It is amazing how well these wheels work. I can't believe they were not standard from the factory, it is a 100% improvement if you have the smallest incline anywhere on your property. I had to rescue my mower 1-2x times a day because it kept facing downwards and would get stuck on hills, but now it turns on a dime.

After seeing the remix by Antalpromille from JBear's design, I wanted to make my tiny robot look like it is driving a hundred miles per hour so I added a little twist to the wheels, and while I was at it I changed the hub so no supports are needed.

I did have to Dremel the hub to remove the "elephant foot" before it would fit the nut, but that is expected and could be fixed in slicer settings.

It works so well that I think I'm going to make another remix with replaceable treads so that when these spikes wear down I can replace the outer ring without re-printing the hub.