Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2068532.

On carpets with higher pile the stock wheels and also the other tires I designed have not enough grip and causing wheelspin so. So I designed a special profile for this carpet which will have much more grip there than the other profiles. A test was successful. On hard floor these tires will produce a bit more noise than the stock wheels.

Edit 2020/12/19: Inspired by the remix by jlcornwell which needs support to can be printed I simply scaled my model down to 50% in height and print it twice. Mounted both parts shifted by a half tooth on the wheel the robot runs more smoothly on hard floors now. See last photo.