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. PermanentTourist

    PermanentTourist Medium Load Member

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    Is it a safety thing?

    Is it because trailers get dropped for a long time if it's a company trailer?
     
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  3. MLC Adventures

    MLC Adventures Medium Load Member

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    Trailers are the most neglected thing on the road, both in terms of driver and mechanical attention. Most drivers are in the same truck everyday.
     
  4. PermanentTourist

    PermanentTourist Medium Load Member

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    Still kind of wish trucks had it. I have a very slow leak in one of my drives, too slow for the TA to find and fix. And it's annoying having to pump it up 30 PSI every three weeks.
     
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  5. bad-luck

    bad-luck Road Train Member

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    On trailers its easier. As they are able to run the air line straight through the axle, and its not a drive axle.
     
  6. Magoo1968

    Magoo1968 Medium Load Member

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    A spray bottle with soapy water. Or remove assembly and put in a water tub
     
  7. PermanentTourist

    PermanentTourist Medium Load Member

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    Yeah, we tried that at the TA, no luck, it's too slow. Like 5-10 PSI a week.
    I'm just nursing it until the fall when I'm getting a whole new set of drives anyways, it'll be fine until then.
     
    slow.rider Thanks this.
  8. flood

    flood Road Train Member

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    if you know it's 5-10 a week then WHY are you waiting to fill it 40 every 3 WEEKS....??
     
    p608, Stray_Dog, 86scotty and 3 others Thank this.
  9. uncleal13

    uncleal13 Road Train Member

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    I carry a plug kit, they work pretty good to get me down the road.
    Then when convenient I still get it fixed properly at a tire shop.

    Trailer axles are hollow, easier to run the air lines. They do make ones for trucks, but they use lines that are suspended over the tires and drop down to the hub to feed the tires.
     
  10. jason6541

    jason6541 Road Train Member

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    The units for the trucks are expensive and seal and o ring issues. They look hideous and to easy to break off.
    I am glad I own my equipment.
    Easier to just check my tires daily with a gauge when cold. All of 5 min or less
    They make the halo system which bolts to axle flange.
     

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  11. PermanentTourist

    PermanentTourist Medium Load Member

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    Wow. I'm usually not too concerned with how my truck looks as long as it's clean enough to not attract DOT's attention... but boy, those things are sure are ugly
     
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