Hey guys,

I am thinking about upgrading from my 35's to 37's. The only problem i'm having is, will i have to change anything to make them work, what will I see change about the ride and feel of the jeep.
Its a 2013 JKU
4" Mopar lift
3.73's gears
Automatic

The 35's are running great right now, and I like the way it drives and handles. I have searched the site for 37's and haven't been able to find anything about differences between 35's and 37's. Any input will help.
Also I have seen that many people aren't happy with their BFG KM2's I like the way these KM2's are, but want to make sure im getting the right tires moving to 37's.
Thanks in advance...

 

I have 37's km2's but have 538 's and it rides fine to me now I wouldn't know how it feels with a lower gear but from what I read on here you probably should change gears . I would think it would lag a little.

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3:37 gears are small but idk how that works with the new motor. I have stock 4:10s on my 09 and its way underpowered. I bought 5:13s for 35's and need to install them. I would consider getting new gears and to reinforce your front axel. If I'm not mistaken you have a 30 upfront so that and trim the wheel well

 

I have the Dana 44's not the 30's. So really i dont think id need to get a bigger front axel?

 

37's put more stress on the driveline and axles. So it depends what you are going to do with your rig. If you are driving mostly on the street, then maybe, maybe you won't break stuff. If you are going to wheel it much, you will. 35's are a really nice size--all purpose. If you have to go to 37's then you have to pay to play---it'll catch up with you one way or another, at least in my experience.

 

Your probably going to want to cut your fenders or get flat fenders if you plan on playing around in the dirt.

 

You will be struggling to turn 37's with 3.73 gears. You will want to think about re-gearing, or it will be a dog. Also be prepared for fuel economy to take a big hit as well

 

Yea I am planning on actually using it as a DD and with some off roading but nothing hard core yet! The new smell is still there haha!
As for breaking things, I had a 99 I thrashed pretty good and know all about fixing things everytime I went out! I do plan on buying the new fenders for it so that's not a worry and also new bumper and sliders! Just before I got to many miles on the tires and someone interested in buyin them for what I did, figured if it wasn't to much to switch to 37's might be a good idea! I drive 15 miles to work and that's it! It's mostly a weekend warrior! And haven't found anything major to rock climb!

Thanks for the advice! But still not sure what I'm going to do! I've read on here wish I would have went to 37's and not 35's! With the 4 inch lift they fit no problem I have aftermarket bump stops and plan on trimming the fenders!

 

Oh and mileage! Ha I'm ok with lookin down and seeing 13-15 mpg it's a JEEP!!!

 

I'd consider swapping to lower gears. I'd also check to be sure the rear pinch seam doesn't rub. 37" are on my list.