35” tires too heavy for tailgate, regearing really needed? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK 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 11-13-2010, 06:53 PM   #1
Jeeper
 
s1234's Avatar
 
Join Date: Oct 2010
Location: Raleigh NC
Posts: 29
35” tires too heavy for tailgate, regearing really needed?

I’m thinking of going to 35’s from my stock 32” tires. What are you doing to carry your spare tire (did you buy an aftermarket spare carrier – everyone says the 35” tire is too heavy to mount on the tailgate and that you will have tailgate problems later)?

Also I just drove a stock JK Sport with 3.73 gearing and 35's at a local dealership that had no regearing. Everything seemed fine on both the highway and slower traffic. Why is everyone saying you have to regear?

Thanks!

s1234 is offline   Quote Quick Reply
Old 11-13-2010, 06:55 PM   #2
Jeeper
 
s1234's Avatar
 
Join Date: Oct 2010
Location: Raleigh NC
Posts: 29
FYI - I spoke to a few folks on the phone about this from the Forum (many thanks), just looking for a few more opinions from people who have this situation.

s1234 is offline   Quote Quick Reply
Old 11-13-2010, 06:58 PM   #3
Junior Member
 
Join Date: Aug 2010
Posts: 889
Depends on how you drive. I test drove a stock JKU then a stock geared JKU with 35's. Going uphill was horrid on the JKU with 35's. All comments point to re-gear once you go to 35's.
Boosta is offline   Quote Quick Reply
Old 11-13-2010, 07:02 PM   #4
Jeeper
 
orangecrush4u's Avatar
 
Join Date: Nov 2010
Posts: 72
You need a swing arm tire carrier....
orangecrush4u is offline   Quote Quick Reply
Old 11-13-2010, 08:37 PM   #5
Jeeper
 
Jetmech1's Avatar
 
Join Date: Aug 2010
Location: Indianapolis
Posts: 29
Quote:
Originally Posted by s1234 View Post
I’m thinking of going to 35’s from my stock 32” tires. What are you doing to carry your spare tire (did you buy an aftermarket spare carrier – everyone says the 35” tire is too heavy to mount on the tailgate and that you will have tailgate problems later)?

Also I just drove a stock JK Sport with 3.73 gearing and 35's at a local dealership that had no regearing. Everything seemed fine on both the highway and slower traffic. Why is everyone saying you have to regear?

Thanks!
My tailgate still looks fine. No problems. I can think of better ways to spend 800-1500 bucks for a rear tire carrier bumper. If you're ok with the power of your Jk, no need to re-gear. It's not a dragster. My 07 has stock gearing (4.10) and has plenty of power.
Jetmech1 is offline   Quote Quick Reply
Old 11-13-2010, 11:40 PM   #6
Jeeper
 
Join Date: Aug 2010
Posts: 84
Images: 1
If you want to go with 35"s, you should really consider regearing for the power issue. The real concern is the axle/differential. The way that the Dana 35 is set up, the additional forces placed on it by the larger tires can bust the axle splines, especially when rock hopping. You may want to consider going to a Dana 44 to prevent this.
Heavy D is offline   Quote Quick Reply
Old 11-13-2010, 11:45 PM   #7
Moderator

WF Supporting Member
::WF Moderator::
 
schnutzy's Avatar
 
Join Date: Sep 2009
Location: ring side seats to the the country's largest circus
Posts: 28,181
Send a message via AIM to schnutzy
Quote:
Originally Posted by Heavy D View Post
If you want to go with 35"s, you should really consider regearing for the power issue. The real concern is the axle/differential. The way that the Dana 35 is set up, the additional forces placed on it by the larger tires can bust the axle splines, especially when rock hopping. You may want to consider going to a Dana 44 to prevent this.
while this is true with a TJ or YJ, it is not with the JK. mainly because the JK does not come with a D35. ALL JKs come with a D44 rear.
__________________
clinging on to sanity, one motorcycle at a time.
schnutzy is offline   Quote Quick Reply
Old 11-13-2010, 11:49 PM   #8
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,463
Quote:
Originally Posted by schnutzy View Post
while this is true with a TJ or YJ, it is not with the JK. mainly because the JK does not come with a D35. ALL JKs come with a D44 rear.
beat me too it.
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 11-14-2010, 12:06 AM   #9
Jeeper
 
