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Old 03-22-2013, 07:00 PM   #1
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What wheels to run?!

I just bought a set of 33 Toyo open country MTs off of craigs. Now I need to know what rims to run.

The tires are 33 12.5 r15

I have no clue what offset I should run. I am looking at these right now.

15x8 19 Vision Soft 8 Black Steel Wheels Rims 5x4 5 Jeep Wrangler TJ YJ | eBay

any suggestions? Thanks.

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Old 03-22-2013, 08:15 PM   #2
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I am running 33x10.5xr15 on my tj and I have more than enough room. I was told on the thread I posted that 4 backspacing is good for running 10.5 and 12.5.

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Old 03-22-2013, 08:30 PM   #3
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I'd get the procomp series 97 or 98, with 3.75 backspacing from quadratec, or see if your local shop has them. They are a dime a dozen and it's the same shit, different chinese distributor.
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Old 03-22-2013, 08:47 PM   #4
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One wheel for $250? The wording on that posting is deceptive.

I'd get the procomp series 97 or 98, with 3.75 backspacing from quadratec, or see if your local shop has them. They are a dime a dozen and it's the same shit, different chinese distributor.
Its 250 for a set of 4 wheels. How do I know what back spacing the wheel has? These just say offset is neg 19
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Old 03-22-2013, 08:53 PM   #5
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Its 250 for a set of 4 wheels. How do I know what back spacing the wheel has? These just say offset is neg 19
I guess you could convert from metric. or google procomp series 98..
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Old 03-22-2013, 08:55 PM   #6
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I guess you could convert from metric. or google procomp series 98..
Simply converting the measurement of offset won't directly give you the backspace. Offset and back space are two different things.
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Old 03-22-2013, 09:04 PM   #7
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Simply converting the measurement of offset won't directly give you the backspace. Offset and back space are two different things.
Gosh damnit, you gonna make me calculate that foreign language...
That's why I sent him to an american institute like quadratec.
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Old 03-22-2013, 09:06 PM   #8
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So what is the difference between offset and back space in regards to rims?
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Old 03-22-2013, 09:16 PM   #9
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So what is the difference between offset and back space in regards to rims?
The wheel offset is the difference between the mounting surface at the brake side of the rim compared inside to outside. -19 means the wheel is has more out, than on the inside.

Bump steer comes into play when the mounting surface strays from center of the rim.




Back space is needed to clear the tie rod ends and other components.
Jeep wheel usually sell with two different back spacings, 3.75 and 4.5

To get tie rod clearance the 3.75 with an 8" rim is the best bet.
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Old 03-22-2013, 09:21 PM   #10
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Old 03-22-2013, 09:22 PM   #11
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Originally Posted by Full Spool View Post
The wheel offset is the difference between the mounting surface at the brake side of the rim compared inside to outside. -19 means the wheel is has more out, than on the inside.

Bump steer comes into play when the mounting surface strays from center of the rim.




Back space is needed to clear the tie rod ends and other components.
Jeep wheel usually sell with two different back spacings, 3.75 and 4.5

To get tie rod clearance the 3.75 with an 8" rim is the best bet.
I went with 4" back space. Plenty of clearance for 12.50's
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Old 03-22-2013, 09:27 PM   #12
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I went with 4" back space. Plenty of clearance for 12.50's
It's kinda funny when people buy rims with 4.5" backspace, then buy wheel spacers.
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Old 03-22-2013, 09:34 PM   #13
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I used to run the exact same Toyo's. 33x12.5x15. They are a very heavy tire. I had them on cheapo black steelies. 15x8 with 3.75 backspacing. When I went to 35's, I put them on alloy wheels. Lighter, and stay balanced better. I would suggest going alloy wheels.



