35's but what gearing? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-26-2014, 03:25 PM   #1
Jeeper
 
Sheklikak's Avatar
 
Join Date: Apr 2012
Location: Arizona, southwest
Posts: 564
Send a message via Yahoo to Sheklikak
35's but what gearing?

Lots of opinions on 35's and whether to run 4.56 or 4.88 gears.

What are YOU running and what gas mileage are you getting?

Please include 4.0 or 2.5, and auto or stick.

Sheklikak is online now   Quote Quick Reply
Old 03-26-2014, 04:03 PM   #2
Jeeper
 
-DMB-'s Avatar
 
Join Date: Oct 2013
Location: south Louisiana
Posts: 258
2005 LJ with 4.0 auto and 4.56 on 35's. I have a very good amount of get up and go and probably hit around 2200 (RPMs) at around 70mph. I don't track mileage, but recently went around 120 miles (hwy driving) on a half tank.

-DMB- is offline   Quote Quick Reply
Old 03-26-2014, 04:25 PM   #3
Jeeper
 
Stuallum's Avatar
 
Join Date: Feb 2014
Posts: 99
2002 X w 4.0 5 speed stick w 35's. Running 4.56's as well. Has always worked well and has plenty of get up and go! Avg 12-15 mpg.
Stuallum is offline   Quote Quick Reply
Old 03-26-2014, 04:38 PM   #4
Jeeper
 
TJK8's Avatar
 
Join Date: Nov 2013
Location: North Georgia
Posts: 269
1999 2.5 with AX-5 Manual 4.88 and 35" KM2. It is adequate at best…I can run 70 (5th gear @ 2,800 rpm) down the highway but steep grades will slow it down. Once my front and rear Dana 44s go in I'll be running 5.13s with the 2.5/AX-5 and that should put it right in its sweet spot at 70 in 5th gear.

When I had the 4.88 and 33" Wildpeaks it was perfect at 70 even with the AC on.
__________________
TJ V8 truck build in progress. Check out my build thread...

http://www.wranglerforum.com/f118/tj...ld-383474.html
TJK8 is offline   Quote Quick Reply
Old 03-26-2014, 05:06 PM   #5
Jeeper
 
Big Cole's Avatar
 
Join Date: Jan 2012
Location: Lafayette Hill, PA
Posts: 1,743
4.0 with 4 speed auto and 4.88 gears. My rig is terribly under geared due to the steep overdrive. OD stays off until I hit 70. Transmission downshifts at the slightest incline. I couldn't even imagine dealing with 35s and 4.56s
Big Cole is offline   Quote Quick Reply
Old 03-26-2014, 05:09 PM   #6
Jeeper
 
K.wag's Avatar
 
Join Date: Oct 2012
Location: Roseburg, Oregon
Posts: 992
K.wag is offline   Quote Quick Reply
Old 03-26-2014, 05:29 PM   #7
Jeeper
 
Sheklikak's Avatar
 
Join Date: Apr 2012
Location: Arizona, southwest
Posts: 564
Send a message via Yahoo to Sheklikak
Quote:
Originally Posted by K.wag View Post
I agree, only beer instead of popcorn
Sheklikak is online now   Quote Quick Reply
Old 03-26-2014, 05:35 PM   #8
Jeeper
 
K.wag's Avatar
 
Join Date: Oct 2012
Location: Roseburg, Oregon
Posts: 992
K.wag is offline   Quote Quick Reply
Old 03-26-2014, 05:36 PM   #9
Jeeper
 
JeepGuy425's Avatar
 
Join Date: Jan 2012
Location: Florida
Posts: 155
Quote:
Originally Posted by Big Cole View Post
I couldn't even imagine dealing with 35s and 4.56s
I'm interested in the reasoning behind this... Is 4.56 not the recommended gear ratio for 35" tires on a 4.0 auto? I just got my quote for regearing this morning, I currently have stock 3.07 and 4.56 is what was suggested.
__________________
Roads? Where we're goin' we don't need "roads". ~ELB
JeepGuy425 is offline   Quote Quick Reply
Old 03-26-2014, 05:39 PM   #10
Jeeper
 
