3 Wheel Mobility Scooter

What is the difference between 3 wheel mobility scooter to 4 wheel mobility scooter??

The 3 wheel mobility scooter are typically the lightest, most compact and most maneuverable, and they have good stability on even surfaces. Because of their tight turning radius they are perfect for getting around in crowds or negotiating store aisles and turns. The 4 wheel mobility scooter are generally heavier and less compact, but more comfortable and stable on uneven terrain. Be sure to weigh the easy of portability and assembly against your desired level of comfort, stability and battery range when choosing your travel mobility scooter.