33's vs 35's with 3.73 TOWING ability. - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK 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 06-01-2014, 10:06 AM   #1
Jeeper
 
Join Date: Oct 2012
Posts: 67
33's vs 35's with 3.73 TOWING ability.

Hello all. Sorry for starting another 33 vs 35 thread but I have scoured google and numerous forums looking for answer to my dilemma with no luck. I am stuck between 295/75r16 and 315/75r16 but need to tow about 2000lb. I have 2013 2 door auto with 3.73. I 'd like the 35's as they are only $10 more/tire but will go with 33's if the 35's are unsafe, or I need to do too much to the jeep. I.e. axle shafts, c gussets and drive shafts. I dont crawl and for what I do off road. I live in the dallas so it is generally flat. My longer trips are usually to ozarks in Arkansas/Missouri. Any help would be greatly appreciated.

tatrhed is offline   Quote Quick Reply
Old 06-01-2014, 10:27 AM   #2
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,512
Get the 35s because you will want them and wish you'd gotten them not long after the newness of 33s wear out. 35s aren't unsafe any more than 33s, no issues there.

You'll still be able to tow. The weight of the tire you choose will affect the power you have but after putting them on its apples to apples..

__________________
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 06-01-2014, 10:52 AM   #3
Jeeper
 
Tweak's Avatar
 
Join Date: Jan 2013
Location: Keller, TX
Posts: 2,664
my 13 auto with 3.73's is on 37's (getting new axles, not regearing these) and I have towed a fairly stout trailer loaded down with an LTZ400, coolers, camping gear, tools, generator, fuel, etc. just fine. I towed it all from DFW to hot springs Arkansas last thanksgiving and hardly knew it was back there. The jeep was just a little more sluggish.

The key is making sure that you have 10% of the trailers weight on the tongue. I could tell the difference between the Z400 parked directly over the axle and with it parked up against the front of the trailer.

it isnt too much fun on 37's but it works. I wouldnt even hesitate to tow 2k on 35's.

Tweak is online now   Quote Quick Reply
Old 06-01-2014, 11:40 AM   #4
Jeeper
 
Join Date: Oct 2012
Posts: 67
ESP: I am already at the point I want 35 instead but was worried about needing to beef up to many compnents with it. Thanks for the input.

Tweak: that is pretty much what I was looking for. Well minus 37's, but it works out in my favor this time. What kind of mpg do you get on that trip with out the trailer?
tatrhed is offline   Quote Quick Reply
Old 06-01-2014, 11:56 AM   #5
Jeeper
 
Tweak's Avatar
 
Join Date: Jan 2013
Location: Keller, TX
Posts: 2,664
between 13 and 15 depending on wind direction
Tweak is online now   Quote Quick Reply
Old 06-01-2014, 12:10 PM   #6
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by Tweak View Post
between 13 and 15 depending on wind direction
That seems pretty good, all things considered.
tatrhed is offline   Quote Quick Reply
Old 06-01-2014, 01:33 PM   #7
Jeeper
 
mitternacht's Avatar
 
Join Date: Jan 2012
Posts: 29
Go with 33s. I have the stock 32s on my Rubi with 4.10 and the manual transmission. It tows 1500-2000k OK, but it is a bit weak. I have to keep grabbing 5th for any mild hill on the interstate to maintain speed.


Your Automatic in 5th: 0.83*3.73=3.09
My Manual in 6th: 0.797*4.10=3.26
__________________
mitternacht is offline   Quote Quick Reply
Old 06-01-2014, 02:24 PM   #8
Jeeper
 
Norge17's Avatar
 
Join Date: Nov 2013
Posts: 59
I have 315/75/16r Duratracs 2010 2 door 3.73 gears and the most I've towed around is 1500 pounds for about 100 miles. I was able to keep up with traffic fine. The main thing to be worried about is stopping not pulling. Just use common sense and leave yourself extra room to slow down and you'll be fine.
Norge17 is offline   Quote Quick Reply
Old 06-01-2014, 03:44 PM   #9
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by mitternacht View Post
Go with 33s. I have the stock 32s on my Rubi with 4.10 and the manual transmission. It tows 1500-2000k OK, but it is a bit weak. I have to keep grabbing 5th for any mild hill on the interstate to maintain speed.


