2" BB and 31's worth the cost off road? - Page 3 - JeepForum.com
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post #31 of 32 Old 06-15-2013, 08:20 AM
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1997 ZJ 
Join Date: Jun 2012
Posts: 5,047
I ran 31's on my old 4.0 for about a year. Not fast but it wasnt too doggy. Id take traction aid over big tires any day.

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post #32 of 32 Old 06-15-2013, 03:56 PM
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1995 ZJ 
Join Date: Feb 2009
Location: Tooele
Posts: 87
YMMV, I was getting 18 on 235s, with the 4.0, auto, and 3.73s. Not so much the 2" lift, but the larger tires will pull you down. I lost 3 MPG going from 235s to 31s. And gained back 2 slipping back to 30s.

I do like the places the 30s can get me. But I do realize limitations. I'm never going to get into places 33s or bigger will go. Not without a lot of hurt.

Originally Posted by ErikTheRad View Post
So when I mount the new OME 2" lifted springs and 31" tires, I can expect to lose 2-3 mpg? So, from crap mileage to SERIOUS crap mileage? I only get about 12-14 mpg now on 235/75-15's, I can't imagine it getting much worse. Its a 93 5.2 w/ 3.73's.
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