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Old 01-16-2013, 11:26 AM   #1
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a good tire and rim size for 35's

I have a 2012 jk sport 4dr putting in a 2.5' lift and want to get a set of 35's. I have 1.5 spacers on my truck now with 33's but am doing the lift and want 35's. do I leave the spacers on with the 35's what rim and tire size should I get ?? I ant to go as big as possible without having problems! Please help!! Lol

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Old 01-16-2013, 11:31 AM   #2
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I did Level 8's with 16x8.5" rims and Duratrac 315's. Great fit and look. Only rubbing is at full flex against the rubber fender. I also trimmed hte rubi rails and pinch point.

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Old 01-16-2013, 11:45 AM   #3
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I did Level 8's with 16x8.5" rims and Duratrac 315's. Great fit and look. Only rubbing is at full flex against the rubber fender. I also trimmed hte rubi rails and pinch point.

MJK

couldn't agree more! i have the level 8 ZX's with GY Duratrac 315/75 r16 meats on them. look great, perform well on and off road.
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Old 01-16-2013, 12:40 PM   #4
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I have a 2012 jk sport 4dr putting in a 2.5' lift and want to get a set of 35's. I have 1.5 spacers on my truck now with 33's but am doing the lift and want 35's. do I leave the spacers on with the 35's what rim and tire size should I get ?? I ant to go as big as possible without having problems! Please help!! Lol
A 2.5 foot lift. That's huge

I would suggest 17" wheels if wanting to get 37's later. You can keep the stock 17's and keep the wheel spacers if you want. There is more rubber available for 17's when stepping up. I have 16's and to get 37's, I need 325/80R16, which are few and far between.

Besides a beadlock, I would suggest a Soft 8 or D window steelie.

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Old 01-16-2013, 12:43 PM   #5
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Leaving on the spacers depends on the backspacing of the wheels you choose. If you need the extra clearance then run with the spacers.

I am running 17" American Outlaw Buckshots (5.6" backspacing) with 315/70/17 Duratracs and have no clearance or rubbing issues.
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Old 01-16-2013, 12:43 PM   #6
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I am with Dan. Also, if you go to a 17", it will give you room if you ever need to upgrade anything in or around the knuckle area. Last thing you want to do is have to buy new wheels and tires just because you need to upgrade something...

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Old 01-16-2013, 01:01 PM   #7
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I am running Pro Comp Xtreme MT's 315x70x17 on Pro Comp Wheels and so wish I had the 16", you may think that that 1" doesnt make much of a difference but it really does in how much side rubber you are getting from what ever chosen tire you pick. I have no plans of going to a 37" or bigger tire but can see why maybe you would want to go with the 17" for that reason. I can tell you though with these tires, a 4" lift and a PSI of around 50 I have no problem doing speeds of 80 to 100 MPH in my rig with no shake or shimmy and feel complete control.
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Old 01-16-2013, 01:05 PM   #8
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^ 50 psi is too high for your tires.
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Old 01-16-2013, 01:13 PM   #9
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actually 50 is the max rated and works great for me and a few others with same tire I run with, not to mention at the 50 PSI I am getting 17+ mpg avg even with the winter blend.
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Old 01-16-2013, 01:41 PM   #10
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actually 50 is the max rated and works great for me and a few others with same tire I run with, not to mention at the 50 PSI I am getting 17+ mpg avg even with the winter blend.
you might be crowning your tires with that much PSI. is the entire tire wearing evenly? if so, rock on, if not, you might want to air down a bit so the entire tire is contacting the road surface.

i think at 50 PSI i could tell you whether the dime i rolled over was heads or tails...
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Old 01-16-2013, 04:12 PM   #11
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full contact and even wear, actually just did a high dust trail last weekend and the clean spots on the tire from the highway home was spot on. I had a set of bias 33/12.5/16 LTB swampers on my FJ and ran them at max psi and still had a good 10k miles left in them after I had gone around 10k over what everyone thought and said the tires would get to. I am sure where you live and what not plays a huge role in what PSI you should run.
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Old 01-16-2013, 04:26 PM   #12
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Are you looking for direct suggestions or how to find some for yourself? There is a tire formula if you do not know it.

lets look at the stock tire size on a 2013 jku spot

255/75r17

to find the tire height, it just take some math.

Take the 255 and divide it by 25.4. The factor of 25.4 will always be constant, no matter the tire you are looking at.

so 255/25.4=10.039

this is your tire width. Not the tread width, but the total width of the tire.

now we take that tire width, and multiply it by .75, the second number in the tire size. 255/75

10.039x.75=15.059

and now divide that number by 2. 15.059/2=7.529

the 7.529 is the total amount of rubber in inches on each side of the tire.

so to get the total tire height, we take the rim size of 17" and add the total amount of rubber, 15.059" and get 32.059"

this will work for any tire. I would recommend putting it into an excel sheet so you can play around with multiple tire sizes and rim sizes that you find.

good luck in finding one you like
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Old 01-16-2013, 08:22 PM   #13
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Like others, I'm running 17x9 rims and 315s. So far I love it. Very, very solid feel. I just had to trim about an inch off the factory plastic front-end plastic guard.


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