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3.75 or 4" backspacing


 
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scorpio_vette
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Joined: 02 Nov 2005
Location: milwaukee WI

PostPosted: Sun Dec 25, 2005 1:28 pm    Post subject: 3.75 or 4" backspacing Reply with quote

97TJ 4.0L, AX15 5speed , 231 t-case, Hp Dana30 front (out of 89 XJ), Dana44 rear w/ 4.56 gears, 4" Rough Country lift, Advanced Adapters Slip yoke eliminator and driveshaft, 6" bushwacker pocket style fender flares.

The 31" tires we were running up until now were on 15X8 with 3.75 BS.

I will be running either 33X12.5X15 Kumho KL71 (just released this year haven't even found them for sale anywhere) or Cooper discoverer STT (also just recently released).

we would like to get 15X10 wheels.

i don't know if i should get 3.75 or 4" backspacing. the wheels my wife wants only come in 15X10 w/4" BS. I think she should stay with the 3.75 BS since i'm afraid she'll rub with the 4".

i tried to provided as much info as possible above so you know what i'm dealing with.

thanks,
Alex
________
Task Force


Last edited by scorpio_vette on Wed Feb 02, 2011 5:00 pm; edited 1 time in total
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ehirner
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Joined: 01 Jan 2004
Location: Eastern PA

PostPosted: Sun Dec 25, 2005 1:34 pm    Post subject: Reply with quote

My recommendation would be to run 8" wide wheels to retain the bead better when aired down. However, sticking to the main question regarding backspacing for the 15x10s, either will work fine. 12.5" wide tires can be run with 4.5" backspacing so either 4" or 3.75" will work.
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