Dennis, thanks for providing this.  It clarifies a lot.  However, I notice
that the OE tire sizes for our campers are not included in the tables.  I
suppose, like has been observed many times on this list, that the tire size
being considered by most manufacturers as "obsolete" is the reason.  But
our vehicles are real, and we drive them.  Are you aware of a source that
provides similar data for our OE tire sizes?  The nearest size in the
attached document is LT185/75R14, but of course, the aspect ratio is too
low, and the tire diameter would be too small.  The OE tire size of
LT185R14 has an aspect ratio of approximately 82 as I understand it.  The
alternate size of LT195R14 of course has the same aspect ratio, and is only
very slightly larger in diameter.

The document does reinforce my notion that one should just stick with OE
specifications up until that becomes literally impossible.  For now, there
are still tires available that fit that bill, though not very many choices.

On Mon, Oct 30, 2017 at 6:18 PM, Dennis Haynes <d23haynes57@hotmail.com>
wrote:

> For all the recent questions I once again would like to point out this
> reference guide.
>
> http://www.tiresafety.com/images/Tire%20Replacement%20Manual.pdf
>
> While is now 11 years old, this is probably the best tire reference manual
> with the most important information in one place, in a format that is easy
> to understand.
> Of most benefit is the load-inflation tables for most every size tire we
> would consider. There is some good reading in here. I will be referenicing
> this manual occasionally in some of my responses to posted questions.
>
> Dennis
>