Hey guys, hate to ask another how much lift question, but I keep finding conflicting answers on this one.

I have waiting, a 2.5" Teraflex coil kit, 3/4" daystar spacers, AEV drop brackets & RE adjustable trackbar. This is when I was sure I wanted 35s. After some thought, I think I want to make the jump to 37s. I have read all the work I'd need to invest in my axles.

It seems pretty black & white, if you have flat flares, or trim your stock flares flat, you can pull it off with 2.5" and a bit of trimming if any.

I like the stock body look however, and would like to keep it looking stock. Don't mind cutting my rubi rails, and as much pinch seam as I can.

But will 3.25" be enough to clear 37s? I have been considering adding a 1" bodylift. Problem there is my front and rear bumpers wrap around and are flush with my flares. Don't want to have a 1" gap there.

I wheel about every other weekend, but they are not hard trails. Mainly scenic trails, so I'm not too worried about the need to stuff the hell out of my tires, but who knows what I will come across someday. Will just adding longer bumpstops be enough? With 37s, I might not even need a lot of travel. My TF kit came with 8.5" shocks I believe.

I just regeared to 5:38 and am a bit paranoid about going higher than 3.5" lift and having to mess with caster, and/or driveshafts. A friend of mine with a 4" TF lift just grenaded his Tcase.. Research suggests it was his lift height/caster/5:13s.

Also, I have an ARB front bumper/cable winch, and Mopar rear bumper. Will I even net 3.25"?

 

I'm not sure off hand if Teraflex makes their lifts to sit at their advertised height on a stock jeep or a jeep fully loaded down with steel or not.

If you did get 3.25" of lift though I don't doubt you couldn't run 37's. I've seen people run 37's with a 2.5" lift and flat fenders alone.

 

It comes down to how much bumpstops you are willing to run. If you don't want to trim flares you'll need probably need 4.5" bumpstops in back and 3.5" in front.

When you bumpstop more than you lift you lose articulation. You could always try it and change flare later then reduce your bumpstopps if you decide you want more travel.

 

4" front/3" rear (3.5" total) is enough to fit a 37. Trim the flares if you havnt done so.

What was your friend trying to run for caster angle at 4" of lift ? Sometimes we have to favor pinion angle at that height. Even more so running deeper gearing. 2-3* is not uncommon.


2007 Rubicon /2 door/6 speed

 

You'd be better to run smaller tires. Lift height doesn't matter, other than having enough to clear tires driving down the street. As mentioned, you'll have to run a lot of bump stop. You'll have less travel than a stock Jeep. Stick with 35s if you don't want flat fenders. You'll perform better offroad.

 

X2 with the 35's. They are more than capable.

 

37"-32"=5"
5"/2=2.5"

You only need 2.5" of lift to clear 37's as they are only 2.5" taller then the the factory 32" tires.
The real issue is the clearance needed to turn the front wheels without rubbing on the frame or control arms. Shoot for a wheel back spaciing of 3.5" for a 37"x12.5" wide tire.
Shock length and bump stops will also have an effect on what kind of clearance you need due to axle shift and rotation at different points in the suspension travel.

 

2.5" lift, 37s, and wheels with 4.5" backspacing.

 

We're not even sure. He bought his JKU a year ago already built. It has a lot of nice parts on there, and drove well, so we assumed there were no underlying issues.

Then a month ago, he says he noticed a weird noise when coasting. Could not really find out what it was, then kaboom going about 60 mph. I don't want anything to do with that. The roc-trac cases are expensive, let alone hard to find. I've had XJs for years, and never heard of this before, so now that I have 5:38s, it has me worried to go over a certain height lift. At least I know what to look for I guess.

 

Yes, this is most absolutely the most practical and logical choice. For the kind of wheeling I do now, I won't benefit from that extra inch. I love the way the 4drs look on 37s though.