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Old 11-15-2015, 08:28 AM
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Wheels and tires help!

I'm a mostly on road driver, with some weekend off roaring... I drive a 2015 JKU auto, 3.21 gears currently but will be regearing eventually...

I was thinking 17x9 for the longest time, but someone mentioned 15x10 in a post and made good points... I just want to make sure I order the right thing the first time...

I wanna get the black rock type 8, and I'm back and forth with 3.5" or 4.5" backspace...

If anyone could just point me in the right direction and post some pics of similar wheel and tire combos I'm interested in it would be appreciated! Thanks!

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Old 11-15-2015, 10:53 AM   #2
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I have 33x12.5x15 GY Duratracs on Ion 171s 15x10 rims. they are difficult to keep balanced, even with Hunter road force balancing. Before you decide to go with 15s, make sure you don't want to do a big brake kit. there is 1/4" of room between the brake caliper and the rim now. Wheel weights all also have to be either the older type (hammer on) or they (stick ons) will have to be moved inboard of the caliper to not to interfere. Weight savings are the only reason to go to 15s. HUGE difference in 15 vs. 17, 18,20 + My 2 cents.

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Old 11-15-2015, 11:02 AM   #3
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For a 33", or 35" tire, I would go with a 17x8.5, or a 17x9" wheel. Keep you Back Spacing between 4.5 to 5.0 and it will work just fine, plus look good.

A BS of 3.5, will be extremely hard on your Ball joints and wheel hub bearings.
As for the 15" wheels on a JKU, they just look out of proportion..IMO

And yes, you will probably need to re-gear, for the larger tires.

You will get all kinds of different opinions to your question!!!
Just remember, its a choice, your choice..
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Old 11-15-2015, 12:06 PM   #4
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I have an issue with one of my tires Wrangler On the back tire I bulge or bubble right on the tread not on the side. Any reason???? I know I need to replace the tire.
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Old 11-16-2015, 12:03 AM
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Yeah haha I figured there would be different opinions just wanted to hear the other side of the coin lol... I was thinking 17x9's to begin with and may go that route in case I do decide to do the brakes in the future... Plus I also liked the look of them too... Just gotta find a nice wheel + tire package ! Thanks for all the quick replies
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Old 11-16-2015, 12:06 AM
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Is that tpmis sensor or whatever necessary also while were on the subject? It just tells you when the tire is flat right? I have a weird habit of always checking my tires anyways... Don't think I need a 200$ reminder
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Old 11-16-2015, 12:55 PM   #7
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This is just my opinion and not meant to offend anyone, so here it goes. You have a 2015 Jeep JK, not a 1975 CJ so don't mount tiny wheels on it. They just look odd on a late model vehicle because about the only thing you purchase new in 2015 with 15 inch wheels is a utility trailer. I'd stick with 17 to 20 inch wheels. Now from a functional standpoint, 15's won't clear the brakes without a really shallow backspacing which will cause fitment issues. Also, I'd be surprised if many 15 inch wheels are compatible with TPMS.
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Old 11-18-2015, 11:21 AM   #8
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I just put 285/70/17s on my 2015 4 door Sahara U. Backspace is 4.75 and offset is 0. They look and ride great, but I have a slight rub of the air dam on full turn. I'm installing a Daystar .75" leveling kit. If the rub is still there, I will trim the air dam.

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