Proline Racing (PLR), not to be confused with Pro-Line Racing (an RC car parts supplier), builds some of the most renowned drag racing powerplants on the market today. If you watch something like ...

[Michael Rectin] is in on the action, and he’s been exploring how to 3D print a decent set of tires to help his RC car reach higher speeds mph. His first efforts involved experiments with TPU.

The video points out that, at best, even a decent RC car will have pretty crappy aerodynamic parts from the factory, with a lift-to-drag (L/D)ratio of 2-3:1 at best. This means that, while they ...