Backspacing on stock 18" rims with 275/70R?? - JeepForum.com

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post #1 of 17 Old 09-21-2010, 06:19 AM Thread Starter
diveguy
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Backspacing on stock 18" rims with 275/70R??

Anyone know the backspacing I need so I will not have any rubbing at full turn on my sway bar? I'm running 275/70R18 BFG A/T KOs on my stock 18" Sahara rims. I really dig the rims so I kept em but when I turn (and I mean FULL turn) the nubs rub on the sway bar. I'm getting the Skyjacker 2" BB but I don't think that'll jack it up enough to get rid of the rub. Will 1.5" be enough or do I need bigger? And yes, I would love to spend some money on some steel 15 or 16s but I don't have the funds right now to buy rims AND new tires...but in my dreams they'd look just like the Rocky Mountain edition rims...

Thanks for your help!


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275/70R18 (33.2 x 10.5) BFG AT/KO
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post #2 of 17 Old 09-21-2010, 06:23 AM
g4x4xgeoff
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Throw on a set of wheel spacers, you can keep your rim!

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post #3 of 17 Old 09-21-2010, 06:51 AM
thedirtman
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7" is the backspacing. I bought 16" rims and tires for the same price as a set of 18" tires. 18" tires are limited in what you can get and are expensive.
Tom
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post #4 of 17 Old 09-21-2010, 10:40 AM Thread Starter
diveguy
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My apologies...I already have the 275/70R18s on the stock rims and they rub...I meant to phrase the inquiry as what width wheel spacers do I need? Dirtman...I am assuming since you got 7" of back spacing with your 16" rims that I would need at least 2" wheel spacers. Is this correct?

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post #5 of 17 Old 09-21-2010, 12:02 PM
JLC08JK
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The stock 18" wheels have 6" of back space!
You need to use either 1 1/4" or 1 1/2" spacers to get the clearance needed.
Refer to the F.A.Q. "Will It Rub" and "More About Tires / Wheels" for basic guidelines.

Jim

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post #6 of 17 Old 09-21-2010, 12:05 PM
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way off topic jlc, but in your avatar that's an interesting hood ornament!
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post #7 of 17 Old 09-21-2010, 12:26 PM Thread Starter
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way off topic jlc, but in your avatar that's an interesting hood ornament!
Hahaha...everyone could use some tea! Thanks JLC...that's exactly what I'm looking for...

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post #8 of 17 Old 09-21-2010, 02:55 PM
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Just adjust the steering stops and you won't rub. Free mod.

Safety fast,
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post #9 of 17 Old 09-21-2010, 04:25 PM
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Eh, I like the turning radius too much...haha

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post #10 of 17 Old 09-21-2010, 05:31 PM
thedirtman
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I would think 1.5" would be enough. My new rims have a 4.5" backspace and I now have about 2" of clearance to my sway bar.
Tom
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post #11 of 17 Old 09-21-2010, 05:32 PM
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4.5" backspace 285/75R16 at full turn
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post #12 of 17 Old 09-21-2010, 06:07 PM
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Eh, I like the turning radius too much...haha
Safer and smarter than spacers.

Wheels with proper backspacing really are the answer. All of the stock wheels have ill-suited backspacing from the factory and the 18s were just a bad idea overall.
I didn't even know that mine came with 18s until I got home; I just assumed they were 17s....

Safety fast,
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post #13 of 17 Old 09-21-2010, 06:27 PM Thread Starter
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Originally Posted by Hilldweller View Post
Just adjust the steering stops and you won't rub. Free mod.
Okay. Sold. So how do we go about adjusting the steering stops? Forgive me...not sure how that's done.

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post #14 of 17 Old 09-22-2010, 04:50 AM
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Okay. Sold. So how do we go about adjusting the steering stops? Forgive me...not sure how that's done.
Clicky this linky

Safety fast,
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Security is mostly a superstition. It does not exist in nature, nor do the children of men as a whole experience it. Avoiding danger is no safer in the long run than outright exposure. Life is either a daring adventure, or nothing.- Helen Keller
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post #15 of 17 Old 09-22-2010, 06:17 AM Thread Starter
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Clicky this linky
Thanks Hilldweller...always appreciated...

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