I wonder if they could get enough Kumhos to support production.
I believe the high lift axle option is required for the 15" wheels.
A most interesting observation, Herb.
I almost did this backwards when I bought my Casita.
From input gleaned by the worlds most experienced off-roaders and racing teams (my baja cousins) we arrived at the conclusion (read [b]they told me) that that if I was going to buy a rugged single axle
trailer that I could use to transport myself to the outback that I needed a 30" tire at 15psi inflation to manage the one-way 100 miles of sharp rock and washboard.
All this by the way to get to the archeological sites that I needed to cover which almost destroyed an Aliner I had bought.
Before I bought my Casita I did all the design work and found that a 30" dia tire on a 15" rim would clear the high-lift axle version.
So armed with the best of the best information, and having the utter stupidity to post my plans online, I got hammered on the Castia Club (by guess who) that I need not change to a 15" rim.. I should just buy 14" kuhmos (am I spelling this right? because I don't care where you put the "h" my spell checker aint gonna care).
As for Casita coming around to a 15" option please read my casita website
which more than two years ago had all the poop necessary for them (Casita) to do the right thing.
I never knew it before but the subject of "tires" lights
up a truly bombastic pulpit, pitting the good angel against the bad angel... it is a war of everlasting blowouts.
I'm just happy Casita finally came around... a vindication of sorts.