Alternative wheels for the great prussian tank wagon from ccs66 ( see https://www.thingiverse.com/thing:3409151) as well as other cars. The wheels are Maerklin standard 30mm size.
These wheels are also easier and quicker to print than the wheels included with the prussian car due to the shorter axle tubes.
The wheels need additional 3mm diameter steel rods, of ~61mm length.
I used a vertical drill with a 3mm drillbit to clear out the hole for the axle.
Esun & Hobbyking PLA & PLA-X
Black and mid grey
The black shiny one on the left is regular PLA from Esun, the others are PLA-X from Hobbyking. The latter gives a very nice glossy finish and is supposed to be thougher than regular PLA.