Thoughts on 4.56 gears for me
I have a 2006 TJ with the 4.0, 4 speed auto transmission, and 3.73 gears. Iíve already swapped in a Dana 44 into the back. I just added 31 in tires and itís a little doggie for my taste. I also turn ofF the overdrive button when I drive it. Getting ready to take it in to get it to regeared and do some lockers . I pull this jeep behind my rv and intend to use it for a run around vehicle as well as running trails. Donít see it doing a lot of highway miles on it. Thinking about going with 4:56 gears rather than 4:10ís.
With the 4-speed automatic, lower ratios are generally always the way to go. What is the largest size tire you think you may ever end up with? If you think you may ever see 33" tires I'd go right to 4.88 or (better) 5.13. Otherwise 4.56 is what I'd do if you're comfortable 31" is the largest your TJ will ever see.
When you have a choice, buy American made.
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