33ís or 35ís? - Rubicon Owners Forum
 43Likes
Reply
 
LinkBack Thread Tools
post #1 of 28 (permalink) Old 05-23-2019, 02:24 AM Thread Starter
Rubi Noobie
 
sbsyncro's Avatar
 
Join Date: May 2019
Location: Santa Barbara, CA
Posts: 71
33ís or 35ís?

Trying to pose this as a straightforward question but there are a lot of angles to this for me. Interested in peoplesí experience/opinions.

Should I run 33ís and re-gear back to 4.10 (or live with running 2800 rpm in the slow lane) or up-size to 35s?

The Jeep:
2017 JKUR I bought used with 15k miles (dealer trade in)
Rock Krawler 2.5Ē lift with Bilstein 5100s
Fox ATS 2.0 steering stabilizer.
G2 Performance 4.88 gears
Tom Woods shafts f&r
Currently wearing OEM wheels and tires. Also have a partial set of 33Ē tires on JLUR wheels

My goals/philosophy of use:

The Jeep will be used to drive around town on occasion by both me and my wife and will be used almost every weekend for fishing, backpacking, and hunting trips. These trips will usually involve several hours of highway travel in each direction.

Iím 50+ years old and Iíve done the crazy ďdump money into a hole chasing problems and then sell itĒ thing already more times than I should have with cars and 4x4s.

I want something that will be very reliable and well mannered, but will get me to my buddyís place on a remote cove in Baja when the roads are washed out or get me deeper into a canyon so I can get a better head start on opening day of quail season. More so than my F-150, F-250, or Ranger FX4 LII can/could do. (But more comfortable than my FJ40, CJ5, CJ7, or Scout).

Iím not looking for rock-bashing, belly-dragging, wheel-bending, axle-snapping rock crawling just for the sake of rock crawling. (BTDT). I just want a cool Jeep that gets me places and keeps a smile on my face and doesnít piss off my wife.

Very interested to hear from people that have gone from 33ís to 35í and whether it affected reliability or general maintenance requirements. Also would love to hear from anyone that ran 35s and decided to go back to 33s and why.



Sent from my iPhone using Tapatalk

2017 JKUR | 6-spd Manual | Rock Krawler 2.5" Flex | G2 4.88 Gears | Bilstein 5100s | Fox 2.0 ATS Stabilizer | Smittybilt Atlas F & R bumpers | Smittybilt X20 Winch | ARB Diff Covers | BesTop Sunrider | Woods 1310 F & R shafts | Magnaflow axle-back | K & N CAI | ARB CKMA12 | too many cheap light bars
sbsyncro is offline  
Sponsored Links
Advertisement
 
post #2 of 28 (permalink) Old 05-23-2019, 08:51 AM
Official WebWheeler
 
Mouse's Avatar
 
Join Date: Mar 2007
Location: West Ogden, UT
Posts: 3,311
Garage
33's are basically the stock JK-sized tire. 35's fit very well and would match the 4.88 gears. With a JKU, you need a bigger tire. If I'm limited to those choices for a JKU going offroad, I will pick the 35's. I'll also recommend that you make sure you have a good belly skid.


Your axles should be perfectly fine, strength-wise to handle 35's with no reliability issues
johncanfield likes this.

Lives in garage:

2004 Red Jeep TJ "X", big tires, suspension, stereo delete, dent in cowl.


1982 Red Jeep Scrambler, small block chevy on 35's.

"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." -Benjamin Franklin
Mouse is offline  
post #3 of 28 (permalink) Old 05-23-2019, 09:14 AM
Administrator
 
johncanfield's Avatar
 
Join Date: Oct 2010
Location: Texas Hill Country
Posts: 10,422
Garage
What Don said, you need 35s with a 4 door. A 2 door would be okay on 33s as far as ground clearance but not a 4 door.

