9 x 3.50 - 4 Foam Filled Tire with Knobby Tread
9 x 3.50 - 4 Foam-Filled Tire with Knobby Tread 9 x 3.50 - 4 gray foam-filled (flat free) mobility tire. Fits many mobility scooters and power chairs, and never goes flat! Typically used as the rear tire for mobility scooters. Non-marking gray rubber. Use as a replacement for your original equipment solid tire or replace your old pneumatic tire! Pneumatic air-filled tires can typically be replaced with foam-filled flat-free tires of the same size very easily Tire is ready to install.