FYI....that's a DS not a DSR.
That's right - my bad ;-)
Will be using this strictly as a commuter bike; good thing my commute is less than 40 miles round trip else I might get range anxiety given how fast I plan to ride this.
I have a 100 mile round trip once/week - and I ride fast. My '15 SR is capable of a sustained top speed of 80 MPH (specs say 85, but the flashing red temperature light comes on before then).
At those speeds (around 80 MPH) I burn through about 70% of my 15 kWh battery pack each way (luckily I can charge back up at my destination).
Now that the Zeros are capable of a higher sustained top speed you won't have the 80 MPH barrier, but you will burn through the kWh's more quickly (depending on how fast you ride).
Did you opt for the PowerTank? Congrats on the new toy.
BTW - your Beemer is rated at 92 ft-lbs of torque @6500 RPM vs. 116 @ 0 RPM for the Zero SR. I'm not surprised that you were impressed :-)