Ageless Stranger's Avatar
 
Join Date: Apr 2010
Posts: 26,792
I thought a few of the '07 models slipped out with D35s in them??? I know all new production models have the D44.
Ageless Stranger is offline   Quote Quick Reply
Old 11-14-2010, 12:09 AM   #10
Nerf gun assassin

WF Supporting Member
::WF Administrator::
 
distortedtj's Avatar
 
Join Date: May 2005
Location: yep right there.
Posts: 21,267
Send a message via Yahoo to distortedtj
Quote:
Originally Posted by Ageless Stranger View Post
I thought a few of the '07 models slipped out with D35s in them??? I know all new production models have the D44.
Nope....the D35 is too narrow for the JK.

The front and rear Dana's in the JK's are referred to ask "next generation" Dana 30 and D44's. They are completely different axle and wider.
distortedtj is offline   Quote Quick Reply
Old 11-14-2010, 03:17 AM   #11
Jeeper

WF Supporting Member
 
jk'n's Avatar
 
Join Date: Jan 2009
Location: First Quadrant in the Land of the Free
Posts: 4,761
For rock crawling you might consider lower gearing. I have the 4.1s and with stock tires it crawls really well...translate: slow. With 35s I would have to regear for the same effect. Not rock crawling? No need for the regear. Power at the low end will be lacking though with 35s. You will notice it a bit on the highway. Not towing with it? Then that may not matter so much. Evin if towing with it, you may just have to shift down a gear to get back into the power band.
__________________

Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!
jk'n is offline   Quote Quick Reply
Old 11-14-2010, 06:07 AM   #12
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,142
Quote:
Originally Posted by Ageless Stranger View Post
I thought a few of the '07 models slipped out with D35s in them??? I know all new production models have the D44.
There was rumor of that, but no one has been able to come up with one.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 11-14-2010, 09:04 AM   #13
Jeeper
 
Join Date: Aug 2010
Posts: 84
Images: 1
Quote:
Originally Posted by schnutzy View Post
while this is true with a TJ or YJ, it is not with the JK. mainly because the JK does not come with a D35. ALL JKs come with a D44 rear.
I didn't know that. Learn something new every day. I don't actually own a jeep YET. I have been shopping for one and was debating between a TJ and a JK. I have definitely been leaning towards the JK but I think this may have pushed it over the line for me.
Heavy D is offline   Quote Quick Reply
Old 11-14-2010, 09:59 AM   #14
Jeeper
 
Join Date: Nov 2010
Location: Howell ,Mich
Posts: 99
I have a 2010 sport,have 35's,3.73 gear [no problems],rear tire relocation [extension] and tail gate reenforcement kit from Quadratec,cost me 80 bucks total.The spare and gate doesnt even budge. And I know,it all depends on your use of the vehicle.mine is mostly street driven,maybe 10% trail. Thanks
Dean Gaucher is offline   Quote Quick Reply
Old 11-14-2010, 01:46 PM   #15
Jeeper
 
Join Date: Sep 2009
Location: Gurnee Illinois
Posts: 46
Quote:
Originally Posted by Dean Gaucher View Post
I have a 2010 sport,have 35's,3.73 gear [no problems],rear tire relocation [extension] and tail gate reenforcement kit from Quadratec,cost me 80 bucks total.The spare and gate doesnt even budge. And I know,it all depends on your use of the vehicle.mine is mostly street driven,maybe 10% trail. Thanks
How long have you been running this set up??
Lyman21 is offline   Quote Quick Reply
Old 11-14-2010, 03:01 PM   #16
Jeeper
 
