This really bothers me, but I won't be a customer because of it. Someone thinks it's cost effective to just print the same 3D file at two scales rather than rescale the file for two different sizes. Now they still have to make the rims in two different sizes that will scale to different size rims. Maybe this is correct for big/littles ... one industry standard rim and one magically scalled up to a non standard rim fitting no known tire size. Good luck finding tires for these.