True
But I could say the same about glue jobs from the manufactures. Oh and friends that glue tires and lets not forget the pro's that have tires come unglued.
Glue keeps the tires on the wheels becuse of the centrificle forces are so high. Tire companys have contantly worked on to keep tires from balooning. Plastics have come a long way, I think it's posible now to explore this idea.
Nothing is perfect, arms break, motors flame out, etc.