Stoneaxe's Avatar
 
Join Date: May 2009
Location: Mid Michigan
Posts: 76
Quote:
Originally Posted by s1234 View Post
FYI - I spoke to a few folks on the phone about this from the Forum (many thanks), just looking for a few more opinions from people who have this situation.
You will have very poor torque with 35's and stock gearing. Merge, passing, uphill driving will all be a thing of the past. You'll be shocked when you eventually do get regeared and you'll kick yourself for not doing it sooner. You'll be much happier with 5:13's at least with an auto trans.

You won't need to worry about "stripping" the splines off the gearing, the v6 engines don't produce enough horsepower to make that even a remote concern.

I have the extended stops on the stock tire carrier for my tire. Eventually I'll get a tire carrier bumper. But for now, I had to choose between having a matching spare or not. I chose the spare.
__________________
'09 Wrangler X Unlimited

3" BDS Lift | AEV Steering Kit with BDS Dampener | 17x8 Black Rock Viper 900 Wheels (matte black of course) | 315/70r17 Goodyear Wrangler Duratrac | Superior Gear 5:13's | Detroit Truetrac | Superchips! | Gen Right Hood Vents

Semper Fidelis
Stoneaxe is offline   Quote Quick Reply
Old 11-14-2010, 06:13 PM   #17
Jeeper
 
Join Date: Nov 2010
Location: Howell ,Mich
Posts: 99
Ive had the jeep for about a month...i know its not the preferred set-up,but its what i have at the moment...[not enough cash for new gearing lol]....and wont 5:13s kill me on the freeway? im new to this,so bear with me...thanks
Dean Gaucher is offline   Quote Quick Reply
Old 11-14-2010, 07:59 PM   #18
Member
 
Join Date: Mar 2009
Location: Upstate/Eastern NY
Posts: 1,960
Send a message via AIM to thaduke2003
Quote:
Originally Posted by Jetmech1 View Post
My tailgate still looks fine. No problems. I can think of better ways to spend 800-1500 bucks for a rear tire carrier bumper. If you're ok with the power of your Jk, no need to re-gear. It's not a dragster. My 07 has stock gearing (4.10) and has plenty of power.
As for this, I have to agree to disagree. The stock tailgate WILL fail at some point, especially if you wheel, or live in an area with bumpy roads. According to my Mopar rep, they're designed to take MAX 75 lbs. Most 35" tires weigh 60 lbs. on their own. At some point, you'll hit a bump, and something will fail. Is it fine for now? Maybe. But putting too much force/weight on anything is never a good idea. And you may not know it's failed until you hit a bump on the highway, and your spare imbeds itself in somebody's windshield. NOT something I'd EVER say is OK.

As for gearing, you have a Rubicon. The 4.10 gears are WORLDS apart from the X/Sahara 3.21's or 3.73's. While the numbers seem to be minorly different, in terms of physics, the numbers are huge, especially in the lower gears. As for being under-geared, you're putting a huge extra strain on your engine, transmission, clutch (if manual), and the rest of your driveline. There's a reason you choke down fuel when under-geared. Short-term, it only hurts your wallet via fuel bills. Long-term, plan on rebuilding the driveline MUCH sooner. That'll hurt a WHOLE lot more than re-gearing- Mark W.
thaduke2003 is offline   Quote Quick Reply
Old 11-16-2010, 05:44 AM   #19
Newb
 
Join Date: Nov 2010
Posts: 9
Hi everyone, new member and I already can't stop reading all of the great Q & A's. I have a 2010 JKU Sahara and I have put 35's on it. No regearing (yet?). What cost is associated with regearing to 5:13's? What RPM at highway speeds if I do?

