I know that this would not be the most ideal set up but was wondering how many out there are running 37's with 4.10's.
I won't be regearing this year so if I went with the 37's am I going to hate it or is it livable. My last jeep was a 4 banger and I've had many Toyota 4 bangers so I'm kinda used to not much power. Now with the 4 bangers I've had to regear but with the little extra power that the V6 has I was thinking that maybe it might not be so bad for a year or so till the gears get done.
Or should I just do the 35's?

 

I went 35's with 4.10's and really want to re-gear. It's not terrible but cruise control prompts alot of downshifts :( I'd imagine 37's being pretty ugly with 4.10's and forget about cruise imo

 

It does knock a little wind out of the sail but livable. I am running this combo until i get new gears. Not terrible but slower. Fuel econemy around 13 mpg 15 highway . Hope this helps.

 

There was a truck at the dealer being sold with 37's, skyjacker lift and 3.23's, lol. They wanted like 45k for it too

 

hmmmmm, see- I get the bit about reduced power....what I dont get is the bit about reduced MPG going bigger tires and keeping 4:10's would in essence be like having stocker tires and the 3:20's..... alleged better fuel economy (at least at highway speed).

Stupid question but I have to ask: you are/you have adjusted the speedo for the larger tires??????????

 

not really. you have to remember that a 37 inch tire with wheel weighs 80 or so pounds. theres a chart on here showing rpm's, i just cant find it. 4.10's are ideal for a 33 inch tire. with 37's you are looking at 5.13's according to the chart to keep you rpm's at a good spot on the highway. id stick with the 35's. that is the set up im gonna run with till i can afford a regear.

 

I've been thinking of going with 37s, as my 35s are pretty worn out. probably speed would be the least of your problems. (if you wheel) but we could spend the day talking about it. guys seem to think that changing gears is like magic. it all goes back to stock. well it doesn't. my last truck, a 2003 f150 v8 had 37s and 5:13s, and it was way slower than most of my friends trucks. after a little while you forget that you already regeared. (meaning maybe a friend drives it and suggests you to regear, and you tell him you already did) my point is, after big tires , bumpers, racks, winch, and all the extra stuff we put on, it will never be the same. I'm so glad my jeep is not my daily driver. so I think it depends on what you want your jeep for. on a good note if you ever drove a cj , tj ,or any other jeep on 35s and 15s, the jk is way better than that.

 

here's that chart;

http://www.superioraxle.com/feature.html

 

Another factor is you'll be using a lot more gas pedal to maintain speed, hance use more gas.

 

To the OP, while I know people have run 35's and 37's with the 4.10's, I can't imagine it being very enjoyable. I think the 4.10's are just adequate on the JK with the stock tire size. Ultimately it is subjective though, and the amount and kind of driving you do will dictate if it is a reasonable option for you.