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Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.

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Upgrading Tire Questions

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Old Apr 24, 2012 | 10:49 AM
  #1  
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Hey guys, I've been searching on here for awhile and haven't come up with a concrete answer, so here we go:

I have a stock 2012 Sport with 17" wheels (running 3.21 I'm assuming). I'm looking to upgrade to possibly 305/70R17 BFG KM2s (33.9" X12.2") or the duractracts 285/70/17 (32.8x 11.5), not set in stone tho.

My question is, can i fit either one of these with a 2"/1" leveling kit and 1.5" wheel spacers? I already blacked out the stock rims and i really like the look, so i'd like to keep them. Would I be able to run these without rubbing and having to cut fenders? I don't really beat it on the trail and do have a 30 mile commute everyday. Most the Jeep will probably see for now are Rausch greens (maybe some blues never been there. If i go with the 285's, can I get away with just the spacers?

Any input would be great, thanks guys!

Last edited by kh202; Apr 24, 2012 at 11:42 AM.
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Old Apr 24, 2012 | 10:52 AM
  #2  
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Originally Posted by kh202
Hey guys, I've been searching on here for awhile and haven't come up with a concrete answer, so here we go:

I have a stock 2012 Sport with 17" wheels (running 3.21 I'm assuming). I'm looking to upgrade to possibly 305/65R17 BFG KM2s (33.9" X12.2") or the duractracts 285/70/17 (32.8x 11.5), not set in stone tho.

My question is, can i fit either one of these with a 2"/1" leveling kit and 1.5" wheel spacers? I already blacked out the stock rims and i really like the look, so i'd like to keep them. Would I be able to run these without rubbing and having to cut fenders? I don't really beat it on the trail and do have a 30 mile commute everyday. Most the Jeep will probably see for now are Rausch greens (maybe some blues never been there. If i go with the 285's, can I get away with just the spacers?

Any input would be great, thanks guys!
I'm running 285/70/17 Maxxis Bighorns with nothing but 1" inch coil spacers on the front to level the ride. They will rub at full lock, but that's the only issue I've had with them in about 4000 miles.
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Old Apr 24, 2012 | 11:06 AM
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Originally Posted by rustyshackleford
x2 i ran km2 305/65/17 on stock setup. i rubbed the swaybar a bit at full lock. nothing serious.
No wheel spacers?
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Old Apr 24, 2012 | 11:30 AM
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Originally Posted by rustyshackleford

no. no spacers on stock rims. it will only run at full turn on the swaybar. and its the part of the sway bar in front of the tire that is rounded so wont damage your tire if hit.
Cool so you think of I ran the same set up it would take away the rubbing issues all together? Do you still have room to flex?

Thanks!
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Old Apr 24, 2012 | 11:46 AM
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I typed the size wrong the first time. The bigger km2s I was looking at were 305/70 not 65... So if ur that close they prob wouldn't fit
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Old Apr 24, 2012 | 12:41 PM
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Here's a pic of mine with the 1" front coil spacer and 285/70/17's.

Click image for larger version

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Old Apr 24, 2012 | 12:46 PM
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Originally Posted by Happybg81
Here's a pic of mine with the 1" front coil spacer and 285/70/17's.

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=308636"/>
Nice. How's yours with rubbing?
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Old Apr 24, 2012 | 12:51 PM
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Originally Posted by kh202

Nice. How's yours with rubbing?
Full lock only, no other issues.
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Old Apr 24, 2012 | 01:21 PM
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OP - you could always adjust where your "full lock" is if you're worried about it.
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Old Apr 24, 2012 | 08:48 PM
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Originally Posted by CF2010
OP - you could always adjust where your "full lock" is if you're worried about it.
How exactly is that done? I'm a Jeep newbie, but ive read this several times. Might need to do this before the wifey breaks something.
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