I have been a pilot since 1966 if you think tires held on by 1/8 inch aircraft cable is to small or will rust
you should see what size the control cables are on the airplanes I fly or use to fly.
that I would not want to be hit by a tire flying through the air from a car or truck you are right about that.
we were in Houston TX headed toward Galveston we were riding with my uncle
when on the access road I noticed a 4 wheeled flat bed trailer running down the road with no tow in sight
it hit the retaining fence and lifted all 4 wheels off the ground had it veered onto the four lane well, that could have been a catastrophe