4-Wheel long-range mobility scooters Scooter If you're looking for a scooter that can go further in a single charge, and also cope with a variety of terrains look into a four-wheel model. They offer greater stability and higher incline ratings than 3-wheel models. However, they do have more of a turn radius, and could have slightly slower top speeds. Browse our selection of 4 wheel full-size High-Capacity Mobility Scooters scooters made by top manufacturers. Compare features like legroom, weight capacity, and turning radius to find the perfect model for you. Stability A 4-wheeled mobility scooter for disabled scooter is more stable than a three-wheeled scooter and therefore better suited to outdoor use or uneven surfaces. This model is more stable and secure because it has a larger frame and a higher base. This can be particularly beneficial for those who may have balance issues or other health issues which affect their stability. The larger wheels will also take in bumps and vibrations better which reduces the strain on your body.