Three-wheel mobility scooters use a tighter turning radius for maneuverability
https://yenkee-wiki.win/index.php/An_In-Depth_Look_Into_The_Future:_What_Will_The_Mobility_Scooters_Industry_Look_Like_In_10_Years%3F
Three-wheel mobility scooters provide a tighter turning radius for maneuverability, while four-wheel designs offer added stability on diverse surface.