I'm 150 and my e-bike is 50lbs. There are lots of 200 lbs road cyclists out there. My rear tire which is on the motor wheel is a 700x32c at 80 psi. That should be plenty of tire pressure for the rear. The front wheel is 700x25c which should be good too. I estimate that e-bike's weight distribution (without rider) is 15 lbs in the front and 35 lbs in the back.