Rotate forward and back a few minutes to wear in the gear teeth to free up, add a rubber band as a tire and enjoy!

Diameter: 100mm/4inch
thickness: 12mm/0.5inch
Material weight at 15% infill: 52.57 g/1.85oz

I printed mine with PLA 15% infill 2 layer walls

There are small parts so bed adhesion is critical you might have to print on a raft