Pirelli has launched the first standard production tire for the global market made with over 70% bio-based and recycled materials, ...

I bet you've seen some of that videos with tubeless/airless tyre demonstration. How about to build one with your hands? Cheap and simple, using only pvc pipes, bolts, and nuts to fit all together.

I bet you've seen some of that videos with tubeless/airless tyre demonstration. How about to build one with your hands? Cheap and simple, Using only pvc pipes, bolts, nuts, and to fit all together.