9x3.50-4 Pneumatic Mobility Tire with C203 Grande Knobby Tread Inner Tube:Without Tube it uses the benefits of

it uses the benefits of Dynamic's newest technology platform for a better drive experience and state-of-the-art programming

with a Polyarmor coating that is virtually indestructible

allowing you to coast

or it may be locked into a fixed position

9x3.50-4 Pneumatic Mobility Tire with C203 Grande Knobby Tread Inner Tube:Without Tube it uses the benefits ofThe Primo gray 9x3. 50 4" pneumatic power wheelchair or scooter tire with the C203 Grande Knobby tread has a PSI rating of 50. It fits many mobility models and is typically used as the rear tire for mobility scooters or the drive tire for power chairs. This fine Primo tire features non marking gray rubber. Because many of our mobility customers prefer using pneumatic tires as they offer a smoother ride than solid or foam filled tires, we offer this