I always rent a 3 wheel scooter-they're so much easier to maneuver and have a smaller turning radius. Also, when I was looking to buy a scooter, I asked the salesperson if it was true that a 4 wheel has greater stability than a 4 wheel, thus making it a better purchase. Note, the 4 wheel scooter cost more money, and assuming the sales person worked on commission, would net them more money. Yet, they told me that while that used to be true, in the last few years, technology has improved on the stability of the 3 wheel, making it just as stable as the 4 wheel. So I was encouraged to buy the less expensive, 3 wheel scooter. Good to know!