Front D30 Strength - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-21-2008, 09:20 PM   #1
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
Front D30 Strength

Hello.

Now I have some 35" Cooper STTs on my TJ and only a stock D30 front axle.
Will i damage the axle when i go wheeling the next time (only moderate wheeling in mud or sand)? Should i better stay on the road?

Is it better to use the front locker or not to use it?

I want to install some stronger chromoly Alloy Axles in the future, but at this point I donīt have the money for that.

Btw. for the old 35" BFG ATs it was strong enough...

Thanks in advance for your replies.

nicolas-eric

nicolas-eric is offline   Quote Quick Reply
Old 01-21-2008, 09:40 PM   #2
Jeeper
 
Chad P's Avatar
 
Join Date: Jun 2007
Location: Westminster, Co
Posts: 380
if you had 35's on it before and you didn't break anything why would you now?

__________________
2003 Wrangler TJ
All stock for now!
Chad P is offline   Quote Quick Reply
Old 01-21-2008, 11:21 PM   #3
Jeeper
 
tobycat1's Avatar
 
Join Date: Aug 2007
Location: Sac town
Posts: 978
HAHA d30 with 35's and locker Go for it! It has a 70% chance of survival I say, but if it breaks it just a good opportunity to buy a d45
__________________
myspace.com/bigtanner
tobycat1 is offline   Quote Quick Reply
Old 01-21-2008, 11:43 PM   #4
Jeeper
 
jherrin215's Avatar
 
Join Date: Dec 2006
Location: Glasgow, KY
Posts: 1,002
A dana 30 in the front should be fine I would say. What is a D45? I have never heard of one??
__________________

2003 Light Khaki Sahara
jherrin215 is offline   Quote Quick Reply
Old 01-21-2008, 11:46 PM   #5
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
2x ^.. i think its a typo.. also nico you have a rubi.. doesnt that come with front and rear 44s?
Triple88a is offline   Quote Quick Reply
Old 01-21-2008, 11:51 PM   #6
Jeeper
 
tobycat1's Avatar
 
Join Date: Aug 2007
Location: Sac town
Posts: 978
Ya typo, the d30 was made tough, go ahead and test it
__________________
myspace.com/bigtanner
tobycat1 is offline   Quote Quick Reply
Old 01-22-2008, 12:29 AM   #7
Drives by Braille

WF Supporting Member
 
AzTJ's Avatar
 
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,621
D30 should be fine. But upgraded shafts never hurt.
AzTJ is offline   Quote Quick Reply
Old 01-22-2008, 12:47 AM   #8
Jeeper
 
jherrin215's Avatar
 
Join Date: Dec 2006
Location: Glasgow, KY
Posts: 1,002
Quote:
Originally Posted by Triple88a View Post
2x ^.. i think its a typo.. also nico you have a rubi.. doesnt that come with front and rear 44s?
He doesn't have a rubi trip, that's just it's nickname, that's why he installed lockers too, remember. It's the ruNICOn
__________________

2003 Light Khaki Sahara
jherrin215 is offline   Quote Quick Reply
Old 01-22-2008, 08:59 AM   #9
Jeeper
 
lost's Avatar
 
Join Date: Sep 2006
Location: ɹǝʌo dılɟ Miami,FL
Posts: 2,165
Quote:
Originally Posted by nicolas-eric View Post
Hello.

Now I have some 35" Cooper STTs on my TJ and only a stock D30 front axle.
Will i damage the axle when i go wheeling the next time (only moderate wheeling in mud or sand)? Should i better stay on the road?

Is it better to use the front locker or not to use it?

I want to install some stronger chromoly Alloy Axles in the future, but at this point I donīt have the money for that.

Btw. for the old 35" BFG ATs it was strong enough...

Thanks in advance for your replies.

nicolas-eric
It should be fine.
just check and make sure your axle shaft u-joints are in good condition and replace them if they arent.
__________________
74'cj5: 360v8, d30, d44, 32"BFG a/t's
73'cj5: 258, d30, d44
00'tj:242
lost is offline   Quote Quick Reply
Old 01-22-2008, 10:09 AM   #10
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 9,965
Images: 5
with 35's and the dana 3- you should be fine. However, with a locker in there it might make things like u-joint wear faster etc, with that big of a tire. ARb, or the like, would be best as it would not be on all the time so less wear, stress on shafts, u-joints, hubs etc.
__________________
79.96.85.00.01.97.00.97.93.97.95.94
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ
4Jeepn is offline   Quote Quick Reply
Old 01-22-2008, 12:17 PM   #11
MOz
Jeeper
 
MOz's Avatar
 
Join Date: Apr 2007
Location: Poconos
Posts: 2,484
Run it till you break it and then upgrade accordingly.... (Jeep motto)
__________________


It ain't no fun unless you get some of it on you.
MOz is offline   Quote Quick Reply
Old 01-22-2008, 03:26 PM   #12
Jeeper
 
Jonny15's Avatar
 
Join Date: May 2007
Location: Dover, New Hampshire
Posts: 839
Quote:
Originally Posted by Triple88a View Post
2x ^.. i think its a typo.. also nico you have a rubi.. doesnt that come with front and rear 44s?

