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Old 09-14-2012, 12:38 PM   #1
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31x10.5 tires. What size wheels?

Hey guys,

I got some good info from you guys about a month ago so I am going to ask another question. I have the 4 banger so I am going with 31" tires (wish I could get 33).

My question is what size wheels? I was just about to order 15x8, 5x4.5 ( dont even know what this second part means)

Would 31x10.5 look beefy with 15x8?

I want that mean look where the tires hang out the side a couple inches.

Thanks guys!

~ Phil





PS does anyone know any cheap black wheels that look good? I was looking into the cragars but is there any other cheap ones like that?

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Old 09-14-2012, 12:45 PM   #2
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Hi phil yes their are cheaper rims. Go on the jegs web site. I picked mine up for about $45 a rim.

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Old 09-14-2012, 12:48 PM   #3
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My tires are 31x10.5 dakota definity m/t pep boys special . 154 each buy 3 get one free mail in rebate
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Old 09-14-2012, 12:48 PM   #4
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Hey thanks for the info John!! Now I just need to know what size to get
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Old 09-14-2012, 12:49 PM   #5
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Yes go 15x8. 5x4.5 is the bolt pattern which means five bolts spaced 4.5" apart. Don't even think about 15x10 wheels.

One thing to know... the further the front wheels protrude out to the side, the worse it is for steering. Instead of the tires pivoting in place when the steering wheel is turned when the wheels are properly positioned, the front tires are forced to swing through an arc instead when they are positioned further outside of the wheel well that can look like skateboard wheels.

Not to mention widely spaced wheels are harder to get through narrow tough offroad trails.

How far in or out of the wheel wells the wheels are positioned depends on how much backspacing (not offset!) they have. The less backspacing, the further out they protude. 4.5" to 5" of backspacing is optimal for a 31x10.50 tire. Reduced backspacing amounts like 3.75 to as little as 3.25" of backspacing will push the wheels out further. To me, 3.75" and especially 3.25" backspacing positions that size tire out too far.
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Old 09-14-2012, 12:49 PM   #6
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Nice those look great! DO you remember the size of the wheels?
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Old 09-14-2012, 12:50 PM   #7
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Yes go 15x8. 5x4.5 is the bolt pattern which means five bolts spaced 4.5" apart. Don't even think about 15x10 wheels.
Hahah thanks man! Ya I wasnt going to 15x10. On the cragar website there is like 15x8 and must be a few different bolt patterns I guess. Does it matter?
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Old 09-14-2012, 12:56 PM   #8
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Yes i used 15x8 4.5
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Old 09-14-2012, 12:59 PM   #9
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Hahah thanks man! Ya I wasnt going to 15x10. On the cragar website there is like 15x8 and must be a few different bolt patterns I guess. Does it matter?
Yes the bolt pattern matters and is in fact critical... the wheels must have a 5x4.5" bolt pattern to bolt onto your Jeep.
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Old 09-14-2012, 01:00 PM   #10
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15x7 would be a better fit for that size tire especially if you air down on the trails. Get the right backspacing if you want it to stick out. Not sure but maybe 3.75" BS. 5x4.5 is your wheel bolt pattern. 4.5 is the distance between the bolts.
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Old 09-14-2012, 01:06 PM   #11
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I agree with Wattapunk that a 15x7 wheel is a more appropriate size wheel for a 31x10.50 tire. If the OP has no plans to go with a bigger tire size, I'd go for a 15x7 wheel which will help the tire stay seated more easily when/if the tires are aired down for offroad purposes. I went along with the 15x8 because so many Jeepers end up with bigger tires later.
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Old 09-14-2012, 01:12 PM   #12
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Good info guys thanks!!

Now what are some good deals/websites to buy some black wheels?? Got any in mind?
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Old 09-14-2012, 01:43 PM   #13
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Jegs has thier own brand d-window and soft 8's. $45 each
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Old 09-15-2013, 12:16 PM   #14
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Originally Posted by Jerry Bransford View Post
Yes go 15x8. 5x4.5 is the bolt pattern which means five bolts spaced 4.5" apart. Don't even think about 15x10 wheels.

One thing to know... the further the front wheels protrude out to the side, the worse it is for steering. Instead of the tires pivoting in place when the steering wheel is turned when the wheels are properly positioned, the front tires are forced to swing through an arc instead when they are positioned further outside of the wheel well that can look like skateboard wheels.

Not to mention widely spaced wheels are harder to get through narrow tough offroad trails.

How far in or out of the wheel wells the wheels are positioned depends on how much backspacing (not offset!) they have. The less backspacing, the further out they protude. 4.5" to 5" of backspacing is optimal for a 31x10.50 tire. Reduced backspacing amounts like 3.75 to as little as 3.25" of backspacing will push the wheels out further. To me, 3.75" and especially 3.25" backspacing positions that size tire out too far.
Can you tell me what wheel manufacturer has 15x8 with 4.5 to 5" BS? I bought some 15x8 factory Ravines to use 31x10.5s on my TJ Rubi, but the BS is 5.5", which according to someone on the forum will cause rubbing. 5" should be perfect.
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Old 09-15-2013, 12:33 PM   #15
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Not that I recommend steel wheels but ProComp's 15x8 steel wheels sold by 4Wheel Parts stores should have 4.5" of backspacing.

