It is a prototype of an airless tire for a unified wheel design. This project is quite simple and interesting for modeling.
One day I came across a picture with an airless tire...And decided to do this project at my university.
Here you can see sketches of tire tread and internal structure.
As a result, there is such a tire.
Step 1: Find an airless tire image
Step 2: Calculate the internal structure of your tire. The main thing is tire pressure.
Step 3: Start designing a tire tread. I recommend to use a loft
Tire pressure
Loft modelling