I sold that motorized bicycle with the bicycle tires, for a huge loss, to build my own bike frame. A frame that will house those 18" x 4" motorcycle tires with room to spare. It will not matter what I run over any more. I can run those tires at 20 PSI and I won't feel anything in the road......at any speed.Yeah that does sound very dangerous, I don't ride my bikes at night since my cert restricts riding to the daytime, and it is really hard to see potholes and other road hazards at night. It gets 30 degrees colder at night here too and I don't really want to ride freezing my butt off, lol. I'm sure if I started riding my bikes at night around my neighborhood, there would be a lynch mob with torches and pitchforks and sheriffs with taser guns chasing after me!
I sat on one of those tires and hopped up and down on it, with no tube or rim on it and it did not collapse. It doesnt get any better than that. LMAO