Wheels with tires for balloon powered car

Original tires broke up quickly, so I designed these.

Wheels and tires are separate bodies so can be printed of different color or material. And there's actually air space between them. No valve though. :-)

If tires are hard, it will be impossible to remove or install them. They have to be printed at the same time, or you have to cut the inside rim. TPU tires should be easy to install, but I haven't tried.

I printed them of PET-G, black and white, no supports were required. 100% infill.