My JKU has the Next Gen Dana 44 rear and Dana 30 front axle. For the 90% road and 10% off road (no rock crawling) am I going to see drivetrain issues in the future. Thanks everyone - GREAT Forum!!!!!
TUSRoper is offline   Quote Quick Reply
Old 11-16-2010, 05:52 AM   #20
Jeeper
 
Hilldweller's Avatar
 
Join Date: Apr 2008
Posts: 4,040
D30 front axle with 35s. Not a bad idea to sleeve and gusset the 30 and even a 44 front.




The early '07s did have D35 rears; I've only seen one though.
__________________
Gone camping,
Bill

Hilldweller is online now   Quote Quick Reply
Old 11-16-2010, 06:26 AM   #21
Jeeper
 
Join Date: Sep 2010
Posts: 143
The gal who lives next door (my daughter) just bought a Shara Unlimited. It was immediately lifted and 35s installed. Auto and 3.73 gears. It doesn't like hills or a stiff headwind at all. They are trying to decide between a 4.10 or 4.88 regear since the gas mileage also dropped like a rock.

The tailgate will fail hauling a 35" tire around. How quickly depends on how rough the roads you drive are. I bought her stock wheels and tires and the tailgate is loaded with the 32" on it.
arrowhead is offline   Quote Quick Reply
Old 11-16-2010, 07:19 AM   #22
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,142
Quote:
Originally Posted by thaduke2003 View Post
As for this, I have to agree to disagree. The stock tailgate WILL fail at some point, especially if you wheel, or live in an area with bumpy roads. According to my Mopar rep, they're designed to take MAX 75 lbs. Most 35" tires weigh 60 lbs. on their own.

According to my owner's manual:

NOTE:
If you have added aftermarket accessories to the
spare tire mounted carrier, it cannot exceed a gross
weight of 50 lbs (23 kg) including the weight of the spare

tire.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 11-16-2010, 09:37 AM   #23
Member
 
Join Date: Mar 2009
Location: Upstate/Eastern NY
Posts: 1,960
Send a message via AIM to thaduke2003
^ Exactly. In engineering, there's always a 25-50% extra over-engineering standard built into any contraption/design.
It's amazing what you can learn simply by reading the owner's manual Mark W.
thaduke2003 is offline   Quote Quick Reply
Old 11-16-2010, 09:38 AM   #24
Member
 
Join Date: Mar 2009
Location: Upstate/Eastern NY
Posts: 1,960
Send a message via AIM to thaduke2003
Quote:
Originally Posted by Hilldweller View Post
D30 front axle with 35s. Not a bad idea to sleeve and gusset the 30 and even a 44 front.




The early '07s did have D35 rears; I've only seen one though.
I can see your shaft! Mark W.
thaduke2003 is offline   Quote Quick Reply
Old 11-16-2010, 01:02 PM   #25
Jeeper

WF Supporting Member
 
jk'n's Avatar
 
Join Date: Jan 2009
Location: First Quadrant in the Land of the Free
Posts: 4,761
__________________

Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!
jk'n is offline   Quote Quick Reply
Old 11-16-2010, 03:00 PM   #26
Jeeper
 
Jetmech1's Avatar
 
Join Date: Aug 2010
Location: Indianapolis
Posts: 29
Quote:
Originally Posted by thaduke2003 View Post
As for this, I have to agree to disagree. The stock tailgate WILL fail at some point, especially if you wheel, or live in an area with bumpy roads. According to my Mopar rep, they're designed to take MAX 75 lbs. Most 35" tires weigh 60 lbs. on their own. At some point, you'll hit a bump, and something will fail. Is it fine for now? Maybe. But putting too much force/weight on anything is never a good idea. And you may not know it's failed until you hit a bump on the highway, and your spare imbeds itself in somebody's windshield. NOT something I'd EVER say is OK.

