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Old 05-24-2013, 07:32 PM   #1
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will 34" tires work on factory suspension

I have a 2012 4dr unlimited sport and would like to know if putting LT305/17 (34") tires on stock suspension would hurt my factory ride or what changes I might need to make. I plan on putting after market wheels on as well, the ones I plan on getting have 4.75" backspacing?

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Old 05-24-2013, 07:47 PM   #2
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Originally Posted by Brandon03 View Post
I have a 2012 4dr unlimited sport and would like to know if putting LT305/17 (34") tires on stock suspension would hurt my factory ride or what changes I might need to make. I plan on putting after market wheels on as well, the ones I plan on getting have 4.75" backspacing?
Might be a bit tight with stock fenders. 33" will work for sure. 34 and 35 will work with flat fenders.

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Old 05-24-2013, 08:05 PM   #3
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Thanks, but will it just rub offroad and how will it mess with my suspension and ride. I'm hesitant on what I should do because I love the factory ride?
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Old 05-24-2013, 09:05 PM   #4
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Here's a thread on tire size for the stock suspension that answers your questions: Largest tire on stock JK? Here's your answer!

Also, there's really nothing magic about the stock ride. What makes a ride "better" is subjective, but in general you should expect a quality lift kit that replaces the stock coil springs paired with a nice set of shocks would improve the ride.
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Old 05-24-2013, 10:51 PM   #5
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Bigger, heavier tires will make your suspension work a bit harder dealing with the extra mass. But, the taller sidewalls of a bigger tire will soak up some of the bumps... if you don't inflate them like balloons.

It won't affect your suspension in the way that a lift kit or spacers would...
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Old 05-25-2013, 10:44 AM   #6
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How would 2" spacers and the 34" tires affect my suspenion and ride? Also with 17" stock rims could I downsize to a 16" aftermarkert wheel to get less backspacing, would that help?
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Old 05-25-2013, 11:28 AM   #7
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How would 2" spacers and the 34" tires affect my suspenion and ride? Also with 17" stock rims could I downsize to a 16" aftermarkert wheel to get less backspacing, would that help?
Spacers retain the factory ride quality. You'd only notice the added weight of the wheels

And yes you can go with 16" aftermarkets. Generally you want 4.75" of back spacing or less

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