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Old 12-30-2016, 06:41 PM
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Questions - post-lift install and tires

Just picked up my JKU after having the Teraflex 2.5" lift and 35" tires installed. I have two questions:

1. What tire pressure should I run with 35x12.5R17's? Looks like they aired them up to 38 psi.

2. They didn't trim my stock Rubicon rock rails. Does anyone else have 35" tires with stock Rubicon rock rails that aren't trimmed? Any rubbing? Looks like if I flex aggressive, they will rub, but it is close.

Aside from that, the install looks awesome. I also got the Teraflex HD Hinged tire carrier. I love it!

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Old 12-30-2016, 08:03 PM   #2
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Originally Posted by LongRifle45 View Post
Just picked up my JKU after having the Teraflex 2.5" lift and 35" tires installed. I have two questions:

1. What tire pressure should I run with 35x12.5R17's? Looks like they aired them up to 38 psi.

2. They didn't trim my stock Rubicon rock rails. Does anyone else have 35" tires with stock Rubicon rock rails that aren't trimmed? Any rubbing? Looks like if I flex aggressive, they will rub, but it is close.

Aside from that, the install looks awesome. I also got the Teraflex HD Hinged tire carrier. I love it!
I have a two door Rubicon with the 2.5" Teraflex lift and 35x12.5x17 Nitto Trail Grapplers. I run between 28 and 30 psi. 38 psi is way to much and will ride very rough. Yes you do need to trim the rock rails. you can just remove the rear plastic cap and trim off about an inch of the rail. Then replace the end cap.

Jeep JK Wrangler Rubicon Rock Rails mod, trim, re-cap and install video!
http://www.youtube.com/watch?v=l6wE1M4MVhE

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Old 12-30-2016, 08:04 PM   #3
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On a JKU, try around 32ish. Or do a chalk test.

What year is your Jeep? Did your lift push the rear axle back?
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Old 12-30-2016, 08:14 PM   #4
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About 30psi should be good. I have my 35" Nitto Trail Grapplers at 30psi. You can cut off about 1" of the rear of the rail. Remove the plastic cap and take off a bit with a sawsall and reuse the plastic cap. Most people with the factory rails do it.
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Old 12-31-2016, 10:26 AM   #5
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Originally Posted by Unstuck 16 View Post
About 30psi should be good. I have my 35" Nitto Trail Grapplers at 30psi. You can cut off about 1" of the rear of the rail. Remove the plastic cap and take off a bit with a sawsall and reuse the plastic cap. Most people with the factory rails do it.

Second....I did the same
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Old 12-31-2016, 10:57 AM   #6
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Same lift and 35" BFG KM2s - 30-32 psi. The rock rails sure look like they would rub, but haven't yet in 9 months of wheelin. Probably will trim them someday though for looks.

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