lift and tires
JK Junkie
Joined: May 2007
Posts: 2,288
Likes: 0
From: Treasure Coast, Florida
I need to offer a counterpoint. I have a 09 unlimited auto - just put on 35" Procomp Xterrains (which i was surprised to see are more like 34.3"). I have a 2.5" lift. I don't drive too quickly, but after adjusting the shift points with the AEV procal, I am still very happy with the 3.73s and have no plans to change them - granted i live in houston and its pretty flat here).
JK Super Freak
Joined: Oct 2008
Posts: 1,944
Likes: 0
From: Long Island, NY
Come-on bubba, you know where I live. There ain't nuthin but flat-ass highway down here. Trust me when I tell you that the auto is geared WAY too high. I had stock 32's and hated it even before I installed my 35's, which by the way turned my 4speed auto to a 3speed auto... And that was with 4.10's
What do you mean you turned it into a 3 speed auto do u shift it from 1-2-D lol
JK Junkie
Joined: May 2007
Posts: 2,288
Likes: 0
From: Treasure Coast, Florida
No, the auto shifted into 4th but would soon be shifting right back into 3rd again on it's own. I just finally ended up having to hit the O/D button every time I got in and drove so it wouldn't be gear searching all the time.
And yes, sometimes I would do my own gear shifting!! 1-2-D
JK Super Freak
Joined: Jan 2009
Posts: 1,004
Likes: 0
From: LSU-Death Valley, Louisiana
Come on man. Sure, your diameter will only be a little larger but ya know it's gonna be a lot wider too! And, with the tires usually comes wheels which are usually also wider. All of this adds a lot of rolling weight and changes things big time over stock!
JK Super Freak
Joined: Oct 2008
Posts: 1,944
Likes: 0
From: Long Island, NY
No, the auto shifted into 4th but would soon be shifting right back into 3rd again on it's own. I just finally ended up having to hit the O/D button every time I got in and drove so it wouldn't be gear searching all the time.And yes, sometimes I would do my own gear shifting!! 1-2-D
JK Enthusiast
Joined: Mar 2009
Posts: 361
Likes: 1
From: Lake Arrowhead, Ca
I have a 09 X Unlimited, auto, 3:73's, 2.5" TF BB and 285/75/16"s... almost 33's... with the ProCal. After I lifted it and put bigger tires I was worried it would be real sluggish, but it's not like I thought it would be. It's just a little slower. I wouldn't go any bigger than the tires I have on right now without regearing. On the flat highway it stays in 4th gear and cruises at about 1650 to 1700 RPM at 65 to 70 mph. On a upgrade it will shift down to 3rd. I live at 6500 feet and drive down the mountain to sea level three days a week. On the way back up the mountain I have the OD off of course and it pretty much stays in 3rd gear all the way up until I hit a real steep part of the road, then it shifts down to 2nd for a bit. Not too bad really. After my 33's wear out I'm really thinking of 35's and 4:88's. But for now I can live with my set up with no complaints.