If it might help, an Iron Butt rider friend who would go thru 10+ tires a year
made his own; simple, cheap.
A 30 gallon barrel w/one end cut out and covered with heavy heater hose.
Then a pipe installed thru the drum about a foot from the top to provide
an anchor point to hold the wheel in place. The drum was full of rocks
to keep it stable. A decent bead-breaker and a few good tire irons and
you are in business.