I printed Dragon R1 and really enjoyed. When it came down to the tires, I really didn't wanted to use TPU, as it's not so easy to print and anyway grip is not good.

So I designed some tires in PLA and then you can just cut a Bike tube and slide it on the outside, the grip will be better, and printing will be easier. The tires are held in place with a notch on wheel and tire, just slide in and drive!

I also wanted to design some better looking wheels, so I designed these, inspired by JDM wheels.

The wheel+tire combo dimensions is the same of the original, so you don't run into problems when fitting.

The rim is universal (you cna use the same for front and rear), just the tire dimensions is different front to back. This one also allows you to print it in 2 colours, giving it a nicer look.

Solidworks model is included for easier remix.