Your Automatic in 5th: 0.83*3.73=3.09
My Manual in 6th: 0.797*4.10=3.26
That is something I need to keep in mind. When we take the trip in my wife's '12 jku with 3.21 and 225's it has to shift to 4th a few times at the end of the trek.
tatrhed is offline   Quote Quick Reply
Old 06-01-2014, 03:45 PM   #10
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by Norge17 View Post
I have 315/75/16r Duratracs 2010 2 door 3.73 gears and the most I've towed around is 1500 pounds for about 100 miles. I was able to keep up with traffic fine. The main thing to be worried about is stopping not pulling. Just use common sense and leave yourself extra room to slow down and you'll be fine.
Arnt those 33-33.5 mounted?
tatrhed is offline   Quote Quick Reply
Old 06-01-2014, 03:56 PM   #11
Jeeper
 
Norge17's Avatar
 
Join Date: Nov 2013
Posts: 59
Quote:
Originally Posted by tatrhed View Post

Arnt those 33-33.5 mounted?
Yeah mine are 34.6 on the wheel alone and 33.4 mounted.
Pretty sure all 315/75/16r are 34.6 and if you want a true 35 you have to get the ones that say 35x whatever but im not positive
Norge17 is offline   Quote Quick Reply
Old 06-01-2014, 06:57 PM   #12
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by Norge17 View Post
Yeah mine are 34.6 on the wheel alone and 33.4 mounted.
Pretty sure all 315/75/16r are 34.6 and if you want a true 35 you have to get the ones that say 35x whatever but im not positive
From what I have read about in various places, true size varies from make to make. In the same brands too.
tatrhed is offline   Quote Quick Reply
Old 06-02-2014, 12:56 AM   #13
Jeeper
 
Lusus_Naturae's Avatar
 
Join Date: Oct 2012
Location: OKC, missing WI
Posts: 2,421
My 315/75/16 Goodyear Duratracs measure 33.75" from ground to top with 30 psi when mounted on the Jeep. Unmounted maybe a bit higher. I tow with mine and it's not a problem, the shorter 2 door will be a bit more wiggly on back if you load wrong.

The biggest difference is going to be a 3.8 engine vs Pentastar. I towed stuff with the Tj plenty, the JKU is a dream compared to the TJ now and I didn't think the TJ was that bad.
__________________
2013 JKU Sport, billet, auto, 3.73, LSD, 315/75/16 Duratracs on MB 72, 10A springs, Bushwacker flatties

Sold - 2005 TJ, red, auto, 3.73, 33" Duratracs, 4" lift
Ice storm casualty in 2007 - 2003 TJ, green, auto, 3.73, 33" Duratracs, 4" lift
Lusus_Naturae is online now   Quote Quick Reply
Old 06-02-2014, 01:11 PM   #14
Jeeper
 
Hilldweller's Avatar
 
Join Date: Apr 2008
Posts: 4,156
Quote:
Originally Posted by mitternacht View Post
Go with 33s. I have the stock 32s on my Rubi with 4.10 and the manual transmission. It tows 1500-2000k OK, but it is a bit weak. I have to keep grabbing 5th for any mild hill on the interstate to maintain speed.


Your Automatic in 5th: 0.83*3.73=3.09
My Manual in 6th: 0.797*4.10=3.26
I agree.
I have a '14 manual trans 3.73 on 255/80-17. Just got back from a 3000 mile roadtrip and I had to row the gears quite a bit when it got hilly. 18 mpg on the flat and 12 mpg in the really steep stuff.
If I had 4.10s it would be perfect for 33s. I figure 4.88 for autotrans and 35s or 4.56s for a manual and 35s.

__________________
Gone camping,
Bill

Hilldweller is offline   Quote Quick Reply
Old 06-02-2014, 10:39 PM   #15
Jeeper
 
Chunks's Avatar
 
Join Date: Jan 2012
Location: St. Charles, IL
Posts: 130
No problem towing with my 2012 JKU, 35" DT's with 3.73 gears. I typically tow demo trailers for work that weigh in at 2000-2500lbs. The only downside is my gas mileage.
__________________
2012 JKU "Big Pimpin" Sahara
|AEV 2.5 Lift w/Bilstein 5100's|AEV Geometry Correction Brackets|Rugged Ridge 17" Wheels|315\70\17 Duratracs|PIAA Horn Upgrade|Trucklites LED Upgrade/IPCW Taillights
Chunks is offline   Quote Quick Reply
Old 06-04-2014, 08:14 PM   #16
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by Hilldweller View Post
I agree.
I have a '14 manual trans 3.73 on 255/80-17. Just got back from a 3000 mile roadtrip and I had to row the gears quite a bit when it got hilly. 18 mpg on the flat and 12 mpg in the really steep stuff.
If I had 4.10s it would be perfect for 33s. I figure 4.88 for autotrans and 35s or 4.56s for a manual and 35s.

