I too just regeared to 5:13's with the exact same tires as the OP

I was worried i'd hate it and wish I played it safe and went with 4:88, but it threw me at first when i started up my Jeep and drove it on pavement, other than being a good bit taller than when I had the 33's, it felt an awful lot like when I started out with my lousy 3:21's and factory 255's

It was great to drive then, it only started sucking when I put the 285's on and then added the heavy bumpers and then the winch...

It was fun cruising around in it tonight after I picked it up

I didn't have the time or energy to take it out on the highway, was a long day, spent almost 2 hours in an MRI

Can't wait to take it for a longer drive tomorrow!

Only downside now is that the rear view mirror isn't of much use between the Ace rear bumper/Tire carrier (which carries the tire/wheel higher to fit larger wheels) and the new 37's there is only a sliver on each side of the rear view that is viewable, and that is with it flipped upside down!

matthew

 

I have a 12 jku auto w 4:10s and 35, bumpers winch slides etc. No complaints for a daily driver and some trail rides. Holds overdrive nicely up hill. If your worried get 4:56s. But it's really not necessary.

 

I have a 2013 2 Door w/ 37" M/T-R's and Im running 4.56. I think 4.56 or 4.88 is fine. I live just off the same roads Marcus is talking about and I have driven 85 and I can tell you its not enough gear if you plan on doing that, but I think its more of a wind drag problem. I feel 4.88 would have the same problem at 85+ in these windy and hilly Texas roadways. I plan on adding Ripp S/C then deciding if I want to stick with 4.56 or move up to 4.88 when I order the PR axles.

 

Bottom line if you like to run at 80-85, you may need to get another car that will or ^^^ put a supercharger on it. Once you go with bigger tires I don't think there isn't a gear set that will achieve this comfortably, you can do it though. Its now a HP issue, not gears. We regear for torque.