM Thread Starter
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Trying to get concrete experiences: Wheel Backspacing, 4" lifts, 37" tires

All,
I've searched the board for the past couple of days (the 'net as well), and as usual I've come up with a multitude of contradictions.
Im looking at either the Rubicon Express 4" or the Procomp 4" (All spring) lifts. While I fully understand that 35" tires will fit - I've seen some people supposedly fitting 37" tires w/o 'rubbing'. Yet others saying that it cannot be done....So my questions are:

For those who have done it:
-What did you have to trim (If anything)
-What is your specific wheel/tire setup. Rim Size/Width, Tire Size, and Backspacing

For those who say it cannot be done:
-Have you tried yourself ?
-If so, where was it rubbing ? This is most important, as rubbing on the springs maybe cured with the proper backspacing....

Thanks,
Steve

2000 F350 SCLB
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post #2 of 5 Old 12-14-2010, 06:32 AM
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I guess I'll weigh in here. I've got a 6.5 Pro Comp lift on my truck. 35x12.50R20's on 20x10's with a -25 offset. When I turn, my tires miss the lower front valence by about 1/2". 37's would definitely rub on my truck if I didn't trim anything I do not rub the springs with my setup...

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post #3 of 5 Old 12-14-2010, 05:06 PM
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a 4" lift with a 9" wide wheel and 4.5" backspacing with a 37x12.50 tire should not rub. I did the setup on my buddies truck and did not have to trim anything, and it does not rub the leaf springs.

2008 F350 6.4 CC/SB
Blackmaxx, S&B, MBRP 4", Rancho 4" lift, 325/60 on 20x9 Moto Metal 959, RBP grille and side vents 13.5 @98MPH
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post #4 of 5 Old 12-14-2010, 05:16 PM
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37x13.50s on 16x9 4.5 bs hit the leaf springs. its annoying but I'm pretty much used to it.
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post #5 of 5 Old 12-15-2010, 06:14 AM Thread Starter
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Thanks guys. The wheels I was looking at were actually 4.75" back-spacing; so that should give me a little more room...

How about some pics ?

2000 F350 SCLB
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