Here's the next silly thing. I want a 9" soft/firm white donut wheel in the DuneBuggy. They don't make them new, and the 8" used ones are crazy money, so... I took my 9" black foam one, cleaned it with acetone to really open up the pores, and thined out some resin so it really soaks into the foam. First coat hardens but stays flexible because it's "in the foam" sand lightly, put on a second coat of thined resin, wet sand smooth and paint with Vinyl paint so it won't crack. Still says flexible like hard rubber. It works, this will be the second wheel I've done this way.