[grayghost]

Looking at a 13 2dr, JK with a auto trans. 4:10s are hard to find, is it worth it to go for 3:73s, I don't plan on larger tires, but BB lift of 1 3/4 inch?

 

[ColoradoRed]

I have a '10 and run 35s with 3.73s I do a ton of highway driving so it's not unbearable. I heard the new 3.6 is not bad at all, much better than past years and more torque and power. If you can find one with 4.10s its a great option whether you plan on bigger tires or not, if you can't then 3.73s are not so bad. The JK is a gutless pig regardless so "tolerable" is all a matter of perspective.

 

[TOK]

Is 4.10 even available outside the Rubicon? When I first started shopping and going through the build scenarios, the Sport options are 3.21 and 3.73.

 

[BadOleRoss]

I have a 2013 JKU with 35s and am running 3.73 and have plenty of power. You should be fine!

 

[jkwirfel]

I have a 2013 JKU with 35s and am running 3.73 and have plenty of power. You should be fine!

go 3.73 tow package. won't regret it.

 

[diver_matt]

Looking at a 13 2dr, JK with a auto trans. 4:10s are hard to find, is it worth it to go for 3:73s, I don't plan on larger tires, but BB lift of 1 3/4 inch?

I say do it, 3.73 is fine stock. You can always re-gear it later. If you lift it (even a BB) you'll eventually want larger tires. Stock tires are too small/skinny for even a small lift, IMO.

 

[aldaman]

If you can get 4.10s then go for it. The 4.10s will come in handy if you tow or if you run 33s or 35s loaded with aftermarket bumpers, winch & other gear. If you get it now it will be cheaper than regearing in the future...

 

[pearl-drum-man]

Is 4.10 even available outside the Rubicon? When I first started shopping and going through the build scenarios, the Sport options are 3.21 and 3.73.

Except for 2007, 4:10's are Rubicon only. Used to be 4:10's were the only ratio for the Rubicon, but with the Pentastar they also use 3:73 in the Rubi with 4:10 as an option.

 

[lank]

4.10s with the 3.6L and 32's actually feels like it's geared just a little too low on the highway. I get worse mileage on the highway than I get on backroads because the engine RPM is a bit high at highway cruising speed.

I start it in second gear all the time on the road.

I'm happy with it because it should be perfect when I move up to 35s.