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Old 10-27-2021, 10:14 PM   #1
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Centramatics on 19.5 Duals

I'm experiencing some vibration that seems to be coming from the rear. I experienced it on the original tires and as well on on the new ones which were installed in July. I have zero vibration in the front or at least none felt in the steering wheel.
Has anyone else with 19.5 duals experienced vibration and did installing Centramatics resolve it? Thanks!
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Old 10-28-2021, 06:39 AM   #2
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vibration

The last time I had my motorhome inspected I told them I had a slow leak in the outside dual wheel . I picked up the MH and started down the road and immediately noticed a vibration that was not there before. Took a little detective work on my part as they said they didn't pull the wheels for inspection but after I checked the tires they had aired the tires up to 110 lbs, I dropped then down to 80 which is what I run and the vibration went away
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Old 10-28-2021, 08:46 AM   #3
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The only thing centramatics will resolve are slight imbalances. Anything strong enough to be felt from the rear is likely more than a slight imbalance. Having chased subtle and not so subtle vibration issues on just about every vehicle I've owned in my life it comes down to just how bad ($) you want to fix it.

First thing I would try is to move wheels around to see if the trouble moves with them. Not easy on an RV but it eliminates some of the variables. In so doing you also make sure if you have lug centered rims that they're being properly fitted and torqued. Of all the issues I've had only once was the problem not a rim and/or a tire. You can perfectly balance a wonky tire or rim so don't expect it will be as simple as a "rebalance".

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Old 10-28-2021, 10:41 AM   #4
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We have installed many of these balancers at our shop. They always worked well. If you go on their site, you will find that they advise that the tires do not have to be balanced before installation of the balancers. According to their website, the balancers will work without pre balancing unless the tire or the rim is bad. Nowhere does it say they only balance slightly out of balance tires
This is my fifth motorhome and I have used centramatic balancers on the last four. They have worked well for me and all my customers.
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Old 10-28-2021, 10:50 AM   #5
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Originally Posted by ga traveler View Post
We have installed many of these balancers at our shop. They always worked well. If you go on their site, you will find that they advise that the tires do not have to be balanced before installation of the balancers. According to their website, the balancers will work without pre balancing unless the tire or the rim is bad. Nowhere does it say they only balance slightly out of balance tires
This is my fifth motorhome and I have used centramatic balancers on the last four. They have worked well for me and all my customers.
Thanks, I plan to put them on next time I have it at a tire shop
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Old 10-28-2021, 08:01 PM   #6
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Put them on my 19.5's front and rear duals when I had vibration from the factory and wanted to try a DIY solution. They did improve the vibration some but was still very noticeable, ended up taking it to competent dealer (Gator Ford) for EVM measurements and index and Road Force balance which they where able to get all but one tire into spec, that last tire would need to be replaced to fix and by then out of warranty. Huge improvement though basically no left vibration I can feel.

Should have taken to dealer who actually has the right equipment first and get a good balance first might not have needed to bother with Centramatics, although I do still like that I have them and do know they can improve dynamic balance, easy to install I did it myself without much trouble since 19.5's are manageable.
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Old 10-28-2021, 10:51 PM   #7
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Originally Posted by jharrell View Post
Put them on my 19.5's front and rear duals when I had vibration from the factory and wanted to try a DIY solution. They did improve the vibration some but was still very noticeable, ended up taking it to competent dealer (Gator Ford) for EVM measurements and index and Road Force balance which they where able to get all but one tire into spec, that last tire would need to be replaced to fix and by then out of warranty. Huge improvement though basically no left vibration I

Should have taken to dealer who actually has the right equipment first and get a good balance first might not have needed to bother with Centramatics, although I do still like that I have them and do know they can improve dynamic balance, easy to install I did it myself without much trouble since 19.5's are manageable.
Appreciate the feedback. Part of the problem is that it's do hard to find service for motorhome or large tires that you can trust to do the job correctly.
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Old 10-29-2021, 08:02 AM   #8
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Appreciate the feedback. Part of the problem is that it's do hard to find service for motorhome or large tires that you can trust to do the job correctly.
You hit the nail right on the head with that one! Many people on this forum think that dealers donít care. They do care. When I was service manager, I many times had to run to other dealers for a part we needed immeadiatly. Every dealership I went to the manager or owner came out and offered me a job. That is not the problem. The problem is finding anyone that wants to work out in the heat and cold, in cramped quarters, for the same money, as someone in a office with a computer and a coke machine and air conditioner.
I am 81 years old diabetic, with leukemia and chronic shingles and still work at a garage when they get a motorhome in.
I know what the problem is, I just wish I knew the answer.
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Old 10-29-2021, 08:11 AM   #9
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Appreciate the feedback. Part of the problem is that it's do hard to find service for motorhome or large tires that you can trust to do the job correctly.
Gator Ford is on I4 across from Lazydays east of Tampa which is not too far a drive from St Augustine, might be worth it to have them investigate and do a balance and index. They seem to deal with F53 vibrations a lot and had the right equipment and skills to track it down and fix.

This was a few years ago but they treated me very well at a reasonable price, don't see many Ford Dealers with a dedicated RV service page:

https://www.gatorford.com/motor-home...-rv-tampa.html
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Old 10-29-2021, 11:28 PM   #10
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Gator Ford Parts Department is excellent

It is hard to get some parts now due to the virus. But Gator Ford found me some parts by looking at other chassis doing a MacGyver.
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