Jeep makes the ruBICOn but the ruNICOn is one of a kind.

Lol he doesn't have a rubi, it's a sahara, it even has the sahara decal right on the side...
Jonny15 is offline   Quote Quick Reply
Old 01-22-2008, 03:41 PM   #13
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
yes, itīs a ruNicon and not a ruBicon.
i have a rear D44 but in the front thereīs only a D30.

thanks for your replies. now i hope my front axle will be ok after i go wheeling next saturday.



@chad_p: before u had ATs and i think that with MTs (more traction) thereīs more torque/load that stresses tha axle.




nicolas-eric is offline   Quote Quick Reply
Old 01-22-2008, 11:45 PM   #14
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
I know he changed the decal to Runicon but i allways thought he had an 05 Rubi.. anyways life goes on lol. I wonder whats the biggest tire the front can handle.
Triple88a is offline   Quote Quick Reply
Old 01-23-2008, 12:58 AM   #15
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,356
Images: 2
Quote:
Originally Posted by Triple88a View Post
I wonder whats the biggest tire the front can handle.
35". After that, whether it's a Dana 30 or a Rubicon D44, the ball joints and knuckles start going bad at an accelerated rate. Outside of the pumpkin and axleshafts themselves, a TJ D30 and Rubicon D44 are the same from the axletubes outwards.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 01-23-2008, 02:25 PM   #16
Jack Lives Here!!!

WF Supporting Member
 
1BLKJP's Avatar
 
Join Date: Apr 2005
Location: Phoenix, AZ
Posts: 7,764
Yeah, when you start putting 37" or bigger tires on a D30 Ring and Pinions start exploding in spectacular fashion.
__________________
Thanks,
Jack Hickman

President - Arizona Off-Highway Vehicle Coalition
Vice-President - ASA4WDC
Arizona Rock Rats
1BLKJP is offline   Quote Quick Reply
Old 01-23-2008, 04:29 PM   #17
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
lol yeah i've heard of 37s or 38s falling and rolling ahead of you..
Triple88a is offline   Quote Quick Reply
Old 01-23-2008, 04:46 PM   #18
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
in the future iīll install some alloy axle shafts and stronger u joints. will the axle be strong enough for 37s then?
my new STTs are 3/4" higher than the BFG ATs but they look very small. i want some 37s next time i buy tires.
nicolas-eric is offline   Quote Quick Reply
Old 01-23-2008, 05:04 PM   #19
Jack Lives Here!!!

WF Supporting Member
 
1BLKJP's Avatar
 
Join Date: Apr 2005
Location: Phoenix, AZ
Posts: 7,764
Quote:
Originally Posted by nicolas-eric View Post
in the future iīll install some alloy axle shafts and stronger u joints. will the axle be strong enough for 37s then?
my new STTs are 3/4" higher than the BFG ATs but they look very small. i want some 37s next time i buy tires.
Nicolas, I'll put it this way. Anything can work. Hell I've seen 38's on a D30 and D35c, but the guy never took it off road and it wasn't locked at all so it survived the long haul. Then I've also seen people with 33's hammer down and get bound up which lead to busting D30 shafts. Even the other day I saw an Alloy Chromo 44 front shaft twist so bad it broke clean off.

All I can say is that if you want to start running bigger heavier tires on a stock drivetrain then you have to know that you could break something anytime you go wheelin. That's why I carry spare shafts front and rear and have the ability and the tools to change them in a minimal amount of time. The only other thing I'd worry about with having your high dollar locker in your D30 would be sheering off teeth on the ring gear and some how messing up the locker. But each person and every scenario is different. None of us can give you a concrete yes or no on if your D30 would survive under your wheelin style on 37's.
__________________
Thanks,
Jack Hickman

President - Arizona Off-Highway Vehicle Coalition
Vice-President - ASA4WDC
Arizona Rock Rats
1BLKJP is offline   Quote Quick Reply
Old 01-23-2008, 06:21 PM   #20
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,356
Images: 2
One more time... it's not the axleshafts or u-joints that are solely responsible for the problems running 37" tires on a Dana 30, it's everything else. I'm running hardened 4340 chromolly axleshafts in my D30 and I still don't dare running anything bigger than 35" tires, as much as I would like to with my new high excessively highway RPMs as a result of a new 3-speed automatic transmission.

