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Author Topic: Tire Balance  (Read 8648 times)

Jerry Emert

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Tire Balance
« on: May 11, 2014, 07:57:29 PM »
Next question,how do I balance the load across all 8 tires?  Haven't been able to get to a place that could weigh corners yet.
front weighs 13040 and the rear weighs 22520.
How would I balance the tire pressures?
Tires are Hankook 275/70R 22.5.
Thanks in advance.
Jerry
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Jerry, Chief USN Retired
2003 Patriot Thunder Lexington 40' 3 Slides
C-12 Ser#  2KS89983
4000MH

Jerry Carr

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Re: Tire Balance
« Reply #1 on: May 11, 2014, 08:22:41 PM »
Welcome Aboard Chief,
You really need the weight at each axle this can be done in some states at the truck scales or better yet at an FMCA rally your front weight 13040 seems a little high what does your manual show for max axle wt.? How did you get the weights listed in your post?  
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Regards,
Jerry Carr
Past Region 1 V.P.
Entegra Anthem
06 Pat. Thunder Cat C13

Karl Welhart

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Re: Tire Balance
« Reply #2 on: May 11, 2014, 08:46:33 PM »
Jerry,

I agree with Jerry Carr that you must weigh each corner.  However, if your weights are correct, you are at the high end of the load/pressure chart for the front tires.  I also run Hankook AH12 in 275/70-22.5.  I would run 120# on the fronts and 110# on the rear until you can verify the four corner weights.  BTW, you can run these tires at 130# if the wheels can handle that high of pressure.  The max pressure for your wheels will be stamped on the wheel.
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Karl and Nancy Welhart, F36017
2014 Tiffin Allegro Bus 37AP (2014-current)
2002 Patriot (2002-2014)
1997 Monterey (1997-2002)
Niceville, Florida

Steve Jewell

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Re: Tire Balance
« Reply #3 on: May 11, 2014, 11:01:55 PM »
Karl,  What are you running for air pressure on the tag axle?

Steve J
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Jerry Emert

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Re: Tire Balance
« Reply #4 on: May 12, 2014, 12:08:09 AM »
Quote from: Jerry Carr
Welcome Aboard Chief,
You really need the weight at each axle this can be done in some states at the truck scales or better yet at an FMCA rally your front weight 13040 seems a little high what does your manual show for max axle wt.? How did you get the weights listed in your post?  

The MH is out of service right now so no chance to look for better scales.  I got the weight at a truck stop CAT scale.  I can't get the axle rating right now.  I've got 125# in all tires right now.  I thought that front weight looked kind of high but no idea how it could be.  Nothing in the front of the coach when it weighed but but my wife and I.  I could stand to lose a few pounds but not that much!!  We are new in the MH so we haven't even accumulated much stuff yet.
Ideas?  Thanks
Jerry
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Jerry, Chief USN Retired
2003 Patriot Thunder Lexington 40' 3 Slides
C-12 Ser#  2KS89983
4000MH

Karl Welhart

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Re: Tire Balance
« Reply #5 on: May 12, 2014, 12:08:50 AM »
I do not have a tag axle...  
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Karl and Nancy Welhart, F36017
2014 Tiffin Allegro Bus 37AP (2014-current)
2002 Patriot (2002-2014)
1997 Monterey (1997-2002)
Niceville, Florida

Jerry Emert

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Re: Tire Balance
« Reply #6 on: May 12, 2014, 12:45:16 AM »
Found a pic I took when looking over the coach before I bought it.  It had these numbers on it:
GVWR=42800
GCWR=52800
FGAWR=12800
RGAWR=20000
I'm guessing FGAWR is front axle weight limit, 202 ibs of the overweight weight is me.

Also How does the weight get distributed, especially the Tag?  
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Jerry, Chief USN Retired
2003 Patriot Thunder Lexington 40' 3 Slides
C-12 Ser#  2KS89983
4000MH

Jerry Carr

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Re: Tire Balance
« Reply #7 on: May 12, 2014, 01:18:35 AM »
Chief, you may want to talk with a Pro about the front weight, you may be able to adjust the air on the tag to help the front end. The main thing in getting the real weights on each axle, without the actual weights you are really not able to fix you problem.

