I really liked the wheel CAD Solutions Neumayr made since it looks nice, does not damage the original tires with screws, is functional in that it should have better traction due to the airless tire design and uses the original wheel weights, but I wanted to try out the traditional spiky wheel pattern that has been gotten a lot of praise. Since Neumayr's great design allows for easy tire swaps, I created made a spiky version of his tire!
Thanks Neumayr for including step files and making this much easier!
Edit: A user asked me for a version that's 15mm smaller in diameter that fits on the same hub, so I've included it as well. Original is 226mm diameter, and the smaller one is 212mm in diameter. Measure to get the one that fits your landroid!
The author remixed this model.
This version has tires with a spiky tread pattern that uses the original wheels by Neumayr.