Why trailers almost always have auto inflate on tires, but trucks almost never do?

Discussion in 'Experienced Truckers' Advice' started by PermanentTourist, Jul 18, 2021.

  1. Val_Caldera

    Val_Caldera Light Load Member

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    I've only had 2 Tire Blowouts in 20 years and they were Recaps.
    Used to Run Steers & Drives, 100-105. Trailers 95-100.
    NEVER HAD ANY PROBLEMS.
    Truck Tire Manufacturer (forgot their name) in Southern California stated "Tires at 20% low (from sidewall max pressure) are FLAT"!
    I've aired up a few Trailer Tires from 45 p.s.i. to 95 and yes they could have exploded.
    It WAS a "lot more fun" airing up Tires in 35-45 degrees with a nice Arctic style "breeze"!
    CHEERS!!
     
    No Exit Thanks this.
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  3. msh

    msh Bobtail Member

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    Before 2010 tire inflation on trailers were rare.. i hope very soon we will see more trucks with tire automatic inflation
     
    Last edited by a moderator: Jul 24, 2021
  4. Magoo1968

    Magoo1968 Medium Load Member

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    It’s a nice idea but TRAIN drivers on it . I’ve never pulled a trailer with it but I know what that white light up front means . You tell drivers and they say it’s ok it will go out after awhile geez.
     
  5. kylefitzy

    kylefitzy Road Train Member

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    Kansas city,Mo
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    They are correct. After the low tire in inflated the light goes out and everything is fine. What’s the issue?
     
    flood Thanks this.
  6. MACK E-6

    MACK E-6 Moderator Staff Member

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    Baltimore, MD
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    Sounds like they’re whining because of the bright light in the mirror.

    A now former terminal manager we had used to always complain about the concrete apron around the barn sucking the air out of trailer tires over weekends. Now with these systems that is, in a manner of speaking, entirely possible.

    Last year before the Thanksgiving weekend I checked my tires before I parked and all was well. Monday when I came back to work I found two of them flat. Turns out there was a slow leak that the system could easily keep up with during the course of a normal week, but drained the tires completely over four days off.
     
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  7. flood

    flood Road Train Member

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    yup... the only time I worry about that light is if it stays on for more than about 10ish min, or if it comes on when I'm driving..
     
    ZVar and msh Thank this.
  8. Magoo1968

    Magoo1968 Medium Load Member

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    I see them going down the road like that I can understand parked but driving system shouldn’t need to add air steady unless something is wrong or flat.
     
    kylefitzy, flood and krupa530 Thank this.
  9. kylefitzy

    kylefitzy Road Train Member

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    Kansas city,Mo
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    Probably a slow leak. That’s the best part about the systems. When you run something small over you can keep going until you can get it fixed. With out the system the tire will lose air until it’s caught in an inspection or blows due to underinflation.
     
  10. aussiejosh

    aussiejosh Road Train Member

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    Airlie Beach QLd
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    This is why we do a pre start at the beginning of the day however that usually does involve checking the trailer tyres also.
     
  11. Dockbumper

    Dockbumper Road Train Member

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    Yup.....that's what you're supposed to do.:rolleyes:
     
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