We have some folks in the club that can help once you get your weights (Roy Muller or Gerald Ferris) I don't want to give you incorrect information. I am not sure which models/years that the front axle was undersized, some folks have changed tires to larger sizes to take heavier loads. If you are in OR you should take the rig over to Henderson Line UP we have a link on the front page of the BAC home page. The other folks that may be able to help Beaver Coach Sales (in Bend OR) they may be able to help with your questions.  What is your location?

      
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Regards,
Jerry Carr
Past Region 1 V.P.
Entegra Anthem
06 Pat. Thunder Cat C13

Jerry Emert

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Re: Tire Balance
« Reply #8 on: May 12, 2014, 01:30:41 AM »
Quote from: Jerry Carr
Chief, you may want to talk with a Pro about the front weight, you may be able to adjust the air on the tag to help the front end. The main thing in getting the real weights on each axle, without the actual weights you are really not able to fix you problem.

We have some folks in the club that can help once you get your weights (Roy Muller or Gerald Ferris) I don't want to give you incorrect information. I am not sure which models/years that the front axle was undersized, some folks have changed tires to larger sizes to take heavier loads. If you are in OR you should take the rig over to Henderson Line UP we have a link on the front page of the BAC home page. The other folks that may be able to help Beaver Coach Sales (in Bend OR) they may be able to help with your questions.  What is your location?

      
I think I'm probably about as far from bend as I can get and stay in the good ole USA.  I'm in Orlando FL area.
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Jerry, Chief USN Retired
2003 Patriot Thunder Lexington 40' 3 Slides
C-12 Ser#  2KS89983
4000MH

Tom and Pam Brown

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Re: Tire Balance
« Reply #9 on: May 12, 2014, 01:54:58 AM »
Jerry,  
You can adjust the weight on the front axle with the tag. As far as corner weighing, it may be hard to find and in my opinion not very meaningful as it is almost impossible to change the results.  By that I mean you cannot move enough weight around that will make any meaningful difference.  The only benefit to corner weighing is to adjust air pressure.
The front axle can be lightened by releasing pressure on the tag.
Again, this is my opinion.
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Jerald Cate

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Re: Tire Balance
« Reply #10 on: May 12, 2014, 01:59:32 AM »
Jerry,

I have the same year and model of your Beaver and agree with the others your front axle is too heavy.  My front FGAWR is 12800 like yours but my front axle only weighs 11000 lbs.  My drive axle is 19440 and tag axle is 5640.  I always weigh my coach with a full tank of fuel and the others (except LP) are empty.  We're not fully loaded for long term travel yet but I have plenty of headroom for the wife's shoes.  Maybe some of the experts can give you advice how to adjust the axle loading.  I've read the tag axle adjustment might help but I haven't messed with mine since I'm pretty satisfied with my current weight distribution.
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Steve Jewell

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Re: Tire Balance
« Reply #11 on: May 12, 2014, 02:01:32 AM »
Sorry Karl I meant to say Jerry

Jerry,  What are you running for air pressure on the tag axle?

Steve J
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Gerald Farris

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Re: Tire Balance
« Reply #12 on: May 12, 2014, 03:35:19 AM »
Jerry,
The only way to shift weight on your coach is by adjusting the air bag pressure on your tag axle. As the tag axle weight increases, the drive axle reduces, but the front axle increases. The only way to properly adjust the tag axle air bag pressure is to have all of the tires on scales and adjust the tag axle for the proper loading of all axles.

Gerald  
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Jerry Emert

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Re: Tire Balance
« Reply #13 on: May 12, 2014, 03:57:15 AM »
Thanks all.  I'll adjust the tag pressure first chance I get.
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Jerry, Chief USN Retired
2003 Patriot Thunder Lexington 40' 3 Slides
C-12 Ser#  2KS89983
4000MH

Robert Mathis

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Re: Tire Balance
« Reply #14 on: May 12, 2014, 05:51:24 PM »
Jerry, what I do is to go to a scale that will weigh each of the three axles at the same time, then adjust the Tag to get the right amount of weight on the front axle. I'm fortunate to have a State DOT scale just a couple of miles away from the house, that is almost never busy. They let me get positioned with one axle on each of the three scales, thenI go to the rear and adjust the air pressure until the weighmaster tells me it looks good. Obviosly, getting a setup with a seperate scale for each wheel or set of wheels would be ideal. Then you can not only get the three axles adjusted, but could move stuff around to try to balance the corners as well.
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