K.wag's Avatar
 
Join Date: Oct 2012
Location: Roseburg, Oregon
Posts: 992
4.88 is recommended for the 5 speed stick. I dont know about autos... but I believe it will be 4.88 or deeper
K.wag is offline   Quote Quick Reply
Old 03-26-2014, 05:42 PM   #11
Jeeper
 
Big Cole's Avatar
 
Join Date: Jan 2012
Location: Lafayette Hill, PA
Posts: 1,743
4.56 is correct for the manual tranny with the 4.0 and 33s. 5.13s would be better for the 42rle and 35s but they are not possible with the D30 so the next best option is 4.88.

The OD on the 42rle is steeper than the OD on the manual tranny.
Big Cole is offline   Quote Quick Reply
Old 03-26-2014, 05:43 PM   #12
Jeeper
 
K.wag's Avatar
 
Join Date: Oct 2012
Location: Roseburg, Oregon
Posts: 992
If you are thinking 35s and actually wheeling them, you should be looking to ditch the d30 anyways
K.wag is offline   Quote Quick Reply
Old 03-26-2014, 05:58 PM   #13
Jeeper
 
Big Cole's Avatar
 
Join Date: Jan 2012
Location: Lafayette Hill, PA
Posts: 1,743
Quote:
Originally Posted by K.wag View Post
If you are thinking 35s and actually wheeling them, you should be looking to ditch the d30 anyways
Or install a set of chromoly axle shafts.
Big Cole is offline   Quote Quick Reply
Old 03-26-2014, 06:03 PM   #14
Jeeper
 
2004jeeptj's Avatar
 
Join Date: Nov 2013
Posts: 163
When I go with my 35's I am regearing to 4.88. From what I read my 4.0 stick gets close to stock with a 4.56, but a 4.88 is recommended for the added rolling mass of the bigger tires.
2004jeeptj is offline   Quote Quick Reply
Old 03-26-2014, 06:24 PM   #15
Jeeper

WF Supporting Member
 
dale 3's Avatar
 
Join Date: May 2011
Posts: 857
Gas mileage with 35's? That is the least of worries if not done right.Dependability means dollars.Gears,rears and steering.
Add it all up,is it worth it? Your call,your headache when ya go cheap.
__________________
CRUZIN THE BEACH
dale 3 is offline   Quote Quick Reply
Old 03-26-2014, 07:25 PM   #16
Jeeper
 
5spdftw's Avatar
 
Join Date: Sep 2012
Location: SoCal
Posts: 316
Quote:
Originally Posted by K.wag View Post
If you are thinking 35s and actually wheeling them, you should be looking to ditch the d30 anyways
And what would you suggest we put in its place exactly? The Rubi44 would only be better for gearing lower than 4.88 and having a slightly beefier ring gear but still has the same outers. The only other easy swap would be an HP30 which would be good for the ring gear/pinion configuration and better driveshaft angles but you'd still be stuck with the same outers. Anything stronger than those isn't exactly a breeze to sling under the front and would make for garbage clearance on 35s anyway. I think I'll stick to my regeared, locked, and chromo'd LP30 for the foreseeable future.

For the OP, the gearing you'd want depends on which auto you have. If you have the 42rle you would want to gear as low as you can to battle that OD (4.88 with a D30 front). I think 4.56 is right for the 32rh and 35s with 4.88 being a little bit on the higher revving side for freeway driving. Someone please correct me if I'm wrong, I've only ever dealt with manuals and the 4 speed.
__________________
2002 Apex
4.0L 5spd, D30/D44, AlloyUSA, OX, TenFactory, ARB, Atlas, Currie, Savvy, 35" Kevlars
5spdftw is offline   Quote Quick Reply
Old 03-26-2014, 07:51 PM   #17
Jeeper
 
