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Old 10-22-2012, 11:22 AM   #1
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Vibration help

The basics: 2004 National RV Seabreeze 1341, Ford F53 chassis, Goodyear steering tires, 30,000 miles on coach, about 10,000 on tires, tires 4 years old, well maintained coach. I bought 3 months ago.

I have not been very happy with the ride of this since purchase, but I have no basis for comparison as I have always towed trailers before. The ride is OK, but harsh. Steering is fine, a little wander in wind and passing vehicles but better than TT was. My main concern right now is vibration. It appears to be in front of vehicle, some sensation through steering wheel. Vibration becomes most noticable between 40 - 45 MPH, most notable when accelerating slowly, or at steady speed in that range. Some times feel like it is "harmonic", my meaning that it feeds on itself. I suspect either front end components or tire balance. No noticable change when letting up on accelerator, so I am not suspecting driveshaft. At highway speeds, mine are 55 - 60 MPH, there is still some vibration but not as bad as at lower speeds. By no means consistent, sometimes accelerate right through that speed, when merging on highway for example, and hardly notice it. Slow acceleration is when most noticable. No indication of unusual tire wear, no feathering, edge wear, cupping or chopping. I am thinking of heading to alignment shop for front end check, alignment check and balance front tires, then see what happens.

Would appreciate your input and benefit of your experiences.

Also, MH is lightly loaded, me and co-pilot, 20 gals fresh, empty holding tanks, and not much gear, weekenders only at this point.

Have big trip coming up and would like to clear this up before I go next month.

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Old 10-22-2012, 12:32 PM   #2
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Have the front tires moved to the rear inside, I believe that is what most recommend. You aren't showing wear like mine were when I had this problem. The fix for me was a set of new fronts.

'02 Winnebago Journey DL, DSDP, 36' of fun.

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Old 10-22-2012, 02:54 PM   #3
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I chased similar symptoms at 55 MPH from the time the rig was new.Balanced the tires,tried balancing beads,aligned the drive shaft,moved tires around to no avail.Dumped the Goodyear tires for Michelins and the vibration was gone.
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Old 10-22-2012, 02:58 PM   #4
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Cheapest right off is to move the front tires to another position. On my truck I was having a pulling problem. Front end guy figured out it was a tire. Moved the tire to the rear and no more problem. Next would be check drive shaft carrier bearing, and total front end inspection be a highly qualified front end expert.
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Old 10-22-2012, 03:14 PM   #5
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To deal with the harsh ride you may want to consider installation of the Koni FSD shocks on your front suspension, they sure did wonders for our coach.

Good luck and Safe travels...
Jim & SherrySeward

2000 Residency 3790 v10 w/tags 5 Star tune & Banks system Suzuki XL7 toad
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Old 10-22-2012, 03:48 PM   #6
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It were me I would slap 6 new tires on it and see what happens. Also do the cheap handling fix. The koni FSD shocks may help also. On my 2013 F53 with 2400 miles on it I have done the cheap handling fix, which did wonders. Installed centramatic wheel balancers on all 4 corners, haven't test drove yet. 4 koni FSD shocks and a rear trac bar are on their way. While I am in the mood may just go with aluminum wheels all around. Hate the junk steel with simulators. It drove pretty good and not really much tire vibration under 70, which I usually about 60 to 65 anyway. 4 year tires can cause problems and still look good

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