Weird problem, trailer sway and possible 5th wheel issue?

Discussion in 'Questions From New Drivers' started by nextgentrucker, Oct 13, 2025.

  1. Powder Joints

    Powder Joints Subjective Prognosticator

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    That tire looks like it was rubbing on something. In anycase probably would not cause the drifting trailer. Looks like some one has dragged the trailer over a few curbs getting into deliverys.
     
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  2. nextgentrucker

    nextgentrucker Road Train Member

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    What are the biggest reasons they do that?
     
  3. Powder Joints

    Powder Joints Subjective Prognosticator

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    Sharp metal edge.
     
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  4. nextgentrucker

    nextgentrucker Road Train Member

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    Man, I hope not...
     
  5. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Check the fifth wheel plate that it has grease/lube. If it’s dry, you could get what you’re explaining.
     
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  6. 201

    201 Road Train Member

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    Oh, this isn't about pretzel rods again, is it,,but I agree^^^, a dry 5th wheel does all kinds of things, but seems to me, the tire wear is indicating a severe alignment issue. Loose wheel bearings may be more noticeable under load, tire pressure maybe?
     
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  7. Long FLD

    Long FLD Road Train Member

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    Those are the Michelin XDA 5+ tires, not retreads. And when they’re new they have 30/32 tread which would absolutely make the truck feel like the back end is sliding out from under you. It will probably feel this way for a couple weeks at least. And the reason the tread looks the way it does is because they used a truing machine on them.

    Edit: I also see your tires are 11r22.5. Tall sidewalls with nearly an inch of tread on new tires will make the back end feel loose.
     
    Last edited: Oct 14, 2025
  8. 77fib77

    77fib77 Road Train Member

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    It's my truck it took 4 hours of time. Plus getting to mechanic and having them order 5th wheel ect....
     
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  9. kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

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    Trailers can have alignment issues just like tractors can. And they can make the trailer off track. I had a couple that even though I could not see any off-tracking, my whole truck would shake, especially when accelerating. If your next trailer doesn't do this, I wouldn't be too concerned.
     
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  10. CrappieJunkie

    CrappieJunkie Wishin' I was fishin'

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    Adjust your mirrors and see if that helps.