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Old 12-13-2009, 08:02 AM   #1
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Tires thump after rv sits for a few days

Hi All,

I realize that from the motorhome sitting that the tires take a set and it takes awhile for them to heat up after driving to get them round again (it feels like the whole motorhome is ready to shake itself apart). I was wondering does this happen to all motorhome tires? Is there a way to help get rid of it? Just looking to see what others do. Any help would be appreciated.

THanks
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Old 12-13-2009, 08:08 AM   #2
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Hi All,

I realize that from the motorhome sitting that the tires take a set and it takes awhile for them to heat up after driving to get them round again (it feels like the whole motorhome is ready to shake itself apart). I was wondering does this happen to all motorhome tires? Is there a way to help get rid of it? Just looking to see what others do. Any help would be appreciated.

THanks
I have not had that problem with any motor home on Good Year tires. I do have it with my toad which is on MasterCraft tires. It is short lived though and as long as I know what it is, I don't worry about it.
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Old 12-13-2009, 09:30 AM   #3
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Tires develope flat spots while sitting for good lengths of time, I know of no tire made that will not do that. A few miles down the road and getting them hot makes it go away.
My Coach does it sitting on stone outside as well as my Corvette sitting inside on concrete.

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Old 12-13-2009, 09:38 AM   #4
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I park and store with jacks down to lessen the problem and it does help.
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Old 12-13-2009, 11:17 AM   #5
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It's true that a sitting tire gets a slight flat spot, but I haven't heard a noticeable thump from a "flat" tire since the days of nylon tires back in the 50's and 60's. Modern steel and polyester betls quickly retrun to their normal shape. None of the Goodyear or Michlin RV tires I have owned in the last 12 years have made a sound or vibraton, even after sitting for a couple months..

I would be concerned that you may have incipient belt or tread separation.
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Old 12-14-2009, 02:49 PM   #6
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I would be concerned that you may have incipient belt or tread separation.
I second that.
Also, how old are your tires. The older the rubber gets the less pliable it becomes.
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Old 12-14-2009, 07:03 PM   #7
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When I replaced the tires on my first MH with truck tires, not radials, the ride was simular to what you described. For the first 10 miles the bumping was very bad.
When you replace you tires be sure to get a radial made for a motorhome.
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Old 12-14-2009, 07:36 PM   #8
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I have not heard of that since the nylon and fiberglass tires. Even today's tires will have a slight tendency to do it for a few miles, but not long.

Just go slow for the first few miles and give them time to warm up a bit. If they are the OLD nylon tires...must be time for new tires.

Ken
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Old 12-14-2009, 07:53 PM   #9
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There are usually at least four long shafts under a motorhome that do not rotate when the rig is in storage. They are the rear axle shafts and the 2-piece driveshaft. They will take a set, that is they will bow under their own weight, when they are immobile over time. This is the source of your vibration. Good luck!!
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Old 12-14-2009, 07:56 PM   #10
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I agree, doesn't happen with Michelin, or Goodyear Radials. Thumping when cold went out with Nylon tires. A separated belt will thump hot or cold.

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Old 12-15-2009, 04:35 AM   #11
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Thanks everyone for your thoughts and helping me.
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