Tire Inflation Questions
(I did a search about "tires" on this forum and there were 270 pages that came up so I thought it best to just ask my question directly) I just read a post on this forum from someone who had a roug...
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CALandLIN wrote:GizmosMom wrote:
Thanks, everyone. Very informative answers.
I made a mistake...we have air bags, not shocks.
Will get the rig weighed at the beginning of our next trip and go from there.
I have always loved this forum and the people who help me/us!
I only write about tire inflation pressures from the way they are supposed to be inflated and in accordance with tire industry standards.
Bypassing normal automotive tire industry standards and inflating your tires to the load carried is a procedure supported by FMCSA. Those are commercial standards and are not applicable with FMVSS which gives us all the recommended cold inflation pressures found in the vehicle owner’s manual, vehicle manufacturers -final stage - certification label and on the vehicle load and tire placard.
The recommended cold inflation pressures provide by your vehicle’s manufacturer are considered the minimum safe operating pressures for your vehicle. WRONG!
The U.S. Tire Manufacturing Association (USTMA) will not recommend inflating your tires below the recommended cold inflation pressures displayed on your vehicle’s certification label. NOT A GOOD RECCOMENDATION!
You can find all you need to know about proper tire inflation for your RV starting on page 42 of the reference in the “Click Here!“ tab below.
Click Here!
That's great and it's a good beginners document to understanding "tires", however they are still virtually wrong on p10-11 on inflation pressures and pretty much contradict themselves between 2 paragraphs.
Now I know where the "must fill your tires up to the sticker on the door psi" folks get it from. That book says to. It also says to maintain proper pressure in your tires for max performance, tire life, etc.
This may be good info for a little car tire with max 32psi or whatever rating, but it is NOT a 1 size fits all is correct recommendation. Period. Grossly over inflated ties ( for the load, even if within max sidewall psi) can be almost as dangerous as under inflated tires in some (maybe different) situations.
This is not debatable, it's physics, dynamics and mechanics of materials.