Great info. Your doing pretty much what i am need for my trailer. The pic is awesome. Is that a little guy trailer? I was going to get one of the 6 wides but decidednto hold off till I can afford a microlite.
tatrhed is offline   Quote Quick Reply
Old 06-05-2014, 10:38 AM   #17
Jeeper
 
Hilldweller's Avatar
 
Join Date: Apr 2008
Posts: 4,156
Quote:
Originally Posted by tatrhed View Post
Great info. Your doing pretty much what i am need for my trailer. The pic is awesome. Is that a little guy trailer? I was going to get one of the 6 wides but decidednto hold off till I can afford a microlite.
It's a Little Guy 6x10 Silver Shadow with a Rough Rider package added. Two 122-AH boat batteries, ARB fridge, 2-burner propane stove, some cabinets. We've dragged it and camped in 15 states so far in the 3 years we've had it.
It's heavy for a teardrop but it can take a lickin'.

I made a video after the first year with it.
One Year with Little Guy - YouTube
__________________
Gone camping,
Bill

Hilldweller is offline   Quote Quick Reply
Old 06-05-2014, 02:18 PM   #18
Jeeper
 
Menasor's Avatar
 
Join Date: Mar 2013
Posts: 134
For Memorial Day weekend I towed my 16 foot Bayliner 400 miles round trip and averaged 16 mpg. This is on a 2013 Sport S, 6 speed w/3.73's, 2.5" lift and 35 MT's. Performance was good on the flat roads, but became sluggish on the hills. I was running the 87 tune on the Flash-paq, so maybe the 91 tune will help with the sluggishness. For the minimal cost, I wouldn't hesitate on the 35's. You will be happy with the 33's until you see the first few Jeeps with 35's and 37's.
__________________
KCCO.....GO WINGS!
Menasor is offline   Quote Quick Reply
Old 06-05-2014, 06:09 PM   #19
Jeeper
 
Sharpie's Avatar
 
Join Date: Dec 2012
Location: Henderson, TX
Posts: 142
I've got a 2014 jku automatic with 35's and 3.73s. Also have the AEV procal installed. Pulling my 14' trailer loaded down with my four wheeler and hunting gear is not bad at all. It's a little sluggish on hills but not bad. Just takes it out of overdrive. Still gets about 13-14 mpg pulling the trailer
__________________
2014 Oscar Mike JKU, 2.5" Rubicon express, AEV geometry brackets, spidertax spacers, rubicon wheels...all for now!

Psalm 144:1 "Blessed be the Lord, my rock, who trains my hands for war, and my fingers for battle"
Semper FI!
Sharpie is offline   Quote Quick Reply
Old 06-07-2014, 08:32 PM   #20
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by Sharpie View Post
I've got a 2014 jku automatic with 35's and 3.73s. Also have the AEV procal installed. Pulling my 14' trailer loaded down with my four wheeler and hunting gear is not bad at all. It's a little sluggish on hills but not bad. Just takes it out of overdrive. Still gets about 13-14 mpg pulling the trailer
I really want to go with the 35's, but the more I look the cost to do it right. Yes it can be done with no lift, trim fenders etc can be done for about the cost of the bump stops. I only want to do it once. The whole mpg loss steers me away too. Im at 17 (by hand) now, but it should go up with 33's as I think they are at the top of the bell curve for my gears before losing mpg. I have 225's now and its way over geared.
tatrhed is offline   Quote Quick Reply
Old 06-07-2014, 08:33 PM   #21
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by Hilldweller View Post
It's a Little Guy 6x10 Silver Shadow with a Rough Rider package added. Two 122-AH boat batteries, ARB fridge, 2-burner propane stove, some cabinets. We've dragged it and camped in 15 states so far in the 3 years we've had it.
It's heavy for a teardrop but it can take a lickin'.

I made a video after the first year with it.
One Year with Little Guy - YouTube
Thats a nice rig.
tatrhed is offline   Quote Quick Reply
Old 06-07-2014, 10:27 PM   #22
Jeeper
 
Paul04tj's Avatar
 
Join Date: Oct 2012
Location: Shelby Twp. MI
Posts: 656
Images: 112
We are joining the Little Guy Family this week.
Picking up a 5 Wide.

Can't wait!
__________________
Bright White 2 door soft top 6 speed MOAB..
Paul04tj is offline   Quote Quick Reply
Old 06-07-2014, 11:35 PM   #23
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by Paul04tj View Post
We are joining the Little Guy Family this week.
Picking up a 5 Wide.

