a bit sluggish after 3" lift - JeepForum.com
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post #1 of 4 Old 09-25-2013, 07:03 PM Thread Starter
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2001 XJ Cherokee 
Join Date: Sep 2013
Location: Denver
Posts: 1
a bit sluggish after 3" lift

Hey gang!

I am new to the forums and new to jeeping. Any guidance I can get from ya'll would be most appreciative. I have recently put a 3" lift on my XJ and upgraded to 31" tires. I new she'd get a little sluggish, but I am surprised at how much the new tires have slowed me down. A couple of buddies have suggested I may have to change the gear ratio in the rear diff or might even be able to change some settings in the PCM to get back up to speed. Any suggestions for how I should move forward?


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post #2 of 4 Old 09-25-2013, 10:21 PM
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2000 XJ Cherokee 
Join Date: Oct 2008
Location: Sumware Inn
Posts: 3,000
You have more air resistance and heavier tires that are 3" taller and probably 3.5" wider than stock. It will be a bit heavier feeling, but tolerable on stock gears once you get used to it. 4.10 gears would be a good set up for 31's assuming you'll stay there and you can find those in a 4 cylinder stick from time to time. I'd live with it and did for a couple years.
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post #3 of 4 Old 09-26-2013, 01:25 PM
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1995 XJ Cherokee 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,305
There are no settings you can change that will help. Re-gearing (or going back to stock size tires) is the only way to go.
And if you have 4WD, you'll need to do both axles (Finish filling out your profile, or include pertinent info with every post!)...

I just went to 33x10.50 from 235/75 (28.8x9.25) and on level ground there is little difference.
However, on any incline, even modest ones, it bogs down. And forget about a steep incline. 4000 RPMs in 2nd gear sucks!
Prior to getting the bigger tires, I felt no effects from the lift height...
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post #4 of 4 Old 09-26-2013, 10:28 PM
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1995 XJ Cherokee 
Join Date: Jun 2012
Location: Monrovia
Posts: 749
I was surprised at the difference going from the stock 215's to 30 9.50's. The shift points were the most noticeable when at highway speed going up hill. You probably aren't going slower, your speedo is reading slow.

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Just got a 1989 YJ too!
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