Schwalbe say 145 psi so there can be no argument with that.i use these
https://www.biketiresdirect.com/product/schwalbe-durano-s-road-tire
145 PSI - it's absolutely great if one can dodge potholes
I've no experience of a roadie ebike, no doubt it's a different style of riding.
Can't help thinking it must be very harsh, but if you want speed it will be the way to go.