But any rubbing you might get with 5.5" of backspacing and 31x10.50 tires should be minor and easily fixable by adjusting the steering bolt stop. And that kind of rubbing only happens when the steering wheel is turned all the way left or right to the bolt stops. A washer or two per the instructions at http://www.4x4xplor.com/steerstop.html is all you'd need & it only takes 5 minutes and a wrench.
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Old 09-15-2013, 12:42 PM   #16
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Not that I recommend steel wheels but ProComp's 15x8 steel wheels sold by 4Wheel Parts stores should have 4.5" of backspacing.
Hey, thanks for getting back to me. I take it, you don't know of any alloys. What about using .5" spacers with the Ravines - the thin alum plate type that slip over the wheel studs or would that require .5" longer studs?
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Old 09-15-2013, 12:45 PM   #17
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Whoops sorry I was thinking you were asking about steel wheels and I see now you weren't. Regardless of them being steel or alloy, all you need is that washer or two to run that size tire with that amount of backspacing. Personally, I'm no fan of spacers.

The increase in turning radius caused by the extra washer is so small as to be unnoticeable when making sharp turns.
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Old 09-15-2013, 02:37 PM   #18
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How far in or out of the wheel wells the wheels are positioned depends on how much backspacing (not offset!) they have. The less backspacing, the further out they protude. 4.5" to 5" of backspacing is optimal for a 31x10.50 tire. Reduced backspacing amounts like 3.75 to as little as 3.25" of backspacing will push the wheels out further. To me, 3.75" and especially 3.25" backspacing positions that size tire out too far.
Jerry, this whole BS issue gives me a headache. I have an LJ with a 2" BB, 1.25"BL and 1"MML. I want to run 32x11.5x15 Cooper STTs. What would you recommend as ideal BS for this size tire?
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Old 09-15-2013, 02:51 PM   #19
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Ideal backspacing for a 32x11.50 is probably 4.75" which I have never actually seen on a 15x8 Jeep wheel. 4.5" is pretty commonly available for 15x8 steel wheels but 3.75" is more common with 15x8 alloy wheels. The tires will protrude more with 3.75" than they would with 4.5" of backspacing.
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Old 09-15-2013, 02:56 PM   #20
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Whoops sorry I was thinking you were asking about steel wheels and I see now you weren't. Regardless of them being steel or alloy, all you need is that washer or two to run that size tire with that amount of backspacing. Personally, I'm no fan of spacers.

The increase in turning radius caused by the extra washer is so small as to be unnoticeable when making sharp turns.
What washer are you talking about?
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Old 09-15-2013, 02:58 PM   #21
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Quote:
Originally Posted by Jerry Bransford View Post
A washer or two per the instructions at Jeep Steer Stop Adjustment is all you'd need & it only takes 5 minutes and a wrench.
Quote:
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What washer are you talking about?
Click link Jerry posted for instructions and photos of project.


PS. to the user asking about BS...if you want alloy wheels the company "blackrock" wheels has a few 15x8 wheels with 4'' bs.
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Old 09-15-2013, 03:10 PM   #22
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Click link Jerry posted for instructions and photos of project.


PS. to the user asking about BS...if you want alloy wheels the company "blackrock" wheels has a few 15x8 wheels with 4'' bs.
Thanks for the link on the washers. I need 15x8 with 5" BS, 4" would stick out from under the fenders, but thanks anyway.
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Old 09-15-2013, 03:29 PM   #23
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Not that I recommend steel wheels but ProComp's 15x8 steel wheels sold by 4Wheel Parts stores should have 4.5" of backspacing.

But any rubbing you might get with 5.5" of backspacing and 31x10.50 tires should be minor and easily fixable by adjusting the steering bolt stop. And that kind of rubbing only happens when the steering wheel is turned all the way left or right to the bolt stops. A washer or two per the instructions at Jeep Steer Stop Adjustment is all you'd need & it only takes 5 minutes and a wrench.
I didn't see this earlier - thanks for an easy fix for only pennies instead of $100s for new wheels!
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Old 03-22-2014, 03:49 PM   #24
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Body cladding

Hey guys

What is the plastic on the sides of an xj jeep cherokee? I can't find any replace ment for them cause they are all warped and lost there color
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Old 03-22-2014, 04:00 PM   #25
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FWIW I ran 31" x 10.50"s on Ravens on my TJ for several years (3 sets of BFG A/Ts) and had no issue with rubbing...here is a Pic
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Old 03-22-2014, 04:09 PM   #26
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Hey guys

What is the plastic on the sides of an xj jeep cherokee? I can't find any replace ment for them cause they are all warped and lost there color
It's unlikely you'll find many guys in Wrangler Forum with an XJ Cherokee. Try XJ Cherokee Technical Forum - JeepForum.com that specializes in XJs.
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Old 03-22-2014, 09:11 PM   #27
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Ran fine on my stocky 15x8 Canyons. Just adjusted the steering stops as others have already recommended.

I still run 33x10.5x15 on my stock Canyons... tho with a 3.5" lift.

Either size look and work great....
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Old 03-24-2014, 09:24 PM   #28
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It's unlikely you'll find many guys in Wrangler Forum with an XJ Cherokee. Try XJ Cherokee Technical Forum - JeepForum.com that specializes in XJs.
Hey man thanks so much!!, I'm new to all this thanks

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