K.wag's Avatar
 
Join Date: Oct 2012
Location: Roseburg, Oregon
Posts: 992
Rubi 44, true 44, HP30, HP44, 60. all are better than the 30. the axle shafts are not the only weak point on the d30
K.wag is offline   Quote Quick Reply
Old 03-26-2014, 08:06 PM   #18
zombie & ninja slayer

WF Supporting Member
 
Redsand's Avatar
 
Join Date: Aug 2011
Location: southern illinois, no where near chicago (allendale)
Posts: 2,276
I'm running 4.10's with a 5 speed. I get 10mpg or so on the highway
__________________

"It puts the lotion on its skin or it gets the hose again"
Redsand is offline   Quote Quick Reply
Old 03-26-2014, 08:15 PM   #19
Jeeper
 
5spdftw's Avatar
 
Join Date: Sep 2012
Location: SoCal
Posts: 316
Quote:
Originally Posted by K.wag View Post
Rubi 44, true 44, HP30, HP44, 60. all are better than the 30. the axle shafts are not the only weak point on the d30
Exactly, the shafts are the first weak point, after that the u-joints, housing, ring rear, etc. Given that a locked LP30 with chromos and good u-joints (5-760x, not RCV or CTM) running 35s will leave the weak point at the u-joint (assuming reasonable levels of intelligence while wheeling!), I see no value of going to a Rubi44 on 35s. A true 44 would be a silly upgrade in favor of an HP44 or a 60 since it all has to be fabbed up anyway, and an HP44 or 60 would be more than a little bit of overkill for 35s. The only thing out of either of our lists that I find remotely appealing for use with 35s is the HP30 but I already have a regeared and locked LP30 courtesy of my jeep's PO that is holding up just fine. I wouldn't tell people to run 37s on it, but I think the LP30 deserves a little bit more credit than it typically gets. There are plenty of folks out in JV with the dreaded LP30/35" tire combo who get by just fine with good shafts and u-joints. Of course, since this is the internet and people are dumb I have to say that maintenance is CRUCIAL with 35s on a LP30/HP30/Rubi44...change those u-joints and inspect hubs/unit bearings annually at the minimum and obviously you shouldn't jump it or race it with teeny factory axle tubes up front.

Edit: This isn't the place for an axle strength discussion, OP will be fine as long as he has a D44/8.8 rear. See above for gearing recommendations, I get about 12mpg as she sits right now.
__________________
2002 Apex
4.0L 5spd, D30/D44, AlloyUSA, OX, TenFactory, ARB, Atlas, Currie, Savvy, 35" Kevlars
5spdftw is offline   Quote Quick Reply
Old 03-26-2014, 08:26 PM   #20
Moderator

WF Supporting Member
::WF Moderator::
 
Sinister6's Avatar
 
Join Date: Jan 2013
Location: Colorado Springs
Posts: 5,502
I'm running 4:88's Manual 6sd. I'm currently running 35's but will be jumping up to 37's. If I were worried about mpg I'd be on the Prius forum.
Also running TEN Factory shafts in the rear and RCV's up front, it's my DD and I wheel at 6000-14,000FT.
__________________
The Wolf is not concerned with the opinion of sheep.

MY BUILD: :
http://www.wranglerforum.com/f322/si...ad-235526.html
Sinister6 is offline   Quote Quick Reply
Old 03-26-2014, 09:26 PM   #21
Jeeper
 
Join Date: Jun 2013
Location: Michigan
Posts: 56
The axles I just picked up have 5.13's, d44 for the front and a ford 8.8 for the rear. I have 33's now but am going to 35's once I get the axle installed. Got both axles for the price of regearing the stock axles.
ollie is offline   Quote Quick Reply
Old 03-26-2014, 11:39 PM   #22
RossRacing7x

