I recently purchased a car to use as a daily driver as I am traveling 150mi a day. Now that my jeep is no longer my DD I want 37's. What am I missing of my list.

Current set up- 12 jkur auto, 2.5 teraflex coil lift, front adj lower control arms and from adj trackbar, trimmed fenders, 35x1250 km2's.

What do I need to go to 37's?
Front drive shaft
4" springs
Shocks for 4" lift
Longer brake lines
Longer bump stop extensions
What else?

 

Well u can get a 1" body lift and be able to keep Ur tf2.5 lift. My setup is the teraflex 2.5 with a 1.25 rough country body lift on 37's. Trimmed fenders, pinch seams and rubi rock sliders. The reason why I got the bigger body lift from RC is because its only $100 on eBay compared to the daytar 1" for $195

 

And then I would recommend getting sleeves and gussets for Ur front axle. If u do a lot of hardcore rock crawling, u also might want to get chromoly axle shafts too

 

You can run 37's a 2.5" lift and flat/trimmed flares if you bumpstop correctly. Just wheeled all weekend with a friend that runs the RK 2.5 lift and 37" MTR's. It was a nice low COG and wheeled great. It did drag the belly a little.

If you do 3.5 to 4" coil spring spring lift then the items you mentioned will be needed. The post above regarding the front axle work in on target. C gussets, a truss or inner sleeves and chromo axle shafts front and rear...and ball joints(the stock ones won't hold up). 37's will twist the axle shafts and bend flanges if you wheel it.

I'll post a pic if I can find it.

edit:
here is pic of 37's on the RK 2.5 lift


Here is mine on an RK 3.5

 

Nice, thanks for the input.

 

I agree 100% although I went with 1.5" aluminum coil spacers instead of the body lift. I have the same TF lift and wanted to keep the TF springs as the shorter coils are more flexible than the 4" stiffer coils and will allow easier flex once you go to longer shocks. Plus, you'll keep a lower center of gravity which is what I wanted to do instead of being 10 feet tall just to run 37's. I also added adjustable front lower arms, and adjustable track bar. IMO these are a must to correct caster and not drive like an idiot when your jeeps darts all over the road. I would also recommend rear lower adjustable arms, which are next on my list as I need to push the axle back just a bit, but am going to have to trim or switch rear bumper as I'm rubbing at full flex.

I had trimmed my pinch seams and rock rails before, but had to go back and trim a good bit more to have enough clearance. I also added adjustable aluminum bumpstops made by a company called Rokmen here in denver. They come as a package and I actually had to add another 1/2" while in the trail to keep the rear from rubbing a little bit and it only took about 5 minutes total to do the rear on both sides.

IMO, you don't really HAVE TO change the front drive shaft until you start to have problems. A guy I wheel with has been running the RK 3.5" max travel on his jku with no problems on front DS and he gets some crazy flex.

 

Here is a current pic of my jeep. If I decide to go coil spacers will I still need new shocks and longer brake lines?

 

Yes. Not immediately, but you will if you want more flex. I'm still running the TF shocks for the 2.5" lift and the brake line extension brackets. Once you go to a longer shock it will allow more axle droop and then you will need longer brake lines. The never ending list haha

until you put on a longer shock you'll be fine as the shorter shocks will be the limiting factor on travel

check out rokmen.com they make the aluminum coil spacers(and bumpstops i used) and they're cheap and you can get them in 1/2" increments up to 2.5" and they won't compress over time like the TF polyurethane ones I was running on the front before, They looked crazy warped when I took them out

 

I want it to be functional with 37's not just be able to squeeze them under there. So I will want to do shocks immediately if I go that route.

 

I wheeled this past weekend and it was VERY functional, just not as much flex as it could get with longer shocks. I was on a budget and will be ordering my shocks and brake lines on the 15th when I get paid again

Other than that, I would get at least new lower arms front and rear. I'll ultimately be replacing all 8. Man i wish money did grow on trees