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Old 07-07-2010, 08:44 AM   #1
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Wheel question

Sorry guys when it comes to wheels and women..im lost... here is my question

2003 wrangler rubicon 16x8 wheels stock....can i go to 15x10 wheel without doing anything to the brakes and what have you??

Im putting a 2 in lift on it and going up to 32x11.50 tires....just want to get the skinny on it before i buy what i need.

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Old 07-07-2010, 08:58 AM   #2
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What kind of off roading do you want to do? You may not want to go to a 10" rim as you have a bigger chance of loosing the bead. The short answer is yes you can go to a 15x10 as long as the bolt pattern and the backspacing is correct, but I would ask around about the 10" rim verses the 8" rim. Oh yea it will not affect the brakes either.

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Old 07-07-2010, 09:06 AM   #3
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what bead you talkin about??
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Old 07-07-2010, 09:09 AM   #4
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The bead is the seal between the rubber tire and the aluminum or steel rim. Having a smaller rim compared to the tire width both protects the rim and keeps more pressure on the bead so it does not separate when hit hard wheeling.
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Old 07-07-2010, 09:11 AM   #5
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The bead that holds the tire on the wheel. Most of us use an 8" wheel for a 11.5, or 12.5" wide tire. This allows the wheel not to unseat when you airdown to offroad. A 15" wheel will be fine on your TJ, the backspacing is where you need to concern yourself mostly. Stock bs is 5-5.5" depending on the wheel, so you want no more than 5" bs, 4.5" would be perfect for an 8" wheel with that size tire. When you alter the bs, the wheels and tires will move to the outside of the flare accordingly.
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Old 07-07-2010, 09:53 AM   #6
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ok so im going to get 31 10.50 15 tires....can i go with a 15x8 wheel with 4.50 backspace?
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Old 07-07-2010, 10:02 AM   #7
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i know i said i was going with a 32 in but the lift im goin with wont be ideal for that size..going down an inch :P
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Old 07-07-2010, 10:17 AM   #8
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Yes you can put a 31x10.5 on a 15x8" wheel. You don't even need a lift for that size or new wheels. You can put 31's on your stock moabs. No need for less backspacing. Some 10.5's run wider than others and you may need to adjust the steering stops on stock wheels. I didn't with mine on my Canyons, but mine were narrow 10.5's...
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Old 07-07-2010, 10:21 AM   #9
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31x10.5 works with no lift...thats what I run.
If you are putting on a 2" lift, I think you should be able to do 32" or maybe even 33"
All of which will probably work on the 15x8 wheel.
I think.
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Old 07-07-2010, 10:27 AM   #10
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Yes the 31s will work with no lift on stock rims. Depending on the tire size (not all of them are the same even thought they say they are) you may rub on the control arm, but that is a really easy fix with about $.50 of washers on stop bolts. I run 31s with a 2.25" BB. Check out the pictures I have in my profile. I could clear 32s and will when these tires wear out. Hope this helps. Oh yea I have the 8" canyons.
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Old 07-07-2010, 10:33 AM   #11
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Jerry just answered the backspacing question in another thread. He is super knowledgeable and when he speaks people listen. Here it is http://www.wranglerforum.com/f5/31-s...els-54625.html
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Old 07-07-2010, 10:41 AM   #12
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the problem is my wheels are semi bent so im in the market for new ones anyway. im lookin at a 2 in rubicon express budget lift and they recommend using 31's so you wont get any rub...32s will work..but you will rub... I'm thinkin about saving up and getting the 3.5 lift and running 32s...
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Old 07-07-2010, 11:05 AM   #13
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I am running 32 x 11.50 on 15 x 8-4" bs wheels, 2 1/2 lift, and no rubbing.
original post mentioned 16 x 8 wheels.- Didn't they go to 16" wheels to clear the front calipers ?
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Old 07-07-2010, 11:28 AM   #14
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the problem is my wheels are semi bent so im in the market for new ones anyway. im lookin at a 2 in rubicon express budget lift and they recommend using 31's so you wont get any rub...32s will work..but you will rub... I'm thinkin about saving up and getting the 3.5 lift and running 32s...
How'd you bend alloys? Usually they just break.
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Old 07-07-2010, 06:59 PM   #15
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How'd you bend alloys? Usually they just break.
I didnt...the previous owner did i guess...but they are warped...saw it myself while they were on the balancing block.....
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Old 07-07-2010, 07:23 PM   #16
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A 15x10 wheel is too wide for a 32x11.50 tire, it'd have trouble staying seated when you air the tires down for offroading. Stick with a 15x8.

