These are not heavy duty tiers, obviously.
Underinflating caused flats and overinflating caused tube creeping
from under a bead.

There were some products on the market that are ijected in the tube
and form a rigid foam, if I remember correctly. But, of course, it
defeats the purpose.

There was a brand of inline skates (K2 "Coyote") that used 150mm
inflatable wheel that might be compatable w/V2 and have better quality
tire.