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View Full Version : Backspacking on Aftermarket Wheels

HUMMERDOGG
10-17-2003, 02:34 AM
OK, hopefully the wife doesn't see this question. If I want to install a 6"-9" lift and run 39x14.50x17 or 44x18.5x17 tires on a 17x12 rim, how much backspacing is required? Is there any benefit between having a wheel with 4" of backspacing versus a wheel with 5" of backspacing?

*NO LONGER A member of the "No Hummer Krew"*
HUMMERDOGG
10-17-2003, 02:34 AM
OK, hopefully the wife doesn't see this question. If I want to install a 6"-9" lift and run 39x14.50x17 or 44x18.5x17 tires on a 17x12 rim, how much backspacing is required? Is there any benefit between having a wheel with 4" of backspacing versus a wheel with 5" of backspacing?

*NO LONGER A member of the "No Hummer Krew"*
DURAMAX TIM
10-17-2003, 06:41 AM
I guess u like the new car?
I would stay w/ less backspace or u will have interference w/ the sway bar and maybe other things.
I would try them out w/o tire and see how much clearance u have them subtract the rim from the tire section width and add 1/2 of this measurement to the rim width to see if it will interfer.
Like 18.5 tire section width - 12" rim = 6.5/2 = 3.25" of tire will hang out past rim.