John - WB5THT
=======================
2006 LJ, not stock
johncanfield is offline  
 
post #4 of 28 (permalink) Old 05-23-2019, 10:32 AM
Rubicus Maximus
 
Join Date: Mar 2017
Location: B.C. Canada
Posts: 477
The problem with 35's...
I have 2.5 lift and 35's and wouldn't go back to 33's. The only problem is that with a 2.5 lift your up travel gets limited. I have high clearance fenders and have adjusted my bumps to get full stuff. If I had stock fenders then I would end up riding on the, or very close to the bumps all the time.
I assume you will have a 12.5 tire. with a 33 you could tuck it in a little more. Do you have fender laws?
If I started over I would go 2.5 lift and a 34x10.5 tire then after a year I would still upgrade to a 35. It would just be a dumb thing that I know I would do. I am 50 and still havn't learned about vehicles and money.
SteveVB and johncanfield like this.

2014 JKU, JKS lift,Poison spyder flares, bombshell covers,Rancho D2 control arms, JKS adjustable track bars, 35" Tires. GrabBars, Crawler Conceptz rear bumper, Smitty front bumper, Winch. Rough Country inner fenders, Teraflex Disco Mud Flaps
Backseat Dobermann Security
rlenglish is offline  
post #5 of 28 (permalink) Old 05-23-2019, 01:46 PM Thread Starter
Rubi Noobie
 
sbsyncro's Avatar
 
Join Date: May 2019
Location: Santa Barbara, CA
Posts: 71
Thanks guys. I like this forum - a little less activity than the general Wrangler forums, but the responses always seem genuine and well-considered. I appreciate it; thanks for welcoming me into the fold.

Quote:
Originally Posted by Mouse View Post
33's are basically the stock JK-sized tire. 35's fit very well and would match the 4.88 gears. With a JKU, you need a bigger tire. If I'm limited to those choices for a JKU going offroad, I will pick the 35's. I'll also recommend that you make sure you have a good belly skid.

Your axles should be perfectly fine, strength-wise to handle 35's with no reliability issues
I still have the 4.10 gears in a box and would be willing to spend the money to have them swapped back if the ride and reliability/longevity of suspension components is going to be noticeably better with 33's. I'm worried about all the extra maintenance and constant tweaking that might be needed when I go to 35's. (Now I need adjustable front UCAs to get the pinion angle right, need to replace the rear control arms with adjustable, etc. etc, etc,)

When you say "belly skid" are you talking about a skid plate that covers the entire undercarriage as opposed to individual skids for the various pieces? Can you point me to a good example that is popular?

Quote:
Originally Posted by rlenglish View Post
The problem with 35's...
I have 2.5 lift and 35's and wouldn't go back to 33's. The only problem is that with a 2.5 lift your up travel gets limited. I have high clearance fenders and have adjusted my bumps to get full stuff. If I had stock fenders then I would end up riding on the, or very close to the bumps all the time.
I assume you will have a 12.5 tire. with a 33 you could tuck it in a little more. Do you have fender laws?
If I started over I would go 2.5 lift and a 34x10.5 tire then after a year I would still upgrade to a 35. It would just be a dumb thing that I know I would do. I am 50 and still havn't learned about vehicles and money.
All the time? As in riding down the street and pulling into driveways? Or do you mean that you do so much extreme off road flexing that you would be on the bump stops "all the time" (while in heavier-duty scenarios off road)?

If I'm understanding you correctly, the thing I'd need to think about replacing if I go with 35's is the fender flares. Is the problem generally the outside lip making contact with the tire (because it extends outside the flare) and thus the need for "flat" fenders? Is there an option for a "wider" flare that will keep the mud from slinging all over the sides of the Jeep? (or are those all f'ugly?). I don't believe fender laws are really enforced here unless they really want to get you for something. Front license plates, however, are something people get routinely pulled over and ticketed for...

Just out of curiosity, why would you go with 34's first and then 35's?.

