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Old 09-19-2010, 07:50 PM   #31
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It I was you, I'd order 15x8s with 4" b.s. just so that it will accommodate 33x12.50's later when you decide 31x10.5 isn't big enough.

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Old 09-19-2010, 07:51 PM   #32
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Quote:
Originally Posted by mattyd View Post
This is just what I was hoping to find...some folks who knew a whole lot more about this than I do!!!

Here is my question...I want to get new wheels for my '06 TJ since it is tire time also.

I plan to run 31" x 10.5" x 15" tires. What wheel configuration should I order in offset and backspacing?

Thanks.
You can fit 31x10.5's on a stock TJ wheel. Offset is not really a factor, bs 5" or less will be fine. The less bs, the farther out it pushes the wheel.

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Old 09-24-2010, 11:03 PM   #33
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I'm new to this forum and haven't found the answer to a question I have. I have a 97 Wrangler with a 4" lift, 33 x 12.5 Super Swampers with a 4 cyl. It's dog slow on the road! I bought the Jeep this way and it was intended to be used as a hunting vehicle to get into the back woods down two tracks. Now I need this more as a primary source of transportation. I intend to go to stock rims and 31 x 10.5-15 all terrain tires. Can anyone offer any advise on how this will perform on the highway, as far as acceleration and crusing speed? I don't want to go too small on the tires because of the lift.
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Old 09-24-2010, 11:15 PM   #34
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Your performance will improve with smaller tires.

And welcome to the forum
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Old 12-12-2010, 10:15 AM   #35
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im runnin the m/t mtz 1250x33 on my 89 yj with spring over conversion it originally had worn out 1550 superswampers on it when i bought it tires were $875.00 and worth every cent great road tires and great 4 wheelin tires hope this helps
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Old 12-13-2010, 09:20 PM   #36
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wheel offset

still not clear on offset and backspace , I have a 2010 unlimited looking to buy mb wheels chaos 5 16x8 with -6 offset and put either yokohama geolander 245/70/16 or bf goodrich lt t/a 235/75/16 are either tires good for this wheel and will this put any extra wear on bearings , I have no idea how fat this will come out towards fenders
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Old 12-13-2010, 10:53 PM   #37
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Mick, -6 offset means the mounting surface is 6mm outside of center (pretty sure it's outside, it's late... ) So just call it 1/4". Anyway, center is 4" so it would be 4.25" bs... if I'm thinking clearly. Your stockers likely have 6-6.25" bs, so it will move your tires out about 2". You know you can go taller with your tires, right? You can go up to a 255 or probably even a 265 or 275. They will fill out the wheel well a bit better. 1010TIRES.COM® — Tires and Wheels Absolute Authority. has a great conversion chart to show you metric to english conversions. A JK stock can fit a 32" tire with no problem.
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Old 12-14-2010, 08:19 AM   #38
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thanks for the info , I dont do any offroad so I dont really need big tires just wanted to help the looks, but I was told any thing bigger than a 235 or 245 would be bad for the bearings
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Old 12-14-2010, 08:26 AM   #39
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thanks for the info , I dont do any offroad so I dont really need big tires just wanted to help the looks, but I was told any thing bigger than a 235 or 245 would be bad for the bearings
Well considering that stock Rubicons come with 255's I don't think that size is going to do any damage, it's the offset on the wheels that can potentially cause damage. Moving them out of their stock location puts additional stress on the bearings.
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Old 02-02-2011, 09:54 AM   #40
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Useful info. But what about the offset? I have heard many people talking about "negative" offset, when talking about rims? Isn't it somehow opposite to the backspace?
Sorry if this is a dumb question.
Here's where I found out what all of these terms meant when I was looking at wheels. Wheel Tech - Offset
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Old 02-16-2011, 07:43 PM   #41
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ok im getting soft 8's. jegs carries 2 diff 15X8's. one has a BS of 4" and the other has a BS of 4.75". Im running 30X9.50 tires. so which BS do you guys recommend??

Thanks in advance...
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Old 02-23-2011, 10:50 AM   #42
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So if a man was going to put a 3.25 lift on an LJ. And that same man was going to put 33x12.5x15 tires on said LJ, he would get wheels with 5" of backspace to make it stay under the stock flares?
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Old 02-23-2011, 01:22 PM   #43
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Quote:
Originally Posted by Phrankoff
So if a man was going to put a 3.25 lift on an LJ. And that same man was going to put 33x12.5x15 tires on said LJ, he would get wheels with 5" of backspace to make it stay under the stock flares?
Well, except that that bs is going to put you very close to the rear spring perches.. But each tire is different, and the perches may be different on an lj but I don't think so... Someone will come along and tell you differently probably
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Old 02-27-2011, 10:54 PM   #44
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Got 33x12.5 15 in the garage. need to buy wheels that make them fit under a 2.5 inch lift on a rubicon and will also allow me to go to 35x12.5 15 later without buying new rims. Cragar soft 8 4.5 BS will these work?
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Old 03-02-2011, 06:28 PM   #45
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Question Tire Fit

