I am thinking about getting new gears for my rig in a year or two. I looked at the charts and it seems that 4.56 would be the best for both 33s and 35s without revving too high. I do not rock crawl or the like.

Right now, my rig is on 33s with the 6spd and 3.21s. It is liveable, but I want to either move up to heavier 33s or even 35s when I save up enough for a regear, 1" body lift, and the tires.

Some people swear by 4.88s, but based on the charts, it looks like 4.56 would be a "performance" gear for 33s and a perfect gear for 35s. I am not having much problems with my 3.21s. What do you guys think?

 

im basically in the same boat. most likely will go with 4.88s just in case i get the itch for 37s (on 35s now).

 

i had 5.13's with 35's and a 6 speed. it was a little much for 35's IMO.. but its perfect for 37's and liveable on 35's for awhile

If you think your staying at 35's go with the 4.88's. If you think you'll move up to 37's, Install 5.13's..

 

I run 4.56's. I know everybody says 4.88 (or deeper) for a six speed and 35's, but I couldn't be happier with the 4.56's.

Interstate and highway were a significant consideration for me in my gear selection. I turn about 2900 rpm at 75mph and that seems like a sweet spot. On the other end of the spectrum, I can start out easily in 2nd gear, and have plenty of power available.

Thanks to the six speed, at any speed between take off and 80mph I have choices.... six of them If I want more power I just let the R's run up a bit. If I want to run the equivalent of 4.88's or 5.13's, I can. The guys running the deep gears can't let it relax on the interstate.

In my signature you can see that I'm running a Ripp SC. I've had that on for the last 3K miles... I ran 4.56's for many miles prior to it.

One thing you can do (I did) is just take the JK out on the highway and play around with different RPM's for certain speeds, and then take that and compare it to the charts. I found the motor quite happy at 2900 rpm, and if I remember correctly, that was my old 4th gear.

 

i'm about 2900 rpms on 37's with 5.13's. I agree it runs great 2900 rpms.. Thats why I didnt like 5.13's and 35's it was a little high but ran fine

 

I will probably get 4.56, since I worry about highway mileage. 2500 rpm is fine for me with 35s. My 33s run 2300 in 5th gear at highway speeds.

 

X2. I just moved up to 37's, and it seems like a perfect match with the 5.13's. I am not sure of the terrain in you area, but if it is "hilly", I would go with the 4.88's just to be safe, esp with 35's.

 

I have two homes. One in Buffalo/Rochester which is semi-hilly. And another one in Vermont which is hilly as hell.

I will probably stick with 4.56's since I run a 6 speed. I am running 33s on my 3.21s and a double downshift works fine.