I haven't had a scooter yet, but a while back I looked at the numbers. 150cc scooter has bigger tires and brakes, bigger frame. I didn't find a 50cc scooter I liked. Its not too hard to find a gasoline scooter with a fried motor dirt cheap. Get a 150cc with dual disc brake (not drum on back) and largest diameter TUBELESS tires you can find. There are hub-motors and non-hubs that will work very well for this since a small scooter should not go over 45-MPH...