The crazy thing is that I'm sitting here with 2 complete sets of OEM Rubicon wheels, all of them with less than 2,000 miles on them. (5) JKUR with a full set of the OEM 32x9.5" BFG mud terrains and (5) JLUR along with three remaining OEM 33x11" BFG KO2s. But I've pretty much convinced myself that I don't want to run spacers, so i'm looking at new wheels (hopefully funded by selling all this stuff) and then either buy 2 new KO2s in 33x11" or try to sell those and go with 5 new 35x12.5's. My inner child of course wants the 35's but not if it is going to force me to always worry about issue with my suspension or lead me down a rat hole of constant tweaking to figure out why things are wobbling, scraping, grinding, etc...

I have a set of the Rock Krawler adjustable front UCAs in a box, so it would be just a matter of installing them and then finding a competent shop to set the pinion angle, right?

Sorry... so many questions.
sbsyncro is offline  
post #6 of 28 (permalink) Old 05-23-2019, 02:02 PM
Rubicus Maximus
 
aeroshots's Avatar
 
Join Date: Sep 2010
Location: Gulf Breeze
Posts: 586
Garage
x3 on the 35s. Based upon you're very clear questions and analysis, I'd bet you would have very little issue "tuning" your Jeep for the 35s.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
aeroshots is offline  
post #7 of 28 (permalink) Old 05-23-2019, 02:35 PM
RubiconOwnersForum.com Premium
 
mariodesmo's Avatar
 
Join Date: Sep 2007
Location: SF Bay Area
Posts: 2,456
Send a message via MSN to mariodesmo
X4 on the 35's!

As for the gear question:
I'm running my TJ with a 5 speed stick and the 35's, with 4.88's and it is perfect around town and on the highway (65-75mph).

My gearing with the NV3550 is probably a little different that your JK. That being said, I would not pay good money for going back to the 4.10's. As you wrote, you're done with throwing money at vehicle problems, so don't do it!

On a side note, I have a lot of fun pulling away (for about 100 yards) from Beemers and Tesla's from a stop light. Once they figure out what is going on, they're gone but it is fun at least for a little while. lol

As for the other questions:
You've bitten off on quite a pickle. I would make a decision on 35's, then take one thing at a time as you discover how your rig responds to the 35's.
Mouse, aeroshots and johncanfield like this.

'02 TJ Sport, ARB's, 4.88s, NV241, Nth 6in LA, D44's, 35in KM2's, rear discs, Antirocks,
Warn XD9000i, Superior Evolution, and caught fire only once, N7YMZ
mariodesmo is offline  
post #8 of 28 (permalink) Old 05-23-2019, 03:21 PM Thread Starter
Rubi Noobie
 
sbsyncro's Avatar
 
Join Date: May 2019
Location: Santa Barbara, CA
Posts: 71
Thanks again. So it looks like options in a 35x10.5 are limited (I prefer a skinny military look and less weight; I don't run deep sand dunes, so "flotation" from wide tires isn't really a decision criterion for me)

I just built a cart with 5 inexpensive (Mamba "M18") wheels and (5) KO2s in 34x10.5 and it was $2,700. Thats gonna be a tough one to sneak past the wife. 285/75's are a couple hundred less for 5, but they are load range E - not sure if that makes a difference...

OTH, I can get the wheels and a pair of 33" BFG KO2s to match the ones I destroyed for about $1,450. I figure I might be able to get $600-800 for the JKUR wheels + KM2s and probably about the same for just the JLUR wheels (I hope), which means I have $1,200-ish to play with. Perhaps I just live with that (and travel slowly on the highway) until I'm ready for the investment into 35's...

I guess I have to decide whether that extra inch is worth $1,300... (plus the $1,000 for flat fenders)

But I think the general consensus so far is "35's aren't going to be any more of an issue in terms of ride quality, handling, or reliability of suspension components than 33's would be..." (other than the fender issue pointed out by rlenglish, which is gonna cost an additional ~$1,000 to fix) . Am I right?

