A simple design. I usually print the tires in TPU. The thinner and lighter you can print them the squishier they are. The photo is Creality Clear TPU with some blue PLA for the wheels. The wheels and tires have a corresponding ‘bead’ to hold the tire in place.
Sometimes I print the tires without top and bottom layers to show off the infill. I hope you get some use from them.
The author marked this model as their own original creation.