[MENTION=398641]PastorB[/MENTION]obninth...
Funny thing is my first thought was to pirate the wheels from a BMX that I found at the dump last year...
and install them on The Green Machine, however...
The Green Machine's claim to fame is its ability to skid and fish tail when being ridden. The wide hard plastic wheels positively increase the skid and fish tail tendencies. So, gotta find a wheel, or, perhaps...
Screw/glue a piece of conveyor belt to each and hope for the best. Either that or get back to restoring my Marinoni "Special"...
Probably going to go with the Green Thing, since my youngest grandson is involved now.