Just wanted to make bigger tires for my hoverboard so I quickly desing the model in Solidworks and started printing. Yellow wheel is made from PLA and the green one is PETG. I wanted to have some flexing but it is fairly rigid. I have 95 kg and the wheels are not flexing at all while riding. It would be interesting to print this in flexible material but it would take a long, long time. Maybe someone has enought patience :P.