What Happens If Roller Skate Wheels Were Giant Size?

I saw an old video online of cycle skates and wanted to adapt them to make my own. I design and prototype them to go off road, and then go crazy by adding a chainsaw motor! I bought a wheelchair to make it.

Like the boots you see in the video? Watch this:
https://www.youtube.com/watch?v=ajtxUDeJvyk

Fireball Shims
https://fireballtool.com/magnetic-shim-kit-28pc/

Fireball Squares
https://fireballtool.com/squares/