My printer isn´t ideal for printing flexible materials like NinjaFlex and from what i´ve seen others comment they offer very little to no grip at all anyway. Others seem to use tires for the F104 as a better alternative to printed tires but is there a recommended source for those tires?
There´s a link to F104 tires on Amazon on the Electronics page up in the dropdown menu (link below aswell) but you can search any R/C website for "F104 Tires" or even ask in your local hobby shop.
As far as rims goes just search "F104 Rims" on Thingiverse and you´ll find them. Good luck.
F1 Electronics and HW: <a href="http://danielnoree.com/openrc-electronics/" rel="nofollow">http://danielnoree.com/openrc-electronics/</a>
Video about the OpenRC F1 car using F104 tires: <a href="https://youtu.be/vTzdZs1aIgg" rel="nofollow">https://youtu.be/vTzdZs1aIgg</a>