InfernoGirl, I managed to dent one of my cheapy (American Eagle #054) cast aluminum wheels maybe 10 years ago. It was on the edge but I was actually able to bang the dent out with my trusty 2 lb. sledgehammer. I was surprised it dented and even more surprised I was able to bang the dent out as I heard they usually broke too. In all these years though, I have only actually broken one aluminum wheel and that was on a trail that caused a lot of carnage to my TJ, so bad it required welding and multiple parts (like two driveshafts to make one good one) to get it driveable again.
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Old 07-08-2010, 07:46 AM   #17
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ok one more question...can i run 31 10.50 15s on my stock jeep without rubbing? I'm not lifting it yet due to money issues...gonna save up for a rubicon express super flex....However i am in dire need of new wheels and tires....im going to get 31s for now but will go up when i get it lifted...I just want to make sure I wont be shooting myself in the foot for just getting the wheels and tires i need right now....
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Old 07-08-2010, 07:59 AM   #18
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nvrmind..i saw the post from Docl
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Old 07-08-2010, 03:38 PM   #19
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There's another thread called "31's on 15X8" that has info you may find useful.
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Old 07-15-2010, 10:41 AM   #20
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one more sub-question for this...if i were to get 35 12.50 15 size tires..could i run them on my 15x8 wheels?
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Old 07-15-2010, 11:02 AM   #21
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one more sub-question for this...if i were to get 35 12.50 15 size tires..could i run them on my 15x8 wheels?
yes..however you would want a min 4" of lift with that size tire. New rear driveshaft as well, plus a bunch of other stuff.
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Old 07-15-2010, 01:10 PM   #22
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^^^^This and a D44 if you don't already have one..... You have aftermarket or stock wheels? You can't put a 12.5 on a stock 15x8" wheel.... Well, you can, but the rear spring perches will eat your tires.....
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Old 07-15-2010, 03:37 PM   #23
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^^^^This and a D44 if you don't already have one..... You have aftermarket or stock wheels? You can't put a 12.5 on a stock 15x8" wheel.... Well, you can, but the rear spring perches will eat your tires.....
X2. And to further explain that, yes you can run 35x12.50 tires on aftermarket 15x8 wheels which don't have as much backspacing as factory 15x8 wheels do. The factory wheels have so much backspacing (5.25" to 5.5") that a 12.5" wide tire will severely rub its inside sidewall on the suspension. Aftermarket 15x8 wheels have much less backspacing, 3.75" typically, which positions the tire further away from the suspension so the tire's inside sidewall won't rub.
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Old 07-15-2010, 05:47 PM   #24
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Dude,I thought I was bad Going from 31" to 35" is HUGE difference Better have that checkbook ready for all the needed mods
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Old 07-15-2010, 07:32 PM   #25
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hahaha well i decided to get a RE 4.5 superflex lift put on it. Jerry introduced me to tom wood and they are sending me a new CV driveshaft for my 03 rubicon...Im going to do some muddin..but im not going too extreme..i think im going to get the 1310 CV DS instead of the 1350...id save about 130 bucks..that will be enough to get a 1 inch body lift... I have pro comp bullet-holes (polished) 15x8 BS 3.75 rims. after the lift and DS is installed im going to get some pro comp extreme A/T 35 12.50s...I'm just making sure I got all i need.

I know im gonna have to pitch the rear diff when i put the CV driveshaft on...does anyone know if the RE 4.5 arms allow this or will i have to use the cam bolts to adjust the diff?
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Old 07-15-2010, 07:47 PM   #26
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The RE arm lengths are adjustable which will allow you to raise the pinion angle to match the new TW driveshaft. Good decision to go with a Tom Wood CV driveshaft, he is one of the true gentlemen of the industry.
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Old 07-16-2010, 09:25 AM   #27
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The RE arm lengths are adjustable which will allow you to raise the pinion angle to match the new TW driveshaft. Good decision to go with a Tom Wood CV driveshaft, he is one of the true gentlemen of the industry.
Jerry...you think i should be ok with the 1310s? I'm not going hardcore rock-climbing or anything but i do intend on muddin and flexin my jeep a bit...
should i go with the 1350s? 130 bucks more aint that much more...but still..could get my body lift with that coin... what you think?
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Old 07-16-2010, 10:23 AM   #28
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1310 size u-joints are fine for the driveshafts, that's (Spicer 5-785x) what I was running in my '97 TJ that saw a lot of very difficult trails.
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Old 07-16-2010, 11:34 AM   #29
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1310 size u-joints are fine for the driveshafts, that's (Spicer 5-785x) what I was running in my '97 TJ that saw a lot of very difficult trails.
thanks jerry! I figured that would be my best bet....already dropping 2k on the lift and the RE mono shocks. Gonna order another wheel for my spare too...now I can get the 1 inch body lift :P

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