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Thread: So what tire pressure do you run everyday city/highway and light trails?

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    Fresh Catch alkapin's Avatar
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    Question So what tire pressure do you run everyday city/highway and light trails?

    I have stock JLUR with 33' and have seen people run anywhere from 30 psi to 42 in the city and down to 10 on trails, with no bead locks. Personally, I find around 35 to be most comfortable in the city and 15 on rough forest roads with some light rock crawling. What is the lowest safe psi wihout the risk of a tire demounting?

  2. #2
    Resident Smartass OverlanderJL's Avatar
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    There is no magic number. Different conditions and different wheels would make a difference. Around 10-12 is usually safe though.


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    Meme King WJCO's Avatar
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    I've accidentally ran 10 on the trail with no issues. I used to keep it around 15psi, but now that I'm running Cooper stt pros, I just keep them at 20. The ground clearance increase may not even be measurable but I've found these tires to stick to rocks so well I just don't feel that I need to go any lower with these tires and 20 is still a comfortable ride.

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    Fresh Catch alkapin's Avatar
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    Quote Originally Posted by WJCO View Post
    I've accidentally ran 10 on the trail with no issues.
    Was it on stock 33" KO2?

  5. #5
    Meme King WJCO's Avatar
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    Quote Originally Posted by alkapin View Post
    Was it on stock 33" KO2?
    No. It was a 33" Cooper on a stock JK rim. I believe the JK and JL rims are the same width. But like Overlanderjl said, you still should be safe.

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    So what tire pressure do you run everyday city/highway and light trails?

    My 2019 JLUR had BFG muds LT255/75/R17 and the sticker on the door says the pressure should be 37 psi

    Iíve gone bigger with BFG K02 LT315/70/17 so what pressure should I use?

    Basically gone from 32Ē to 35Ē

    Iíve googled etc and find everyone is different....Iíve seen as low as 28 and as high as 45. Iím guessing 35 should be about right.

    Any views?


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  7. #7
    Meme King WJCO's Avatar
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    Quote Originally Posted by Patrick View Post
    My 2019 JLUR had BFG muds LT255/75/R17 and the sticker on the door says the pressure should be 37 psi

    Iíve gone bigger with BFG K02 LT315/70/17 so what pressure should I use?

    Basically gone from 32Ē to 35Ē

    Iíve googled etc and find everyone is different....Iíve seen as low as 28 and as high as 45. Iím guessing 35 should be about right.

    Any views?


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    Do a chalk test to ensure accuracy: https://jlwrangler.com/showthread.ph...ll=1#post15682

    I bet you'll find that 30 psi is just about right.

  8. #8
    Been Around the Block Rgk401's Avatar
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    Whatís a good psi for 37x12.5x17 nitto trail grapplers


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  9. #9
    Been Around the Block CanadaJeep's Avatar
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    Look one reply up WJCO put a link to a chalk test, this would be your best bet to find out what to run your tires at. I also added the link to the thread.
    https://jlwrangler.com/showthread.ph...ll=1#post15682
    I had 295 70r17 stt pro and did a chalk test and 30 psi was the magic number.
    Last edited by CanadaJeep; 05-13-2019 at 09:21 AM.
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  10. #10
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    If gas mileage on the Highway is important to you 35psi should do you well.

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