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Old 08-18-2018, 08:43 AM   #1
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How to weigh and tire pressure

Tire Pressure questions
There seems to be many questions that start out with I have an XX ABC RV, Class A, B, C, or TT, what tire pressure should I use..
Great question!! as we all know it is very dangerous to run a tire that is underinflated/overinflated or OVERLOADED.
To answer the tire pressure question there is some basic information needed.
First, it is important to know what the maximum weight that your chassis is designed to carry. All vehicles manufactured are required to have this information readily available on the vehicle.
This max weight figure will dictate what is the proper tire for the RV. Tires are designed to carry a specific range of loads. Once you have the correct tire for the designed load of the RV, to carry those loads safely the manufacturers publish weight tables with the correct pressure for each load range.
Sample of manufacturer tire pressure tables:
Firestone https://commercial.firestone.com/con...08-07-2018.pdf
Goodyear https://www.goodyearrvtires.com/pdfs/rv_inflation.pdf
Michelin https://www.michelintruck.com/refere...tion-tables/#/
Maxxis trailer tires: https://www.maxxis.com/trailer/trail...nflation-chart
Note: Dual wheels have separate load rating scale with a reduced load carrying ability. Also, on a TT factor in the tongue weight. Tongue weight is carried by your vehicle not the TT tires. A proper truck scale will show each axle set weight.
How do I weigh my RV?
It makes sense to weigh your rig as you will travel: full fuel, typical water load, propane load, people, food, pets, belongings, etc.
Since we typically will drive on or near a highway during a trip a simple place to get the RV weighted is at a Truck Stop with a scale. Get fuel, food, then stop by the scale.
It is inexpensive to weight your RV. Some common sense here is to try to use a scale that is not busy. If there is a line of trucks waiting to scale, ask the attendant when a better time would be to use the scale or just weigh at the next fuel stop. A little courtesy will go a long way in the truck lanes.
Where are the truck scales? https://catscale.com/cat-scale-locator/
How does it work? https://weighmytruck.com/how-to-use/driver-faq/
Is there an APP for that? https://weighmytruck.com/how-to-use/getting-started/
Hopefully you find this information useful.
Resource material:
Video:
Guide to terminology: https://www.your-rv-lifestyle.com/vehicle-weight.html
Continental Guide: http://www.engage360training.com/com...nanceGuide.pdf
Michelin Guide https://www.michelinb2b.com/wps/b2bc...s_Brochure.pdf
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Old 08-18-2018, 09:41 AM   #2
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Good info! Thanks for taking time to share that with us!
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Old 08-19-2018, 04:38 AM   #3
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http://http://www.rvtiresafety.net/2...on-tables.html
Here a link to a page on RV tire savety, in wich Roger Marble, known on fora as Tireman9,collected links to more tirebrands that give pressure/loadcapacity lists.

I as " pigheaded Dutch selfdeclared tirepressure-specialist" also made P/LC lists, ordened in loadindex and loadrange, and have put them in a map on my public map of onedrive, that belongs to my hotmail.com adress with username jadatis.
In that I use my determined extra safe formula, wich comes to higher pressure advice even then the European official formula.
http://https://onedrive.live.com/?id...26E0EEE092E6DC
Will try out if this link works, if not will make another.
Edit: cant manage to make both links working with mobile phone, will try again on laptop in time.
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Old 08-19-2018, 07:59 AM   #4
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Will add as atachment the collection per tire , as most Americans are used to.
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