Thanks. Yes, the tires are probably reversed- that's how they run them on the ampbibs so they swim, but Tricubs don't have to swim!
According to original brochures and parts diagrams, the Tricubs were shipped from factory with tires installed as shown in your photo. Supposedly this configuartion is better for less firm base... snow, mud, gravel, loose dirt, sand, etc.
Oddly however, all Tricarts were shipped with tires installed the other way.