How much PSI are you running in your tires?

Discussion in 'Ask An Owner Operator' started by John Bertucci, Sep 16, 2020.

  1. John Bertucci

    John Bertucci Light Load Member

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    There’s a formula for under inflated tires and fmcsa uses it to determine a violation, I can’t remember where I found it but 75psi was bare minimum and possibly too low for a light trailer.
     
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  3. Tug Toy

    Tug Toy Road Train Member

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    I run 90 steers, 80 on the drives and 85 on the trailer.

    Recommend from the weight inflation chart. ( Firestone? )

    last steers went 190k with lots of tread left. Drives came off at 360k put them on trailer while I caped the trailers ( spread flat ) at 130k.

    6.43 MPG.
     
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  4. rbrtwbstr

    rbrtwbstr Road Train Member

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    What kind of weight are you hauling?

    We're running right at 80k when loaded, approx 26k empty doing local tanker work. Our mechanic swears by 80-85 psi in the drives. I can't wrap my head around it when I'm loaded and the tire looks half flat. So I usually put 110 in them.

    Most of the guys get about 100-120k out of the drives before they're wore out. I'm getting 150-170k. Can't really say how long the steers are lasting, I don't really pay attention that close. I just know when they're worn they get replaced.

    And the fuel mileage for us is usually pretty pathetic, running a PTO driven blower for 2 1/2 hours a day. Most of our guys get around 5-5.5 mpg in the summer. I'm usually 6- 6.25.

    All that said, I'm not a believer in the low tire pressure theory. If it works for others, awesome.
     
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  5. Tug Toy

    Tug Toy Road Train Member

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    80k or less flatbed freight. %30 deadhead.
     
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  6. Michael 247

    Michael 247 Medium Load Member

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    I have the Cat Eye tire monitor system and Really Like it...No electronics...Just a quick look at them every time I walk around Truck...
     
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  7. God prefers Diesels

    God prefers Diesels Road Train Member

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    Same here. And makes it super easy to air up a set of duals.
     
  8. TallJoe

    TallJoe Road Train Member

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    My average gross weight is around 60 000 lbs ( dry van)
    Michellins on the steering are inflated up to 110 psi. I had them last well over 200k miles.
    All the rest, including trailer at 100 psi.

    Even though I check the pressure regularly,
    I noticed that most of my tires, lf they go bad they do so prematurely due to my bad luck e.i. catching a bolt on a steering tire or other external damage -hard to predict, hard to avoid - however, I started checking dock areas for nails and other crap before backing up. I've seen a few inconsiderate a holes sweeping out their trailers right in front of a dock door.
     
    Last edited: May 13, 2021
    Brettj3876 Thanks this.
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