I just wanted to show you my new rover. It has gone through a few iterations already (friction drive with different motors, different chassis, Navio2)
It has two T-Motor MN3110 780kV on 2s with a reduction of 1:12.
The ESCs are 30A blheli. I tested all kinds of settings to make them work best with the rover. They are now configured for closed loop (governor) operation and it is really a big difference to the normal mode.
I changed the FC from my Navio2 to a Pixhawk, because I want to add wheel encoders and there is no way to connect them to the Navio at the moment.