When I ran 4.88's & 33's on the CJ and 5.13's & 35's on the Scout I, I solved the freeway RPM problem with Warn Overdrives. That was a great solution. Does anyone make something like that for the JK 6-speed?
sbsyncro is offline  
post #9 of 28 (permalink) Old 05-23-2019, 03:39 PM
Rubi Crawler
 
DK2014JK's Avatar
 
Join Date: Jan 2014
Location: Long Island, NY
Posts: 242
I've put about 50,000 miles on my JK with 35" tires, the first 12,000 miles were with stock suspension and flat fenders. I have had zero issues that I would blame on the size of the tires. Pinion angle will be affected by your lift not your tires. The bigger tires will move the axles and transfer case the same amount resulting in no change in angle. If the angle is currently correct and you have no drive shaft issues you won't need to change anything on that front. I don't remember if your lift came with upgraded steering components. If yes, don't worry about it, if no you might want to look into replacing the draglink, trackbar and tie rod with 35" tires. That's also something that you can wait and see to spread out the expense, but the heavier tires will wear down the components more quickly.


Do some googling on cutting the stock JK fenders. With a Dremel and steady hand you can have flat fenders for an hour or two's worth of work. I've seen some that were so well done they look like they could be aftermarket fenders.


When comparing the cost of 33s to 35sdon't forget to add in the cost of gearing back to 4.10. That won't be cheap either.
aeroshots, FLLJ and sbsyncro like this.

Dan
DK2014JK is offline  
post #10 of 28 (permalink) Old 05-23-2019, 07:27 PM
RubiconOwnersForum.com Premium
 
katswuy's Avatar
 
Join Date: Jul 2006
Location: Brawley, CA.
Posts: 1,305
I have the 34 X 10.50 X 17 BFG KO2's, I like the tires, but it was hard to find wheels with the proper offset that weren't too wide. Most of the wheels are designed for 11--12 inch wide tires. I think the ones that I got were 9 inches wide, they are a bit too wide for the tires IMHO. If I did it over again I would have run my stock Rubicon wheels with spacers to get the correct offset. I run SpyderTrax spacers on my LJ and have not had any problems. Just be sure they are hub and wheel centric. By the way, our 4-door has 3.73 gears, it hasn't been a problem so far, with the 5-speed automatic I just shift down a gear if I think the engine is lugging. Off-road you can control your low speed progress with left footed braking, so as to not lunge over rocks too fast.
johncanfield and sbsyncro like this.

The liver is evil, it must be punished.
_______________________________

2006 LJ Rubicon, 6 sp. 3.5/4 in. RE lift, Rockhard front bumper, Hanson rear bumper, ORO spare/dual jerry can carrier, Moab wheels with Spidertrax 1.5" spacers, 285/75R16 BFG KO2's, Misch overhead shelf, Black Box 2-way, Kenwood Excelon double din nav/cd/dvd/am/fm/sirius system, Rigid SideShooter front LED's, Warn winch, custom Viair OBA, Banks Cat-back exhaust
katswuy is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Rubicon Owners 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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
one 33 and one 35 on the rear (33 inch spare?) csmith TJ Drivetrain and Horsepower 15 03-10-2005 10:38 AM
backspacing for 33&35 same? Savage TJ Suspension and Steering, Tires and Wheels 16 06-17-2004 01:12 AM
How Big is Too Big? 33" or 35" Tires & What L Detour TJ Suspension and Steering, Tires and Wheels 38 06-04-2004 08:45 AM
33", or 35" tires?..... some interesting data jimblackmax TJ Suspension and Steering, Tires and Wheels 1 12-03-2003 11:09 PM
33's then 35's Savage TJ Suspension and Steering, Tires and Wheels 8 11-17-2003 12:29 AM

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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome