Regardless of wheel size, the max speed setting is for top speed of motor control... which means the electric motor would cut out at setting speed of 43.7 mph.
I've gone over 60 mph on my road bike (without disc brakes), ride my motorcycles at triple digit speed regularly, 43.7 mph is no much of a concern to me.
Parachute is definatly not needed at 43.7 mph..
I prefer not to add overall width to my bikes, I have no problem carrying weight in the passenger area. Besides, carrying volume will be reduced when you split up to carrying items on the sides.
At the speed of travel for this cargo ebike, CoG for stability is not a priority nor concern.
My priority is to be narrow, travel between car mirrors among NYC traffic.
Going by my feel, the cargo ebike weighs around 75-85 lb. with two batteries. I don't have a scale at the school, can't get a accurate measure.
Here's the link to the manufacturer where I purchased the bike:
https://geobyke.en.alibaba.com/produ...20dc5f40IzqIBK