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Vibration While towing boat

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  • Vibration While towing boat

    I have a tandem axle boat trailer that when i am towing my at speeds of about 60 to 65 mphs i get a sever vibration in my truck. I thought it might be my truck so I had a friend pull my boat with his truck and had the same result. Anyone ever had that type of issue. I have checked all the bearing and everything seems to check out good.

  • #2
    Re: Vibration While towing boat

    Check the spring bushings...they connect to the U shackle on the frame.
    A missing rubber or bushing can cause it to slop around.

    Straps can cause some vibration too.

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    • #3
      Re: Vibration While towing boat

      have the trailer tires been balanced? you will hear all kinds of conflicting stories about if you actually need to balance them, but no one will argue that it doesn't hurt to do it. I'd check the obvious as the post above mentioned, nothing bent/broke/loose, and if that checks out, get the tires balanced.

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      • #4
        Re: Vibration While towing boat

        Also check for broken belts in the tires, they'll have high and low spots in the thread. You can feel them by running your hand over the thread.
        A good brand of engine is one that runs

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        • #5
          Re: Vibration While towing boat

          Originally posted by smokingcrater View Post
          have the trailer tires been balanced? you will hear all kinds of conflicting stories about if you actually need to balance them, but no one will argue that it doesn't hurt to do it. I'd check the obvious as the post above mentioned, nothing bent/broke/loose, and if that checks out, get the tires balanced.
          Good point..they could be so flat spotted!

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          • #6
            Re: Vibration While towing boat

            Check the balance on the trailer tires, also check to make sure all bolts and such are tightened and present as well as shackles, I had a guy come into the RV shop I worked at and he was going crazy, found out upon visual inspection everything looked fine, but upon pulling the boat off the trailer and releasing the pressure on the spring shackles he has a crack in one of the shackles, was not visible with the boat on the trailer, but was visible when the springs were unloaded..

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            • #7
              Re: Vibration While towing boat

              Originally posted by Cadwelder View Post
              Also check for broken belts in the tires, they'll have high and low spots in the thread. You can feel them by running your hand over the thread.

              Between you and smokingcrater, you've probably gotten the most likely candidates. On my utility trailer, it pulled with excessive vibration until I got the wheels balanced.
              Jay Hanig
              Topsail Beach, NC USA
              1985 Galaxy 176 Bowrider
              "No Good Deed"

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              • #8
                Re: Vibration While towing boat

                Jack one side of trailer up at a time and spin wheels.
                You should be able to see a broken belt or a bent wheel.

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                • #9
                  Re: Vibration While towing boat

                  Beware of running your hand where you cant see.
                  There could be steel belts protruding .

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                  • #10
                    Re: Vibration While towing boat

                    Most vibrations from trailers are caused by them sitting for long periods of time in one place thuss flat spoting the tires and the results are a permanent flat spot in the tire. Take the trailler only to a tire shop with a portable tire spinner and see what happens. If that is not available then take the trailer with boat off it on the road after you have removed one tire at a time to see just which tire is causing the problem. I have done this to other trailers and that is how I have found whichtire was the bad one. Good luck.



                    Remember if you stand there long enough looking at it someone will come alone and (show) fix it for you

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                    • #11
                      Re: Vibration While towing boat

                      Originally posted by boateric View Post
                      Most vibrations from trailers are caused by them sitting for long periods of time in one place thuss flat spoting the tires and the results are a permanent flat spot in the tire.
                      i haven't had that happen for at least 10 years that i can remember. on ancient tires it would happen, something about the tire construction. now i've tires that will sit for 9 months+ and although they will have a very temporary flat spot, its gone within a couple hundreds yards at most.

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                      • #12
                        Re: Vibration While towing boat

                        I have not had a problem with flat spotting on a trailer tire for a long, long time now, but I do remember the old bias ply tires on my car flat spotting and thumping terribly until the tire warmed up, but as I said, since the advent of newer technologies in tire construction I have not seen flat spotting problems for a long time now.

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                        • #13
                          Re: Vibration While towing boat

                          Originally posted by 1fishbone View Post

                          Straps can cause some vibration too.
                          l would also suggest checking tie down straps, if my strap wasn't done up really tight, l'd feel a vibration,
                          would re-tighten and vibration would be gone,
                          might just be that,
                          happy little vegemite

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                          • #14
                            Re: Vibration While towing boat

                            Balance the tires!!

                            Why does anyone think they should balance their car tires for 70 mph travel and not do the same thin for a boat trailer?

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                            • #15
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                              Re: Vibration While towing boat

                              I had same problem. Took my truck down to a tire shop and they said I had two dif size tires on truck,1 odd one,replaced it runs smooth.I thought it was the trailer but I was wrong.e
                              SMOKIN BOAT [not cause she looks good]
                              88 Mach 1 Challenger,v6 205hp
                              Resto https://forums.iboats.com/showthread.php?t=456745
                              Gauge panel https://forums.iboats.com/showthread.php?t=495963
                              Swimplatform https://forums.iboats.com/showthread...d+swimplatform

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