I have an 05 wrangler unlimited with the stock alloy wheels and am putting a 4" lift on it. my question is will 33x12.50 by 15" tires fit without rubbing or will need wheel spacers? any help appreiated.
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Old 03-12-2011, 04:40 PM   #46
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I am looking at getting Mamba M5 wheels and i have two choices. They come 15x9 with 3.88 bs and -10mm offset or 15x9 with 5.00 bs and +12.00 offset. I am wrapping them with 33x12.50x15 duratracs or falken rocky mountains. Can any one tell me which wheel i should be purchasing.
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Old 03-12-2011, 07:13 PM   #47
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The first one. The second will not fit with a 12.5" wide tire.
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Old 03-12-2011, 07:58 PM   #48
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Thank you Inferno.....
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Old 03-15-2011, 01:21 PM   #49
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I currently have 33x10.5 BFG AT TA's on 15x8 rims ( stock Wrangler Sport rims ) on a 2004 TJ with a 3.25 susp lift. Only rubs on control arms when in 4wd on a real sharp/hard turn. The thing that's bugging me is that a full 2 inches of tire ( 1 inch on inside and 1 inch on outside ) does not come in contact the road. I was warned this would happen due the the "ballooning" effect unless I switched out with wider rims. So far from the above comments it almost sounds like I already have the correct setup. Any suggestions.
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Old 05-10-2011, 11:52 AM   #50
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What is ya'lls opinion on the BFG's KM2 for highway use over long distances? Would it wear too much?? Thinkin bout gettin the 33x10.5r15...maybe upgradin to R16.
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Old 05-10-2011, 12:36 PM   #51
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Originally Posted by JEEPIN_DOG View Post
I currently have 33x10.5 BFG AT TA's on 15x8 rims ( stock Wrangler Sport rims ) on a 2004 TJ with a 3.25 susp lift. Only rubs on control arms when in 4wd on a real sharp/hard turn. The thing that's bugging me is that a full 2 inches of tire ( 1 inch on inside and 1 inch on outside ) does not come in contact the road. I was warned this would happen due the the "ballooning" effect unless I switched out with wider rims. So far from the above comments it almost sounds like I already have the correct setup. Any suggestions.
You wouldn't want a 10.5" tire on a 10" wheel..... Try letting a little air out, they shouldn't be ballooning that much with a 10.5" tire.... JMO of course.
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Old 06-21-2011, 07:54 PM   #52
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Hey guys new to the site and my tj currently has stock wheels and 31x10.50 bfg at and they currently rub on the control arms at full lock. I'm thinkin about getting a set of dick cepek dc II 15x8 with a -21mm offset and I was wondering if these would stick out past the factory fender flares or be even with them.
Thanks for the help
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Old 07-11-2011, 12:48 PM   #53
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Jeep Newbie

Hey guys, Im new to the forum and to Jeep Modding. I have been working on VW's and Audis up until now, but I thought I would give some off-roading shot with my Jeep. I have a completely stock 2008 Wrangler Rubicon Unlimited and it is due for some new tires. I was looking at going with the black rock 16" steels and putting 285/75R/16R Wrangler Duratrac or M/T's on there. What kind of spacing should I get? 4 1/4 or 5? Or if you guys have some other suggestions feel free to throw em out there, Im used to going fast and low so Im a bit out of my element.
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Old 08-14-2011, 01:40 AM   #54
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Have you looked at Wild Country XTXs (they're actually made by Cooper) come various sizes, still looks mildly aggressive for an A/T, good siping for wet/snowy weather. 45,000 to 50,000 milage. good price range.
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Old 08-14-2011, 01:46 AM   #55
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@ Rgirten I'e been looking at those too. I think about 1/4 perhaps a little more of the tire tread will stick out past the fenders. just go to bing search eng type in: dick cepek DC2 jeep wranglers. and select images, you'll get lots of pics with discriptions showing what that wheel looks like with different tires
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Old 09-24-2011, 05:09 PM   #56
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5x4.5 doesnt fit on my tj!!!

I ordered a spare wheel with a 5x4.5 bolt pattern and it didnt fit. how do i measure a bolt pattern? cause i really dont want to buy another one and have it not fit because i cant return it now.
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Old 09-25-2011, 11:45 AM   #57
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Backspace

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Originally Posted by InfernoGirl View Post
You need 4.5" backspacing or less for a TJ with 11.5's
will 4.5 work for a 12.5's or will wheel spacers be needed? 2011 Rubicon, 2.5" susp. lift
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Old 10-02-2011, 10:32 PM   #58
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Backspace Check

ok
stock wheels are 15x7 5.25"BS

If I use 15x8 4.75" BS

Same size tires 31x 10.5x 15

the tires will stick out 1.5"?
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Old 10-03-2011, 08:37 AM   #59
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You may want to look at this link. Pretty comprehensive and has some methods for determining the impact of changing offset, backspace and tire size.
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Old 10-04-2011, 01:49 PM   #60
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fit?

i was told that 33x12.5x15 tires wont fit on stock jeep ravine rims,is this true and if not would they rub anywhere?i'm going with a 4 or 4.5'' lift.if it is true what size rims do i need,please add all info,backspacing,offset ect.thank u.

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