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Old 06-11-2017, 08:16 PM
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Help a newbie understand spacers

I am planning on putting a 3.5-4.0 inch lift on my 15 JKU. I would like to run 35s on this when the lift is complete. I would like to use my factory wheels if possible, but I am not sure if i can after reading some threads that stated i would need spacers. So assume a 3.5 lift and 35s with factory wheels? Would it work or no? Also, if the answer is no, how do i know what size spacing i would need from the aftermarket rims that i order? Thanks in advance.

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Old 06-14-2017, 10:56 AM   #2
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Hi, Ty-

Tire size 315/70R-17 (35x12.50 metric equivalent) fits the factory 17x7.5 wheels, but the backspace/offset is too high which will cause the tires to rub suspension components. You can use 1.5-inch wheel spacers to push the assemblies outwards, however new wheels with proper backspacing/offset is considered the safer alternative (one less link in the chain that can fail so to speak).

If you decide new aftermarket wheels are best for you, a 17-inch wheel with 4.5-inches of backspace is most common. Here's the link to browse Discount Tire Directs 17-inch JK wheel selection. If you have any questions feel free to shoot us a PM, we're here to help

17-inch JK Wheel Options | Discount Tire Direct

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Old 06-14-2017, 11:04 AM   #3
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@Discount Tire you said it much better than I would have!!

Have a look here:
https://www.wranglerforum.com/f202/be...jk-298665.html

Look here for some info on backspacing and the largest tire on stock wheels:
https://www.wranglerforum.com/f27/lar...er-142837.html
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Old 06-14-2017, 11:17 AM   #4
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@tynorris2340 don't let me insult your intelligence. Spacers just "sit" on top of your coil springs and below the place where the spring would sit on the frame. It *is* possible for enough droop to cause the spacer to fall out. What @Discount Tire said about new wheels makes more sense and is safer than spacers.
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