Communications was another problem area for the T-34. Only the tank platoon sergeant had a radio to communicate to company and battalion levels. This meant the tank platoon movements were done with hand signals. Both American and German tanks had good radios.
A major problem with the Tigers was that its transmission was overburdened and prone to failure because of its massive weight.
Another problem was that if the Tiger driver ‘rotated’ the tank in place (one track forward, other track reversed) it would often bust a track. Not a fun thing to deal with in the midst of combat.