40'S on your JL

[Envy_Jeep]

Yes I got a 3inch lift on it and buying new fenders soon.

What lift did you go with?

Sponsored

 

[Jammer]

I find it funny when some one says they are running 40s on stock axles, then in the next breath they say, I have changed the axles and had them trussed, changed the ball joint yada yada yada.

Lets break this down what they are calling stock

Add Chromoly shafts about $1000. If you do RCV axles $1400 fro the front $1950 for the back

Dynatrac Ball joints, $630

Regear the axle $1000 per Axle on the low end.

Truss the axle parts and labor most likely will be above $1100 for each axle

So on the low end if you do most of the labor yourself, you will be north of $4000 per axle and you call them a stock axle. Now that is funny. If you pay a shop to do the work you will probably be closer to $6000 per axle.

I say if you want 40s, just but the one ton axle. I run 37s and I am already hating the money that I have in my rear axle. I have to make a decision today, throw another $1500 to $2000 at my Dana 44 or buy a one ton axle.

I have a bad locker now. I have upgraded to Yukon axles, because I twisted a rear axle shaft, I re geared it, I have ripped teeth off the pinion gear, by the time I add an ARB locker I will be $5000 into a "STOCK" axle. Also add the Z-locker bypass into the mix. Fuck.

And time is not on my side.

You broke that and did all the damage with the 40s right ? with 37s you had no problems right?

 

[Jammer]

That looks so good love the color and if you have that red dash it really looks good with the blue. Can you park that in your garage or you leave it outside every night?

 

[Spencer]

Has anyone tried 40’s with 4.5 backspacing?

Currently I have the 3.5 Metalcloak lift.

 

[Will.Batt]

Has anyone tried 40’s with 4.5 backspacing?

Currently I have the 3.5 Metalcloak lift.

They will rub. and with the MC 3.5 lift you will need to trim a bit even with 3-1/2 or less of backspacing.

 

[MSparks909]

What inner fenders are you guys running with 40s? I’m specifically concerned about the rear pinch seam trim that’s needed so you can stuff the rear tires. Do the rear inner fenders line up well with the seam trim or do you have to modify them as well?

 

[DOOKEY]

What inner fenders are you guys running with 40s? I’m specifically concerned about the rear pinch seam trim that’s needed so you can stuff the rear tires. Do the rear inner fenders line up well with the seam trim or do you have to modify them as well?

Nemesis. No modifications needed to trim the pinch seam.

 

[GSLSE21B]

Has anyone tried 40’s with 4.5 backspacing?

Currently I have the 3.5 Metalcloak lift.

3.5 game changer with 4.51 BS 40/13.50/17

 

[Jammer]

3.5 game changer with 4.51 BS 40/13.50/17

Looks good anytime you go with forties even with 13.50 the tire looks more narrow because it's taller even on my truck I had that same look I like the way the 40s look. You take like a 35-12.50 or 37 13.50 it looks really wider then a 40 13.50 because it's taller. I wish I could run 40s but I want my Jeep in my garage every night and I don't want to mess with axles

 

[CaJLMetalHead]

DSTRAC are cheaper and you get 70's rather than 60. I'm going DSTRAC HP front, LP rear. And they're the size of 60's.

Hey Joe,

Interesting approach to choose DSTRAC... the kit even comes with 2.5 Ton Aluminum Steering kit! ...

Would you mind elaborating why you went with High Pinion front, Low Pinion rear... also.. I wonder if you can elaborate on the options on the DSTRAC website ... Thanks!

and BTW.. I also run 40s on stock axles (and I mean stock.. the only difference is that I welded Artec trusses to the front ) .. MC 3.5 Gamechanger springs.. Method Beadlocks with 4.5 backspace

Here I am at Cougar Buttes ni Califonia.. there are some tough trails there... I need PSC HydroAssist! LOL

 

[DOOKEY]

Hey Joe,

Interesting approach to choose DSTRAC... the kit even comes with 2.5 Ton Aluminum Steering kit! ...

Would you mind elaborating why you went with High Pinion front, Low Pinion rear... also.. I wonder if you can elaborate on the options on the DSTRAC website ... Thanks!

You want high pinion in the front for a couple of reasons. First is strength over low pinion. High pinion reverse cut gears up front will be stronger over low pinion because of how the pinion teeth push the ring gear. Opposite of that is strength in low pinion gears in how the push the gears in the rear.

High pinion up front gets the drive shaft up away from the ground better. Usually leads to better drive shaft protection and better joint angles.

 

[OnlyOne]

3.5 game changer with 4.51 BS 40/13.50/17

That just looks badass. Nice job.

 

[J0E]

also.. I wonder if you can elaborate on the options on the DSTRAC website ... Thanks!

Options are pretty self explanatory, did you have any specific quesitons?

Not sure if it's true, but I've been told the ring gear/pinion is strongest closest to 5:1

The Ruby 4:1 xfer case and automatic transmission gives me plenty of crawling torque.

 

[nyglt56]

My XR with a spacer lift and 12" travel shocks. 18k miles on 40s no issues. I may go to a 1 ton setup soon. Depends on a few factors.

 

[21JLUR]

Hey guys, new to jeeps, jeeping. I have a 2021 JLUR. It's currently on 40x13.5x17 Mickey Thompson Baja Boss MT mounted to 17x9 -44/3.5" backspace Method 106 beadlocks. MetaCloak 3.5" GameChanger lift. Stock D44 axels, RCV 300M front and rear (FAD deleted), 5:13 gearing, Reid Knuckles, Dynatrac ball joints. 4, 1" MetaCloak bump stops in each corner.
I'm having pretty good amount of rubbing on the rear pinch seam, and bumper. Bumper wraps around and line up with lunch seams.
I'm planning on doing the MetaCloak 4.5 inch lift soon. Will I still need to trim? Or go bigger then 4.5", or get a different wheel setup with different back spacing. Add more bump stops.
Sorry for all the questions. Just looking for some help other then go buy 1 tons.

Yes I am aware I should get 1 ton axels. But, I'm interested in running the stock D44's at least another year. I do plan on trussing them asap.

Sponsored