I know there is TPU wheel design in the market but i want to look at this issue in different perspective.
Most people doesn't use TPU filament because TPU are need direct drive extruder for succesfull print.
I will test it on New Ranger Mini.
Other advantage is it self suspension in the wheel. 55mm outer diameter. You can print with normal PLA to only 2 grams!
You will need 45x5 mm o-ring.
3D PRINTING SETTINGS
0,2 max layer height
15% minimum infill
PLA / ABS / PETG
I didn't try with TPU yet.