Originally Posted by Sky
With no disrespect Cracker, I believe Howie is simply stating that tire engineers know more about their tires then Airstream engineers do.
Thanks Sky - and no disrespect taken - but I would still contend that Airstream, especially with respect to the newer trailers, is far more capable of properly sizing their tires and determining correct pressure than any of us could hope to be. That said, in the absense of up to date data for many of the antique (---or older trailers,) and based on the emergence of new tire technology since many of the older trailers were built, the tire charts, the determination of axle rating, and weighing the trailer, is definitely the way to go. Nothing I said would suggest otherwise. One caveat I did want to repeat, with respect to Goodyear Marathons, is that Goodyear does not recommend any pressure below 45 psi - even though their charts will show capacities all the way down to 15 psi in the case of ST Metric Tires. I'm not sure where that little tidbit resides - but I have definitely read it.