As for gearing, you have a Rubicon. The 4.10 gears are WORLDS apart from the X/Sahara 3.21's or 3.73's. While the numbers seem to be minorly different, in terms of physics, the numbers are huge, especially in the lower gears. As for being under-geared, you're putting a huge extra strain on your engine, transmission, clutch (if manual), and the rest of your driveline. There's a reason you choke down fuel when under-geared. Short-term, it only hurts your wallet via fuel bills. Long-term, plan on rebuilding the driveline MUCH sooner. That'll hurt a WHOLE lot more than re-gearing- Mark W.
I have a 2007 Sahara Unlimited (not a Rubicon). It has the 4.10 ratio Trac-Lok rear end that was ordered as an option ($295). I just recommend keeping a watch on the rear spare mount, and if it makes you feel better, make a tether and put on the mount and secure it to the tailgate through an existing hole. I also agree it all depends on the terrain you're driving on as for the need for a rear tire carrier.
Jetmech1 is offline   Quote Quick Reply
Old 11-16-2010, 07:13 PM   #27
Member
 
Join Date: Mar 2009
Location: Upstate/Eastern NY
Posts: 1,960
Send a message via AIM to thaduke2003
^ Physics is physics, regardless of terrain. Even taking into account over-engineering, at some point, you must understand that going 50% over what something is designed to take is a BAD idea, regardless of clever ideas and such. Metal shears, regardless of terrain. Yes, bouncing around off-road WILL take a toll much faster than on-road, but any over-stressed component WILL fail in time- better not to take the chance. $700 for a tire carrier is a WHOLE LOT cheaper than possibly hurting or killing someone due to negligence- Mark W.
thaduke2003 is offline   Quote Quick Reply
Old 11-16-2010, 08:02 PM   #28
Jeeper
 
scbesse's Avatar
 
Join Date: Oct 2010
Location: Barrie Ontario
Posts: 41
I have had a 35 on my tailgate for 2 years. Hinges on gate are wallowing out. You need a carrier for sure. Mine is coming in a couple weeks


As for gears...... REGEAR, I am running Stock 3.73 in an Auto but not for long.......

Take the advice from most and do it proper before something breaks.
__________________
2008 Jeep JK Unlimited
OME+40 lift OME LT Shocks~4.5" 1"BL
Teraflex CA's Terflex SS
JKS disco's JKS front and rear TB's
Mopar stubby bumper Mopar Rock Rails
12k Runva winch KC Slimlites
scbesse is offline   Quote Quick Reply
Old 11-16-2010, 08:21 PM   #29
Jeeper
 
DANIMAL's Avatar
 
Join Date: Aug 2008
Location: Pewaukee,WI
Posts: 428
What about using one of these?

Tailgate Tire Carrier by Hanson Offroad and Other Jeep Parts and Jeep Accessories by 4 Wheel Drive Hardware-RH1

I am thinking of going with something like this when I upgrade to 35s. Anyone have any experience with this? It is less cost than a new bumper with a tire carrier.
__________________
2013 Gecko JK Sport S
2009 White JKU Rubicon
DANIMAL is offline   Quote Quick Reply
Old 11-16-2010, 08:24 PM   #30
Member
 
Join Date: Mar 2009
Location: Upstate/Eastern NY
Posts: 1,960
Send a message via AIM to thaduke2003
Still putting the weight and strain of the spare on the stock hinges. That's where about 2/3 of them break. Some crumple right in the middle, which a carrier like that MIGHT help, but I doubt it. Also, that looks like it holds the spare out a bit further than the stocker, which would only make things worse- Mark W.

thaduke2003 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
10 of the Dumbest Things Put on a Jeep bwdenman General Jeep Discussion 290 10-11-2013 05:33 AM
regular street tires. opinions on whats best needed!! Oliver_Crangle YJ General Discussion Forum 6 09-05-2008 08:14 AM
New Rims and Tires, How Big are the Old Ones? kEat General Jeep Discussion 10 12-19-2007 06:33 AM
Are the tires in the US the same than in Germany? nicolas-eric General Jeep Discussion 7 08-27-2007 03:13 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 01:44 PM.



Jeepฎ, 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