The Dana 30 is not strong enough for 37" or bigger tires, no matter what you do to the axleshafts and u-joints.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 01-23-2008, 06:38 PM   #21
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
ok thanks.
i think then i should better stay with 35s and install some chromly axle shafts and u joints anyway.

after all the money that i spent for the front ARB locker and the front gears in the D30 an axle swap is no option.
my "runicon" will never have bigger tires than "small" 35s...

nicolas-eric is offline   Quote Quick Reply
Old 01-23-2008, 06:52 PM   #22
Jeeper
 
Jonny15's Avatar
 
Join Date: May 2007
Location: Dover, New Hampshire
Posts: 839
Quote:
Originally Posted by nicolas-eric View Post
my "runicon" will never have bigger tires than "small" 35s...

lol 35's are pretty big for a TJ...i only have 27's on mine right now if that makes you feel better
Jonny15 is offline   Quote Quick Reply
Old 01-23-2008, 07:01 PM   #23
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
i didnīt mean it. was just a joke.

i had small 205/75r15 on my old YJ and 30s on my old TJ. i always wanted some 33s on my jeep. now with the 35s iīm very happy.
nicolas-eric is offline   Quote Quick Reply
Old 01-23-2008, 07:02 PM   #24
Jeeper
 
tobycat1's Avatar
 
Join Date: Aug 2007
Location: Sac town
Posts: 978
Quote:
Originally Posted by Jonny15 View Post
lol 35's are pretty big for a TJ...i only have 27's on mine right now if that makes you feel better
Are 27's stock?
__________________
myspace.com/bigtanner
tobycat1 is offline   Quote Quick Reply
Old 01-23-2008, 07:09 PM   #25
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
215/*75r15 is stock. thats about 27.5x8.5
nicolas-eric is offline   Quote Quick Reply
Old 01-23-2008, 07:24 PM   #26
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
Quote:
Originally Posted by nicolas-eric View Post
215/*75r15 is stock. thats about 27.5x8.5
Actually i'm sorry but its actually 27. 75 x 8.5
Triple88a is offline   Quote Quick Reply
Old 01-23-2008, 07:25 PM   #27
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
Quote:
Originally Posted by Triple88a View Post
Actually i'm sorry but its actually 27. 75 x 8.5
sorry i forgot 1/4". with 27.75" they look much bigger...
nicolas-eric is offline   Quote Quick Reply
Old 01-23-2008, 07:26 PM   #28
Jeeper
 
tobycat1's Avatar
 
Join Date: Aug 2007
Location: Sac town
Posts: 978
I see. I thought 30 was stock since thats what the old lady who had my jeep was running. She used it to buy flowers once a week so I doubted she had bigger tires put on
__________________
myspace.com/bigtanner
tobycat1 is offline   Quote Quick Reply
Old 01-23-2008, 07:27 PM   #29
Jeeper
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 8,286
Send a message via AIM to Triple88a Send a message via MSN to Triple88a Send a message via Yahoo to Triple88a Send a message via Skype™ to Triple88a
Quote:
Originally Posted by nicolas-eric View Post
sorry i forgot 1/4". with 27.75" they look much bigger...
hehe
Triple88a is offline   Quote Quick Reply
Old 01-23-2008, 07:34 PM   #30
Jeeper
 
nicolas-eric's Avatar
 
Join Date: Jan 2007
Location: Hamburg, Germany
Posts: 5,877
Send a message via ICQ to nicolas-eric Send a message via AIM to nicolas-eric Send a message via MSN to nicolas-eric Send a message via Yahoo to nicolas-eric
here in europe all stock TJs came with 215/75r15. only the sahara had 225/75r15.

nicolas-eric 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Front End Sag compshooter TJ Tech Forum 20 08-01-2008 07:10 PM
Front end issues 4point TJ Tech Forum 11 06-02-2008 06:38 PM
Please 'splain the front axle to me. JoeyT YJ General Discussion Forum 6 04-20-2008 09:29 PM
front axle - dislocated? NJJeeper YJ Tech Forum 3 03-14-2008 12:45 AM
New Locker thread MrBash TJ General Discussion Forum 33 02-08-2008 07:38 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 05:39 PM.



JeepŪ, 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