Can't wait!
Borrowed one once. Shocked at comfortable and quiet it was inside at night.
tatrhed is offline   Quote Quick Reply
Old 06-08-2014, 01:25 AM   #24
Jeeper
 
ctvenegas's Avatar
 
Join Date: Aug 2013
Location: Rio Rancho, NM
Posts: 32
Images: 6
I HAVE 285-70 R 17 AND JUST GOT BACK FROM A 13 HOUR ROD TRIP, SLUGGISH ON THE HILLS SO i AM SURE 35'S WOULD HAVE BEEN A LOT WORSE, I LIKE THE LOOK OF A 35 BUT I FEEL THE 33S ARE DOING GOOD. WAS LOADED DOWN WITH LOTS OF GEAR AND THREE ADULTS AVERAGED 14.6 MPGS. i HAVE 3:73 WOULD LIKE TO GET 4;88S OR 5:13S ANY RECOMMENDATIONS?
ctvenegas is offline   Quote Quick Reply
Old 06-08-2014, 05:41 PM   #25
Jeeper
 
dave59's Avatar
 
Join Date: Apr 2014
Location: Wasilla, Alaska :)
Posts: 68
I'm getting ready to move to Alaska in a couple weeks. Me and my border collie (Sadie) are driving back up. I just put my 32"s back on for the trip. It's amazing the difference 1" makes when it comes to uphill and towing pep! I got the pep back with a Superchip 3275 tuner, but the 32s have even more pep on hills. I'm in Pa now, so I had plenty of hills to notice the difference on! 35"s would be worse than the 33s.
dave59 is offline   Quote Quick Reply
Old 06-10-2014, 09:54 AM   #26
Jeeper
 
Join Date: Oct 2012
Posts: 67
Quote:
Originally Posted by dave59 View Post
I'm getting ready to move to Alaska in a couple weeks. Me and my border collie (Sadie) are driving back up. I just put my 32"s back on for the trip. It's amazing the difference 1" makes when it comes to uphill and towing pep! I got the pep back with a Superchip 3275 tuner, but the 32s have even more pep on hills. I'm in Pa now, so I had plenty of hills to notice the difference on! 35"s would be worse than the 33s.
What had you been running before putting the 32's back on?
tatrhed is offline   Quote Quick Reply
Old 06-11-2014, 05:04 PM   #27
Jeeper
 
dave59's Avatar
 
Join Date: Apr 2014
Location: Wasilla, Alaska :)
Posts: 68
285/70/17s (33x12")
dave59 is offline   Quote Quick Reply
Old 06-12-2014, 04:58 AM   #28
Jeeper
 
Ruski's Avatar
 
Join Date: Apr 2014
Location: Brooklyn, New York
Posts: 364
Quote:
Originally Posted by dave59 View Post
285/70/17s (33x12")
It's actually more like 33x11.2
__________________
2014 JKU Sport S, 6 speed manual, 4.88 gears, ARB lockers (front and rear), synergy ball joints, axle sleeves, c gussets, 2 inch coil spacers for now (planning on 3.5 inch Metalcloak Game Changer ARB in the near future) 315/75/16 Duratracs sitting on ProComp 7069, AEV snorkel with a pre filter. Stubby front bumper (ebay), Smittybilt XRC 9500 lb winch, KC fog lights, KC windshield mounted long range spot lights. Rock sliders/steps (ebay).
Ruski is online now   Quote Quick Reply
Old 06-12-2014, 05:09 AM   #29
Jeeper
 
Hilldweller's Avatar
 
Join Date: Apr 2008
Posts: 4,156
Quote:
Originally Posted by ctvenegas View Post
I HAVE 285-70 R 17 AND JUST GOT BACK FROM A 13 HOUR ROD TRIP, SLUGGISH ON THE HILLS SO i AM SURE 35'S WOULD HAVE BEEN A LOT WORSE, I LIKE THE LOOK OF A 35 BUT I FEEL THE 33S ARE DOING GOOD. WAS LOADED DOWN WITH LOTS OF GEAR AND THREE ADULTS AVERAGED 14.6 MPGS. i HAVE 3:73 WOULD LIKE TO GET 4;88S OR 5:13S ANY RECOMMENDATIONS?
First, stop shouting...

4.10s will spin 33s great for most people on the 3.6L. If you tow often, I'd bump to 4.56.
Go down a gear or two for the 3.8L. Start with 4.56 and work deeper.
__________________
Gone camping,
Bill

Hilldweller is offline   Quote Quick Reply
Old 06-12-2014, 09:33 PM   #30
Jeeper
 
Join Date: Oct 2012
Posts: 67
[QUOTE=Hilldweller;11271978]First, stop shouting...

4.10s will spin 33s great for most people on the 3.6L. If you tow often, I'd bump to 4.56.
Go down a gear or two for the 3.8L. Start with 4.56 and work

I've only heard of one person wanting to re-gear lower than 4.10 on 33's (with 3.6) and they drove daily in the unpaved mountains in colorado. According to the gear chart 33 and 4.10 fall into the same category as my 3.73 and 225's. IF the performance is the same, it feels over geared for my tastes.

tatrhed 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 12:52 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