WF Supporting Member
 
Kota7x's Avatar
 
Join Date: Jul 2011
Location: 93105, 92677, 92004
Posts: 1,611
2004 LJ 42RLE, 35s, 4.25" Lift, 4.88 Gearing. Lately I have been averaging 15.5-16MPG on my freeway runs. Around town though I can get anywhere from 9-12MPG.
__________________
Sure you can follow... If you can keep up!!!
- 2004 Jeep Wrangler LJ 4.0
Kota7x is offline   Quote Quick Reply
Old 03-26-2014, 11:48 PM   #23
Jeeper
 
Mark 1980's Avatar
 
Join Date: Mar 2014
Posts: 21
Quote:
Originally Posted by Kota7x View Post
2004 LJ 42RLE, 35s, 4.25" Lift, 4.88 Gearing. Lately I have been averaging 15.5-16MPG on my freeway runs. Around town though I can get anywhere from 9-12MPG.
any one know what this axle is d 35 or d 44 I just bought the jeep from some one who didn't know what it has on it

Click image for larger version

Name:	image-590695255.jpg
Views:	129
Size:	103.9 KB
ID:	919090
Mark 1980 is offline   Quote Quick Reply
Old 03-27-2014, 12:10 AM   #24
Motorized Toy Collector

WF Supporting Member
 
TJDave's Avatar
 
Join Date: Nov 2008
Location: Eastern WA State
Posts: 2,997
D44.
Nice avatar.
__________________
~PNW4WDA~
TJDave is offline   Quote Quick Reply
Old 03-27-2014, 12:25 AM   #25
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,131
Images: 2
Quote:
Originally Posted by K.wag View Post
If you are thinking 35s and actually wheeling them, you should be looking to ditch the d30 anyways
The D30 is well proven to hold up fine to 35" tires. Even the Rubicon's front D44 is mostly D30.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 03-27-2014, 12:30 AM   #26
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,131
Images: 2
Quote:
Originally Posted by K.wag View Post
If you are thinking 35s and actually wheeling them, you should be looking to ditch the d30 anyways
The D30 is well proven and well known to hold up fine to 35" tires, even in Johnson Valley which is notoriously tough. Even the Rubicon's front D44 is mostly D30. If you add a locker then installing alloy shafts would be a good idea. I wouldn't run 37's but 35's? No problem.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 03-27-2014, 07:07 PM   #27
Jeeper
 
Mark 1980's Avatar
 
Join Date: Mar 2014
Posts: 21
Quote:
Originally Posted by TJDave View Post
D44. Nice avatar.
thank u
Mark 1980 is offline   Quote Quick Reply
Old 03-27-2014, 07:08 PM   #28
Jeeper
 
Mark 1980's Avatar
 
Join Date: Mar 2014
Posts: 21
Quote:
Originally Posted by Mark 1980 View Post
thank u
thanks for the reply on the d44
Mark 1980 is offline   Quote Quick Reply
Old 03-27-2014, 07:21 PM   #29
Motorized Toy Collector

WF Supporting Member
 
TJDave's Avatar
 
Join Date: Nov 2008
Location: Eastern WA State
Posts: 2,997
Quote:
Originally Posted by TJDave View Post
D44.
Nice avatar.
Quote:
Originally Posted by Mark 1980 View Post
thank u
No problem. Looks like the same exact set up as my Jeep.
Right down to the area I park in at work.

On topic: I'm running 4.88s with my D30 up front. But with my 42rle tranny, I wish I could run 5.38's.
__________________
~PNW4WDA~
TJDave is offline   Quote Quick Reply
Old 03-27-2014, 08:25 PM   #30
Jeeper
 
Mark 1980's Avatar
 
Join Date: Mar 2014
Posts: 21
Quote:
Originally Posted by TJDave View Post
No problem. Looks like the same exact set up as my Jeep. Right down to the area I park in at work. On topic: I'm running 4.88s with my D30 up front. But with my 42rle tranny, I wish I could run 5.38's.
im running 4:10s with my d30 in the front

Mark 1980 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 08:56 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC