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Old 10-30-2015, 04:48 PM   #11
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What's wrong with the recommended tire inflation pressures on the tire placard, certification label and in your owner's manual? Has something been changed that would require higher inflation pressures? It's never recommended to use less tire inflation pressure than what has been recommended by the vehicle manufacturer for Original Equipment tires or like sized replacements.
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Old 10-30-2015, 04:58 PM   #12
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What's wrong with the recommended tire inflation pressures on the tire placard, certification label and in your owner's manual? Has something been changed that would require higher inflation pressures? It's never recommended to use less tire inflation pressure than what has been recommended by the vehicle manufacturer for Original Equipment tires or like sized replacements.

Tires for our Class A motorhome tires have recommended tire pressures charts based on axle weight. That is what the discussion is about. Those charts are available for other tires by manufacturers.


Paul
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Old 10-30-2015, 06:21 PM   #13
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I had 255s and with my weight at the top I was required to run 110psi and was over max on weight 275s you can run lower pressures at the same weight. It is all about the load.
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Old 10-30-2015, 06:37 PM   #14
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Tires for our Class A motorhome tires have recommended tire pressures charts based on axle weight. That is what the discussion is about. Those charts are available for other tires by manufacturers.
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Paul
Here are a couple of useful references that include tire inflation pressers and procedures.

http://www.goodyearrvtires.com/tire-inflation-loading.aspx

http://www.trucktires.com/bridgestone/us_eng/press/zip/WeighForm.pdf


Q: What are the consequences of inflating the tires to accommodate the actual loads?

A: If the inflation pressure corresponds to the actual tire load according to the tire manufacturerís load and pressure table, the tire will be running at 100% of its rated load at that pressure. This practice may not provide sufficient safety margin. Any air pressure loss below the minimum required to carry the load can result in eventual tire failure. (Bottom of last page).


https://toyotires2-1524598101.netdna-ssl.com/assets/lib:toyo%20content/TSD-12-013_RV_Motorhome_Tire_Inflation_Safety_Maintenance _0.pdf
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Old 10-30-2015, 06:37 PM   #15
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What's wrong with the recommended tire inflation pressures on the tire placard, certification label and in your owner's manual? Has something been changed that would require higher inflation pressures? It's never recommended to use less tire inflation pressure than what has been recommended by the vehicle manufacturer for Original Equipment tires or like sized replacements.

Airedale if you would complete your signature to include your RV make it is helpful. So many different types of RV's it's very helpful to see what you have.
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Old 10-30-2015, 06:47 PM   #16
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https://www.michelinb2b.com/wps/b2bc...s_Brochure.pdf

This should explain how tire inflation for a Moho works. I have no idea what RV you have but it is standard across all Manufacturer's of Moho's and tires for Moho's to adjust the inflation for the load. Most will not set the psi exactly to the load but will and a percentage to the load to accommodate extra passengers.
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Old 10-30-2015, 07:03 PM   #17
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This is why people need to understand what forum they are in. If you don't own a class A diesel pusher you can not understand how weight dictates tire pressures within their load ranges. Lighter loads within load range on Class A diesel pushers you can run less pressure for softer ride. If you are near the max load capacity of the tire you need to run the max. Most of us have Michelin RV tires different from truck tires. I would also never run GOODYEARS too many problems over the years.
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Old 10-30-2015, 07:19 PM   #18
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https://www.michelinb2b.com/wps/b2bc...s_Brochure.pdf

This should explain how tire inflation for a Moho works. I have no idea what RV you have but it is standard across all Manufacturer's of Moho's and tires for Moho's to adjust the inflation for the load. Most will not set the psi exactly to the load but will and a percentage to the load to accommodate extra passengers.
A pure misunderstanding. I didn't say increasing the tire pressure was not allowed. However, balancing your cargo is a better solution than overloading a tire position or entire axle.

Under inflation is anything below a vehicle manufacturers recommendation.

Over inflation is anything above the tire manufacturer's recommendation found on the individual tire.
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Old 10-30-2015, 07:25 PM   #19
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Airedale if you would complete your signature to include your RV make it is helpful. So many different types of RV's it's very helpful to see what you have.
Who I am, what I drive, or haul has no value to the subject matter as long as Iím not quoting experience. RV tires are my specialty, all of them. I study them from the smallest to the largest including medium and heavy truck tires. Iím quite familiar with all of the DOT regulations and tire industry standards.

I donít often provide references unless itís necessary to justify what Iím posting. The bottom line about tires is whoís responsible. Thatís the vehicle manufacturer.

All Motorhome tires (A -B - C) are initially fitted according to FMVSS 571.120.
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Old 10-30-2015, 07:45 PM   #20
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Who I am, what I drive, or haul has no value to the subject matter as long as I’m not quoting experience. RV tires are my specialty, all of them. I study them from the smallest to the largest including medium and heavy truck tires. I’m quite familiar with all of the DOT regulations and tire industry standards.

I don’t often provide references unless it’s necessary to justify what I’m posting. The bottom line about tires is who’s responsible. That’s the vehicle manufacturer.

All Motorhome tires (A -B - C) are initially fitted according to FMVSS 571.120.
Don't take offense but: It has everything to do with it if you want any credibility. We have been bullied by others that claim to have the experience. Did you know many of us have had an upgrade in tires and front axle airbags to be legal on weight? This why we are so sensitive to people who don't own one of our coaches to come in and try to tell us what we need to do. Most of us have gone through problems that new members /owners don't have the knowledge of and want to help them by asking specific questions the outsiders have not had to deal with. That is one of the reasons I think there need to be a separate sign to get to the different model forums.
Off the soap box thanks.
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