T-34/85 (and other Russian tanks): What center guide lugnuts, Comrade?
https://www.youtube.com/watch?v=BRtj_TSOHjw
None at all. However, the ends of the pin that connects the track shoes wears down and rub off, and can separate a track in as little as a hundred miles in stony or rocky country. BTW: Comrade/tovarisch went out of style with the end of the Soviet Union. It's mostly [citizen] now.