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Old 03-22-2013, 09:46 PM   #14
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So then will the 3.75 back spacing work with the Toyo Open country mts that I mentioned?
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Old 03-22-2013, 09:48 PM   #15
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And also the -19 offset? Is this what I should run? Or is there a better offset?
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Old 03-22-2013, 09:49 PM   #16
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It's kinda funny when people buy rims with 4.5" backspace, then buy wheel spacers.
Why would someone buy new wheels that didn't have the back space they wanted?
I ran 1.25" spacers on my stock Canyons @5.5" back space, so the 4" back space wheels gave me 1/4" less back space than that setup.
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Old 03-22-2013, 09:50 PM   #17
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And also the -19 offset? Is this what I should run? Or is there a better offset?
That's fine. That should be the offset for an 8" wide wheel with 3.75" back space.
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Old 03-22-2013, 09:55 PM   #18
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And also the -19 offset? Is this what I should run? Or is there a better offset?
Offset is gonna change between a 8" rim and a 10" rim, if the back spacing is to stay at 3.75"

-19mm = -.75 inches

so it's saying the mounting surface is .75 off center on an 8" wheel, which equates to about 3.75' of back spacing if you calculate in the thickness of the wheel.
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Old 03-22-2013, 09:55 PM   #19
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That's fine. That should be the offset for an 8" wide wheel with 3.75" back space.

Cool. I will be ordering up the set I was looking at. Thanks.
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Old 03-22-2013, 09:58 PM   #20
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Offset is gonna change between a 8" rim and a 10" rim, if the back spacing is to stay at 3.75"
Exactly, which is why for our application, offset isn't generally a concern. Pick your wheel width, and pick your back space.
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Old 03-22-2013, 10:06 PM   #21
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What about 8" vs 10" wide rim for 33 x 12.50 x 15 tires
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Old 03-22-2013, 10:07 PM   #22
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Ok so $62.00 wheel delivered, not bad... Even better if no sales tax. I've seen some black wheels @ $55.00/Wheel, but then there's tax, shipping, or both. There's basic black steel wheels used/sold in the racing industry that are reasonable in price in many off-sets. Not sure exactly which offsets "they" offer? Likely offsets in increments of 1/2 "& 1".
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Old 03-22-2013, 10:07 PM   #23
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Why would someone buy new wheels that didn't have the back space they wanted?
They didn't investigate before they bought? Or maybe they upgraded to curry steering and it didn't have the clearance.

Anyway, it's good discussion.
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Old 03-22-2013, 10:10 PM   #24
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Exactly, which is why for our application, offset isn't generally a concern. Pick your wheel width, and pick your back space.
Unless you buy a 12" wide rim with 3.75 backspacing. Then a heavy duty steering damper would be on the menu.
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Old 03-22-2013, 10:17 PM   #25
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Unless you buy a 12" wide rim with 3.75 backspacing. Then a heavy duty steering damper would be on the menu.
As far as the wheels themselves go.............................................
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Old 03-22-2013, 10:22 PM   #26
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Why would someone buy new wheels that didn't have the back space they wanted?
I ran 1.25" spacers on my stock Canyons @5.5" back space, so the 4" back space wheels gave me 1/4" less back space than that setup.
But what size tires originally came on those rims. You move up to 33' or 35' on those wheels and you would have to set the steering stops to where you need a parking lot to turn a circle.
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Old 03-22-2013, 10:25 PM   #27
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But what size tires originally came on those rims. You move up to 33' or 35' on those wheels and you would have to set the steering stops to where you need a parking lot to turn a circle.
The Canyons?
12.50's on 5.5 BS with 1.25 spacers would clear just fine I'd think. That's only 1/2" more back space than your 3.75 BS
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Old 03-22-2013, 10:36 PM   #28
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My last point then it's back to watching this stupid zombie movie.

Keeping the offset closer to 0 is going to keep the ball joints closer to wheel center which will reduce steering component fatigue. 10" wheels on 12 inch tires makes the wheels more prone to damage from rocks.
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Old 03-22-2013, 10:37 PM   #29
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The Canyons?
12.50's on 5.5 BS with 1.25 spacers would clear just fine I'd think. That's only 1/2" more back space than your 3.75 BS
I'm just saying the spacers weren't a factory option.
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Old 03-22-2013, 11:12 PM   #30
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I'm just saying the spacers weren't a factory option.
Oh, OK. Go watch your movie..

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